19-1298; Rev 11; 10/07 15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V, Up to 1Mbps, True RS-232 Transceivers Applications Battery-Powered Equipment Cell Phones Cell-Phone Data Cables Notebook, Subnotebook, and Palmtop Computers Printers Smart Phones xDSL Modems Next-Generation Device Features For Space-Constrained Applications MAX3228E/MAX3229E: 15kV ESD-Protected, +2.5V to +5.5V, RS-232 Transceivers in UCSP For Low-Voltage or Data Cable Applications MAX3380E/MAX3381E: +2.35V to +5.5V, 1A, 2Tx/2Rx, RS-232 Transceivers with 15kV ESD-Protected I/O and Logic Pins _______________Ordering Information PART PINTEMP RANGE PACKAGE PKG CODE MAX3222ECTP 0C to +70C MAX3222ECUP 0C to +70C 20 Thin QFNEP** (5mm x 5mm) 20 TSSOP MAX3222ECAP 0C to +70C 20 SSOP MAX3222ECWN 0C to +70C 18 Wide SO -- MAX3222ECPN 0C to +70C 18 Plastic DIP -- MAX3222EC/D 0C to +70C Dice* -- 20 Thin QFNEP** (5mm x 5mm) T2055-5 MAX3222EETP -40C to +85C T2055-5 -- -- MAX3222EEUP -40C to +85C 20 TSSOP -- MAX3222EEAP -40C to +85C 20 SSOP -- MAX3222EEWN -40C to +85C 18 Wide SO -- MAX3222EEPN -40C to +85C 18 Plastic DIP -- MAX3232ECAE 0C to +70C 16 SSOP -- MAX3232ECWE 0C to +70C 16 Wide SO -- MAX3232ECPE 0C to +70C 16 Plastic DIP -- *Dice are tested at TA = +25C, DC parameters only. **EP = Exposed paddle. Ordering Information continued at end of data sheet. Pin Configurations, Selector Guide, and Typical Operating Circuits appear at end of data sheet. MegaBaud and UCSP are trademarks of Maxim Integrated Products, Inc. Covered by U.S. Patent numbers 4,636,930; 4,679,134; 4,777,577; 4,797,899; 4,809,152; 4,897,774; 4,999,761; and other patents pending. ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim's website at www.maxim-ic.com. 1 MAX3222E/MAX3232E/MAX3237E/MAX3241E /MAX3246E General Description The MAX3222E/MAX3232E/MAX3237E/MAX3241E/ MAX3246E +3.0V-powered EIA/TIA-232 and V.28/V.24 communications interface devices feature low power consumption, high data-rate capabilities, and enhanced electrostatic-discharge (ESD) protection. The enhanced ESD structure protects all transmitter outputs and receiver inputs to 15kV using IEC 1000-4-2 Air-Gap Discharge, 8kV using IEC 1000-4-2 Contact Discharge (9kV for MAX3246E), and 15kV using the Human Body Model. The logic and receiver I/O pins of the MAX3237E are protected to the above standards, while the transmitter output pins are protected to 15kV using the Human Body Model. A proprietary low-dropout transmitter output stage delivers true RS-232 performance from a +3.0V to +5.5V power supply, using an internal dual charge pump. The charge pump requires only four small 0.1F capacitors for operation from a +3.3V supply. Each device guarantees operation at data rates of 250kbps while maintaining RS-232 output levels. The MAX3237E guarantees operation at 250kbps in the normal operating mode and 1Mbps in the MegaBaudTM operating mode, while maintaining RS-232compliant output levels. The MAX3222E/MAX3232E have two receivers and two transmitters. The MAX3222E features a 1A shutdown mode that reduces power consumption in battery-powered portable systems. The MAX3222E receivers remain active in shutdown mode, allowing monitoring of external devices while consuming only 1A of supply current. The MAX3222E and MAX3232E are pin, package, and functionally compatible with the industry-standard MAX242 and MAX232, respectively. The MAX3241E/MAX3246E are complete serial ports (three drivers/five receivers) designed for notebook and subnotebook computers. The MAX3237E (five drivers/ three receivers) is ideal for peripheral applications that require fast data transfer. These devices feature a shutdown mode in which all receivers remain active, while consuming only 1A (MAX3241E/MAX3246E) or 10nA (MAX3237E). The MAX3222E, MAX3232E, and MAX3241E are available in space-saving SO, SSOP, TQFN and TSSOP packages. The MAX3237E is offered in an SSOP package. The MAX3246E is offered in the ultra-small 6 x 6 UCSPTM package. MAX3222E/MAX3232E/MAX3237E/MAX3241E /MAX3246E 15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V, Up to 1Mbps, True RS-232 Transceivers ABSOLUTE MAXIMUM RATINGS VCC to GND ..............................................................-0.3V to +6V 18-Pin PDIP (derate 11.11mW/C above +70C)..........889mW V+ to GND (Note 1) ..................................................-0.3V to +7V 20-Pin TQFN (derate 21.3mW/C above +70C) ........1702mW V- to GND (Note 1) ...................................................+0.3V to -7V 20-Pin TSSOP (derate 10.9mW/C above +70C) ........879mW V+ + |V-| (Note 1).................................................................+13V 20-Pin SSOP (derate 8.00mW/C above +70C) ..........640mW Input Voltages 28-Pin SSOP (derate 9.52mW/C above +70C) ..........762mW T_IN, EN, SHDN, MBAUD to GND ........................-0.3V to +6V 28-Pin Wide SO (derate 12.50mW/C above +70C) .............1W R_IN to GND .....................................................................25V 28-Pin TSSOP (derate 12.8mW/C above +70C) ......1026mW Output Voltages 32-Lead Thin QFN (derate 33.3mW/C above +70C)..2666mW T_OUT to GND...............................................................13.2V 6 x 6 UCSP (derate 12.6mW/C above +70C) .............1010mW R_OUT, R_OUTB (MAX3241E)................-0.3V to (VCC + 0.3V) Operating Temperature Ranges Short-Circuit Duration, T_OUT to GND.......................Continuous MAX32_ _EC_ _ ...................................................0C to +70C Continuous Power Dissipation (TA = +70C) MAX32_ _EE_ _.................................................-40C to +85C 16-Pin SSOP (derate 7.14mW/C above +70C) ..........571mW Storage Temperature Range .............................-65C to +150C 16-Pin TSSOP (derate 9.4mW/C above +70C) .......754.7mW Lead Temperature (soldering, 10s) .................................+300C 16-Pin TQFN (derate 20.8mW/C above +70C) .....1666.7mW Bump Reflow Temperature (Note 2) 16-Pin Wide SO (derate 9.52mW/C above +70C) .....762mW Infrared, 15s..................................................................+200C 18-Pin Wide SO (derate 9.52mW/C above +70C) .....762mW Vapor Phase, 20s..........................................................+215C Note 1: V+ and V- can have maximum magnitudes of 7V, but their absolute difference cannot exceed 13V. Note 2: This device is constructed using a unique set of packaging techniques that impose a limit on the thermal profile the device can be exposed to during board-level solder attach and rework. This limit permits only the use of the solder profiles recommended in the industry-standard specification, JEDEC 020A, paragraph 7.6, Table 3 for IR/VPR and convection reflow. Preheating is required. Hand or wave soldering is not allowed. Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICS (VCC = +3V to +5.5V, C1-C4 = 0.1F, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25C.) (Notes 3, 4) PARAMETER CONDITIONS MIN TYP MAX MAX3222E, MAX3232E, MAX3241E, MAX3246E 0.3 1 MAX3237E 0.5 2.0 UNITS DC CHARACTERISTICS (VCC = +3.3V or +5V, TA = +25C) Supply Current Shutdown Supply Current SHDN = VCC, no load mA SHDN = GND 1 10 A SHDN = R_IN = GND, T_IN = GND or VCC (MAX3237E) 10 300 nA 0.8 V LOGIC INPUTS Input Logic Low T_IN, EN, SHDN, MBAUD Input Logic High T_IN, EN, SHDN, MBAUD VCC = +3.3V 2.0 VCC = +5.0V 2.4 V Transmitter Input Hysteresis Input Leakage Current 0.5 T_IN, EN, SHDN MAX3222E, MAX3232E, MAX3241E, MAX3246E T_IN, SHDN, MBAUD MAX3237E (Note 5) V 0.01 1 9 18 0.05 10 A 0.4 V A RECEIVER OUTPUTS Output Leakage Current R_OUT (MAX3222E/MAX3237E/MAX3241E/ MAX3246E), EN = VCC, receivers disabled Output-Voltage Low IOUT = 1.6mA (MAX3222E/MAX3232E/MAX3241E/ MAX3246E), IOUT = 1.0mA (MAX3237E) 2 _______________________________________________________________________________________ 15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V, Up to 1Mbps, True RS-232 Transceivers (VCC = +3V to +5.5V, C1-C4 = 0.1F, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25C.) (Notes 3, 4) PARAMETER Output-Voltage High CONDITIONS IOUT = -1.0mA MIN TYP VCC 0.6 VCC 0.1 MAX UNITS V RECEIVER INPUTS Input Voltage Range -25 Input Threshold Low TA = +25C Input Threshold High TA = +25C +25 VCC = +3.3V 0.6 1.1 VCC = +5.0V 0.8 1.5 V VCC = +3.3V 1.5 2.4 VCC = +5.0V 2.0 2.4 Input Hysteresis 0.5 Input Resistance TA = +25C 3 5 5 5.4 300 50k V V V 7 k TRANSMITTER OUTPUTS Output Voltage Swing Output Resistance All transmitter outputs loaded with 3k to ground (Note 6) VCC = 0, transmitter output = 2V Output Short-Circuit Current Output Leakage Current VCC = 0 or +3.0V to +5.5V, VOUT = 12V, transmitters disabled (MAX3222E/MAX3232E/MAX3241E/MAX3246E) MOUSE DRIVABILITY (MAX3241E) T1IN = T2IN = GND, T3IN = VCC, T3OUT loaded with Transmitter Output Voltage 3k to GND, T1OUT and T2OUT loaded with 2.5mA each ESD PROTECTION R_IN, T_OUT T_IN, R_IN, R_OUT, EN, SHDN, MBAUD 5 60 mA 25 A V Human Body Model 15 IEC 1000-4-2 Air-Gap Discharge (except MAX3237E) 15 IEC 1000-4-2 Contact Discharge (except MAX3237E) 8 IEC 1000-4-2 Contact Discharge (MAX3246E only) 9 MAX3237E V Human Body Model 15 IEC 1000-4-2 Air-Gap Discharge 15 IEC 1000-4-2 Contact Discharge 8 kV kV _______________________________________________________________________________________ 3 MAX3222E/MAX3232E/MAX3237E/MAX3241E /MAX3246E ELECTRICAL CHARACTERISTICS (continued) MAX3222E/MAX3232E/MAX3237E/MAX3241E /MAX3246E 15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V, Up to 1Mbps, True RS-232 Transceivers TIMING CHARACTERISTICS--MAX3222E/MAX3232E/MAX3241E/MAX3246E (VCC = +3V to +5.5V, C1-C4 = 0.1F, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25C.) (Notes 3, 4) PARAMETER SYMBOL Maximum Data Rate Receiver Propagation Delay CONDITIONS RL = 3k, CL = 1000pF, one transmitter switching tPHL tPLH MIN TA = TMIN to TMAX (MAX3222E/MAX3232E/ MAX3241E) (Note 6) 250 TA = +25C (MAX3246E) 250 TYP MAX kbps 0.15 Receiver input to receiver output, CL = 150pF UNITS s 0.15 Receiver Output Enable Time Normal operation (except MAX3232E) 200 ns Receiver Output Disable Time Normal operation (except MAX3232E) 200 ns (Note 7) 100 ns 50 ns Transmitter Skew |tPHL - tPLH| Receiver Skew |tPHL - tPLH| VCC = +3.3V, TA = +25C, RL = 3k to 7k, measured from +3.0V to -3.0V or -3.0V to +3.0V, one transmitter switching Transition-Region Slew Rate CL = 150pF to 1000pF 6 30 V/s TIMING CHARACTERISTICS--MAX3237E (VCC = +3V to +5.5V, C1-C4 = 0.1F, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25C.) (Note 3) PARAMETER Maximum Data Rate CONDITIONS MIN RL = 3k, CL = 1000pF, one transmitter switching, MBAUD = GND 250 VCC = +3.0V to +4.5V, RL = 3k, CL = 250pF, one transmitter switching, MBAUD = VCC 1000 VCC = +4.5V to +5.5V, RL = 3k, CL = 1000pF, one transmitter switching, MBAUD = VCC 1000 TYP MAX UNITS kbps tPHL 0.15 tPLH 0.15 Receiver Propagation Delay R_IN to R_OUT, CL = 150pF Receiver Output Enable Time Normal operation 2.6 s Receiver Output Disable Time Normal operation 2.4 s 100 ns 50 ns Transmitter Skew (Note 7) | tPHL - tPLH |, MBAUD = GND | tPHL - tPLH |, MBAUD = VCC Receiver Skew | tPHL - tPLH | Transition-Region Slew Rate VCC = +3.3V, RL = 3k to 7k, +3.0V to -3.0V or -3.0V to +3.0V, TA = +25C CL = 150pF to 1000pF s MBAUD = GND 6 30 MBAUD = VCC 24 150 V/s CL = 150pF to 2500pF, 4 30 MBAUD = GND Note 3: MAX3222E/MAX3232E/MAX3241E: C1-C4 = 0.1F tested at +3.3V 10%; C1 = 0.047F, C2, C3, C4 = 0.33F tested at +5.0V 10%. MAX3237E: C1-C4 = 0.1F tested at +3.3V 5%, C1-C4 = 0.22F tested at +3.3V 10%; C1 = 0.047F, C2, C3, C4 = 0.33F tested at +5.0V 10%. MAX3246E; C1-C4 = 0.22F tested at +3.3V 10%; C1 = 0.22F, C2, C3, C4 = 0.54F tested at 5.0V 10%. Note 4: MAX3246E devices are production tested at +25C. All limits are guaranteed by design over the operating temperature range. Note 5: The MAX3237E logic inputs have an active positive feedback resistor. The input current goes to zero when the inputs are at the supply rails. Note 6: MAX3241EEUI is specified at TA = +25C. Note 7: Transmitter skew is measured at the transmitter zero crosspoints. 4 _______________________________________________________________________________________ 15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V, Up to 1Mbps, True RS-232 Transceivers 10 +SLEW 8 6 3000 4000 MAX3237E toc03 20 20kbps 15 1000 2000 3000 4000 5000 0 1000 2000 3000 4000 LOAD CAPACITANCE (pF) LOAD CAPACITANCE (pF) LOAD CAPACITANCE (pF) MAX3241E TRANSMITTER OUTPUT VOLTAGE vs. LOAD CAPACITANCE MAX3241E SLEW RATE vs. LOAD CAPACITANCE MAX3241E OPERATING SUPPLY CURRENT vs. LOAD CAPACITANCE 10 8 6 4 2000 3000 4000 MAX3237E toc06 120kbps 30 20kbps 20 0 0 5000 250kbps 40 10 0 1000 1 TRANSMITTER AT 250kbps 2 TRANSMITTERS AT 15.6kbps 50 2 VOUT- 5000 60 SUPPLY CURRENT (mA) 12 SLEW RATE (V/s) 1 TRANSMITTER AT 250kbps 2 TRANSMITTERS AT 15.6kbps 0 -1 -2 -3 -4 -5 -6 14 MAX3237E toc05 VOUT+ 0 120kbps 25 0 0 5000 MAX3237E to04 5 4 3 2 1 250kbps 30 5 FOR DATA RATES UP TO 250kbps 2000 35 10 2 0 1000 T1 TRANSMITTING AT 250kbps T2 TRANSMITTING AT 15.6kbps 40 SUPPLY CURRENT (mA) SLEW RATE (V/s) VOUT- 6 1000 2000 3000 4000 5000 0 1000 2000 3000 4000 5000 LOAD CAPACITANCE (pF) MAX3237E TRANSMITTER OUTPUT VOLTAGE vs. LOAD CAPACITANCE (MBAUD = GND) MAX3237E TRANSMITTER OUTPUT VOLTAGE vs. LOAD CAPACITANCE MAX3237E TRANSMITTER OUTPUT VOLTAGE vs. LOAD CAPACITANCE (MBAUD = VCC) VOUT+ FOR DATA RATES UP TO 250kbps 1 TRANSMITTER AT 250kbps 4 TRANSMITTERS AT 15.6kbps ALL TRANSMITTERS LOADED WITH 3k + CL 2 1 0 -1 -2 -3 -4 -5 VOUT- -6 0 500 1000 1500 2000 LOAD CAPACITANCE (pF) 2500 3000 6 5 4 3 2 1 0 -1 -2 -3 -4 -5 -6 VOUT+ FOR DATA RATES UP TO 250kbps 1 TRANSMITTER 250kbps 4 TRANSMITTERS 15.6kbps ALL TRANSMITTERS LOADED WITH 3k + CL 7.5 1Mbps TRANSMITTER OUTPUT VOLTAGE (V) 6 5 4 3 5.0 2Mbps MAX3237E toc08 LOAD CAPACITANCE (pF) MAX3246E toc07A LOAD CAPACITANCE (pF) TRANSMITTER OUTPUT VOLTAGE (V) TRANSMITTER OUTPUT VOLTAGE (V) -SLEW 4 0 TRANSMITTER OUTPUT VOLTAGE (V) 14 12 T1 TRANSMITTING AT 250kbps T2 TRANSMITTING AT 15.6kbps 45 MAX3237E toc02 VOUT+ 4 3 2 1 0 -1 -2 -3 -4 -5 -6 16 MAX3237E toc01 6 5 MAX3222E/MAX3232E OPERATING SUPPLY CURRENT vs. LOAD CAPACITANCE MAX3222E/MAX3232E SLEW RATE vs. LOAD CAPACITANCE MAX3237E toc07 TRANSMITTER OUTPUT VOLTAGE (V) MAX3222E/MAX3232E TRANSMITTER OUTPUT VOLTAGE vs. LOAD CAPACITANCE 1.5Mbps 2.5 1 TRANSMITTER AT FULL DATA RATE 4 TRANSMITTERS AT 1/16 DATA RATE 3k + CL LOAD, EACH OUTPUT 0 -2.5 1.5Mbps 2Mbps -5.0 1Mbps VOUT-7.5 0 500 1000 1500 2000 LOAD CAPACITANCE (pF) 2500 3000 0 500 1000 1500 2000 LOAD CAPACITANCE (pF) _______________________________________________________________________________________ 5 MAX3222E/MAX3232E/MAX3237E/MAX3241E /MAX3246E __________________________________________Typical Operating Characteristics (VCC = +3.3V, 250kbps data rate, 0.1F capacitors, all transmitters loaded with 3k and CL, TA = +25C, unless otherwise noted.) Typical Operating Characteristics (continued) (VCC = +3.3V, 250kbps data rate, 0.1F capacitors, all transmitters loaded with 3k and CL, TA = +25C, unless otherwise noted.) SR+ 6 4 30 20 1 TRANSMITTER AT 250kbps 4 TRANSMITTERS AT 15.6kbps ALL TRANSMITTERS LOADED WITH 3k + CL 2 40 1 TRANSMITTER AT FULL DATA RATE 4 TRANSMITTERS AT 1/16 DATA RATE 3k + CL LOAD EACH OUTPUT 10 1500 2000 2500 500 TRANSMITTER SKEW (ns) MAX3237E toc12 60 40 |tPLH - tPHL| 1 TRANSMITTER AT 500kbps 4 TRANSMITTERS AT 1/16 DATA RATE ALL TRANSMITTERS LOADED WITH 3k + CL 20 0 0 500 1000 1500 TRANSMITTER OUTPUT VOLTAGE (V) MAX3237E TRANSMITTER SKEW vs. LOAD CAPACITANCE (MBAUD = VCC) 80 2000 VOUT+ 1 TRANSMITTER AT 250kbps 4 TRANSMITTERS AT 15.6kbps ALL TRANSMITTERS LOADED WITH 3k + 1000pF VOUT- 3.0 3.5 4.0 4.5 20 1 TRANSMITTER AT 250kbps 4 TRANSMITTERS AT 15.6kbps ALL TRANSMITTERS LOADED WITH 3k AND 1000pF 2.0 5.0 2.5 3.0 14 12 SR- 10 3.5 4.0 4.5 5.0 MAX3246E OPERATING SUPPLY CURRENT vs. LOAD CAPACITANCE 60 MAX3237E toc16 MAX3237E toc15 3000 SUPPLY VOLTAGE (V) 16 SLEW RATE (V/s) LOAD CAPACITANCE (pF) 5000 2500 0 2.5 SR+ 8 1 TRANSMITTER AT 250kbps 2 TRANSMITTERS AT 15.6kbps 55 50 45 40 250kbps 35 120kbps 30 25 20 15 20kbps 10 5 4 4000 2000 30 10 6 3000 1500 40 VOUT2000 1000 50 MAX3246E SLEW RATE vs. LOAD CAPACITANCE 1 TRANSMITTER AT 250kbps 2 TRANSMITTERS AT 15.6kbps 1000 500 SUPPLY VOLTAGE (V) VOUT+ 0 0 MAX3237E SUPPLY CURRENT vs. SUPPLY VOLTAGE (MBAUD = GND) 2.0 MAX3246E TRANSMITTER OUTPUT VOLTAGE vs. LOAD CAPACITANCE 6 1500 MAX3237E TRANSMITTER OUTPUT VOLTAGE vs. SUPPLY VOLTAGE (MBAUD = GND) LOAD CAPACITANCE (pF) 7 6 5 4 3 2 1 0 -1 -2 -3 -4 -5 -6 1000 LOAD CAPACITANCE (pF) 6 5 4 3 2 1 0 -1 -2 -3 -4 -5 -6 2000 1 TRANSMITTER AT 20kbps, 120kbps, 250kbps 4 TRANSMITTERS AT 15.6kbps ALL TRANSMITTERS LOADED WITH 3k + CL LOAD CAPACITANCE (pF) LOAD CAPACITANCE (pF) 100 20 0 0 3000 SUPPLY CURRENT (mA) 1000 SUPPLY CURRENT (mA) 500 MAX3237E toc13 0 20kbps 30 10 0 0 120kbps MAX3237E toc14 8 50 MAX3237E toc17 SLEW RATE (V/s) SLEW RATE (V/s) SR- 250kbps 40 -SLEW, 1Mbps +SLEW, 1Mbps -SLEW, 2Mbps +SLEW, 2Mbps MAX3237E toc11 60 SUPPLY CURRENT (mA) 10 50 MAX3237E toc10 70 MAX3237E toc09 12 MAX3237E SUPPLY CURRENT vs. LOAD CAPACITANCE WHEN TRANSMITTING DATA (MBAUD = GND) MAX3237E SLEW RATE vs. LOAD CAPACITANCE (MBAUD = VCC) MAX3237E SLEW RATE vs. LOAD CAPACITANCE (MBAUD = GND) TRANSMITTER OUTPUT VOLTAGE (V) MAX3222E/MAX3232E/MAX3237E/MAX3241E /MAX3246E 15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V, Up to 1Mbps, True RS-232 Transceivers 0 0 1000 2000 3000 4000 LOAD CAPACITANCE (pF) 5000 0 1000 2000 3000 4000 LOAD CAPACITANCE (pF) _______________________________________________________________________________________ 5000 15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V, Up to 1Mbps, True RS-232 Transceivers PIN MAX3222E MAX3232E TSSOP/ TQFN SSOP MAX3241E SO/DIP/ NAME MAX3237E MAX3246E SSOP/ SSOP/ 20-PIN TQFN SO 16-PIN TSSOP TSSOP FUNCTION TQFN SO/ DIP 19 1 1 -- -- -- 13* 23 22 B3 EN Receiver Enable. Active low. 1 2 2 16 1 2 28 28 28 F3 C1+ Positive Terminal of Voltage-Doubler ChargePump Capacitor 20 3 3 15 2 3 27 27 27 F1 V+ +5.5V Generated by the Charge Pump 2 4 4 1 3 4 25 24 23 F4 C1- Negative Terminal of Voltage-Doubler ChargePump Capacitor 3 5 5 2 4 5 1 1 29 E1 C2+ Positive Terminal of Inverting Charge-Pump Capacitor 4 6 6 3 5 6 3 2 30 D1 C2- Negative Terminal of Inverting Charge-Pump Capacitor 5 7 7 4 6 7 4 3 31 C1 V- -5.5V Generated by the Charge Pump 6, 15 8, 15 8, 17 5, 12 7, 14 8, 17 5, 6, 7, 10, 12 9, 10, 11 6, 7, 8 F6, E6, D6 T_OUT 7, 14 9, 14 9, 16 6, 11 8, 13 9, 16 8, 9, 11 4-8 1-5 A4, A5, A6, B6, C6 R_IN 8, 13 10, 13 10, 15 7, 10 9, 12 12, 15 18, 20, 21 C2, B1, A1, A2, A3 R_OUT 10, 11 11, 12 12, 13 8, 9 10, 11 13, 14 17*, 19*, 22*, 23*, 24* E3, E2, D2 T_IN 13, 14, 15-19 15, 17, 18 12, 13, 14 10, 11, 12 RS-232 Transmitter Outputs RS-232 Receiver Inputs TTL/CMOS Receiver Outputs TTL/CMOS Transmitter Inputs *These pins have an active positive feedback resistor internal to the MAX3237E, allowing unused inputs to be left unconnected. _______________________________________________________________________________________ 7 MAX3222E/MAX3232E/MAX3237E/MAX3241E /MAX3246E Pin Description 15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V, Up to 1Mbps, True RS-232 Transceivers MAX3222E/MAX3232E/MAX3237E/MAX3241E /MAX3246E Pin Description (continued) PIN MAX3222E MAX3241E SO/DIP/ NAME MAX3237E SSOP/ MAX3246E TSSOP/ SSOP/ 20-PIN SO/ TQFN TQFN SSOP 16-PIN TSSOP TSSOP TSSOP FUNCTION TQFN SO/ DIP 16 16 18 13 15 18 2 25 24 F5 GND Ground 17 17 19 14 16 19 26 26 26 F2 VCC +3.0V to +5.5V Supply Voltage 18 18 20 -- -- -- 14* 22 21 B2 SHDN 9, 12 8 MAX3232E -- 11, 14 -- -- 1, 10, 11, 20 -- -- C3, D3, B4, 9, 16, C4, D4, E4, 25, B5, C5, D5, 32 E5 N.C. Shutdown Control. Active low. No Connection. For MAX3246E, these locations are not populated with solder bumps. -- -- -- -- -- -- 15* -- -- -- MBAUD MegaBaud Control Input. Connect to GND for normal operation; connect to VCC for 1Mbps transmission rates. -- -- -- -- -- -- 16 20, 21 19, 20 -- R_OUTB Noninverting Complementary Receiver Outputs. Always active. EP -- -- EP -- -- -- -- EP -- GND Exposed Paddle. Solder the exposed paddle to the ground plane or leave unconnected. _______________________________________________________________________________________ 15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V, Up to 1Mbps, True RS-232 Transceivers VCC 0.1F 0.1F VCC C1+ C1+ V+ C1 C2+ C2 C2- C3 C1- MAX3222E MAX3232E MAX3237E MAX3241E MAX3246E C2+ VC2 C4 C2T_ OUT T_ IN MAX3222E MAX3232E MAX3237E MAX3241E MAX3246E C4 T_ OUT R_ IN R_ OUT 5k GND V- T_ IN R_ IN R_ OUT V+ C1 C3 C1- VCC 5k 3k 1000pF (2500pF, MAX3237E only) MINIMUM SLEW-RATE TEST CIRCUIT GND 7k 150pF MAXIMUM SLEW-RATE TEST CIRCUIT Figure 1. Slew-Rate Test Circuits Detailed Description Dual Charge-Pump Voltage Converter The MAX3222E/MAX3232E/MAX3237E/MAX3241E/ MAX3246Es' internal power supply consists of a regulated dual charge pump that provides output voltages of +5.5V (doubling charge pump) and -5.5V (inverting charge pump) over the +3.0V to +5.5V VCC range. The charge pump operates in discontinuous mode; if the output voltages are less than 5.5V, the charge pump is enabled, and if the output voltages exceed 5.5V, the charge pump is disabled. Each charge pump requires a flying capacitor (C1, C2) and a reservoir capacitor (C3, C4) to generate the V+ and V- supplies (Figure 1). RS-232 Transmitters The transmitters are inverting level translators that convert TTL/CMOS-logic levels to 5V EIA/TIA-232-compliant levels. The MAX3222E/MAX3232E/MAX3237E/MAX3241E/ MAX3246E transmitters guarantee a 250kbps data rate with worst-case loads of 3k in parallel with 1000pF, providing compatibility with PC-to-PC communication software (such as LapLinkTM). Transmitters can be paralleled to drive multiple receivers or mice. The MAX3222E/MAX3237E/MAX3241E/MAX3246E transmitters are disabled and the outputs are forced into a high-impedance state when the device is in shutdown mode (SHDN = GND). The MAX3222E/ MAX3232E/MAX3237E/MAX3241E/MAX3246E permit the outputs to be driven up to 12V in shutdown. The MAX3222E/MAX3232E/MAX3241E/MAX3246E transmitter inputs do not have pullup resistors. Connect unused inputs to GND or VCC. The MAX3237E's transmitter inputs have a 400k active positive-feedback resistor, allowing unused inputs to be left unconnected. MAX3237E MegaBaud Operation For higher-speed serial communications, the MAX3237E features MegaBaud operation. In MegaBaud operating mode (MBAUD = V CC ), the MAX3237E transmitters guarantee a 1Mbps data rate with worst-case loads of 3k in parallel with 250pF for +3.0V < VCC < +4.5V. For +5V 10% operation, the MAX3237E transmitters guarantee a 1Mbps data rate into worst-case loads of 3k in parallel with 1000pF. RS-232 Receivers The receivers convert RS-232 signals to CMOS-logic output levels. The MAX3222E/MAX3237E/MAX3241E/ MAX3246E receivers have inverting three-state outputs. Drive EN high to place the receiver(s) into a highimpedance state. Receivers can be either active or inactive in shutdown (Table 1). LapLink is a trademark of Traveling Software. _______________________________________________________________________________________ 9 MAX3222E/MAX3232E/MAX3237E/MAX3241E /MAX3246E VCC MAX3222E/MAX3232E/MAX3237E/MAX3241E /MAX3246E 15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V, Up to 1Mbps, True RS-232 Transceivers VCC 5V/div 0 VCC PREVIOUS RS-232 PROTECTION DIODE Rx SHDN T2OUT 2V/div 0 5k UART GND T1OUT VCC = 3.3V C1-C4 = 0.1F Tx SHDN = GND 40s/div Figure 3. Transmitter Outputs Recovering from Shutdown or Powering Up a) OLDER RS-232: POWERED-DOWN UART DRAWS CURRENT FROM A ACTIVE RECEIVER OUTPUT IN SHUTDOWN. VCC TO P MAX3222E/MAX3237E/MAX3241E/ MAX3246E Shutdown Mode LOGIC TRANSITION DETECTOR MAX3237E/MAX3241E R1OUTB VCC PROTECTION DIODE Rx EN = VCC UART Tx GND R1IN R1OUT THREE-STATED T1IN 5k T1OUT SHDN = GND b) NEW MAX3237E/MAX3241E: EN SHUTS DOWN RECEIVER OUTPUTS B (EXCEPT FOR B OUTPUTS), SO NO CURRENT FLOWS TO UART IN SHUTDOWN. B B OUTPUTS INDICATE RECEIVER ACTIVITY DURING SHUTDOWN WITH EN HIGH. Figure 2. Detection of RS-232 Activity when the UART and Interface are Shut Down; Comparison of MAX3237E/MAX3241E (b) with Previous Transceivers (a) The complementary outputs on the MAX3237E/ MAX3241E (R_OUTB) are always active, regardless of the state of EN or SHDN. This allows the device to be used for ring indicator applications without forward biasing other devices connected to the receiver outputs. This is ideal for systems where VCC drops to zero in shutdown to accommodate peripherals such as UARTs (Figure 2). 10 Supply current falls to less than 1A in shutdown mode (SHDN = low). The MAX3237E's supply current falls to10nA (typ) when all receiver inputs are in the invalid range (-0.3V < R_IN < +0.3). When shut down, the device's charge pumps are shut off, V+ is pulled down to VCC, V- is pulled to ground, and the transmitter outputs are disabled (high impedance). The time required to recover from shutdown is typically 100s, as shown in Figure 3. Connect SHDN to VCC if shutdown mode is not used. SHDN has no effect on R_OUT or R_OUTB (MAX3237E/MAX3241E). 15kV ESD Protection As with all Maxim devices, ESD-protection structures are incorporated to protect against electrostatic discharges encountered during handling and assembly. The driver outputs and receiver inputs of the MAX3222E/MAX3232E/MAX3237E/MAX3241E/MAX3246E have extra protection against static electricity. Maxim's engineers have developed state-of-the-art structures to protect these pins against ESD of 15kV without damage. The ESD structures withstand high ESD in all states: normal operation, shutdown, and powered down. After an ESD event, Maxim's E versions keep working without latchup, whereas competing RS-232 products can latch and must be powered down to remove latchup. Furthermore, the MAX3237E logic I/O pins also have 15kV ESD protection. Protecting the logic I/O pins to 15kV makes the MAX3237E ideal for data cable applications. ______________________________________________________________________________________ 15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V, Up to 1Mbps, True RS-232 Transceivers SHDN EN T_OUT R_OUT R_OUTB (MAX3237E/ MAX3241E) 0 0 High impedance Active Active 0 1 High impedance High impedance Active 1 0 Active Active Active 1 1 Active High impedance Active RC 1M CHARGE-CURRENTLIMIT RESISTOR HIGHVOLTAGE DC SOURCE Cs 100pF RD 1500 * 8kV using the Contact Discharge method specified in IEC 1000-4-2 * 9kV (MAX3246E only) using the Contact Discharge method specified in IEC 1000-4-2 * 15kV using the Air-Gap Discharge method specified in IEC 1000-4-2 IP 100% 90% DISCHARGE RESISTANCE STORAGE CAPACITOR ESD protection can be tested in various ways; the transmitter outputs and receiver inputs for the MAX3222E/MAX3232E/MAX3241E/MAX3246E are characterized for protection to the following limits: * 15kV using the Human Body Model Ir PEAK-TO-PEAK RINGING (NOT DRAWN TO SCALE) AMPERES 36.8% DEVICEUNDERTEST 10% 0 0 TIME tRL tDL CURRENT WAVEFORM Figure 4b. Human Body Model Current Waveform Figure 4a. Human Body ESD Test Model I 100% CHARGE-CURRENTLIMIT RESISTOR HIGHVOLTAGE DC SOURCE Cs 150pF RD 330 90% DISCHARGE RESISTANCE STORAGE CAPACITOR I PEAK RC 50M to 100M DEVICEUNDERTEST 10% t r = 0.7ns to 1ns t 30ns 60ns Figure 5a. IEC 1000-4-2 ESD Test Model Figure 5b. IEC 1000-4-2 ESD Generator Current Waveform ______________________________________________________________________________________ 11 MAX3222E/MAX3232E/MAX3237E/MAX3241E /MAX3246E Table 1. MAX3222E/MAX3237E/MAX3241E/ MAX3246E Shutdown and Enable Control Truth Table C1 (F) VCC (V) C2, C3, C4 (F) MAX3222E/MAX3232E/MAX3241E 3.0 to 3.6 0.1 0.1 4.5 to 5.5 0.047 0.33 3.0 to 5.5 0.1 0.47 MAX3237E/MAX3246E 3.0 to 3.6 0.22 0.22 3.15 to 3.6 0.1 0.1 4.5 to 5.5 0.047 0.33 3.0 to 5.5 0.22 1.0 Table 3. Logic-Family Compatibility with Various Supply Voltages VCC SUPPLY VOLTAGE (V) 3.3 3.3 Compatible with all CMOS families 5 5 Compatible with all TTL and CMOS families 3.3 COMPATIBILITY Compatible with ACT and HCT CMOS, and with AC, HC, or CD4000 CMOS For the MAX3237E, all logic and RS-232 I/O pins are characterized for protection to 15kV per the Human Body Model. ESD Test Conditions ESD performance depends on a variety of conditions. Contact Maxim for a reliability report that documents test setup, test methodology, and test results. Human Body Model Figure 4a shows the Human Body Model, and Figure 4b shows the current waveform it generates when discharged into a low impedance. This model consists of a 100pF capacitor charged to the ESD voltage of interest, which is then discharged into the test device through a 1.5k resistor. 12 5 4 3 VOUT+ VCC = 3.0V 2 1 VOUT+ 0 -1 -2 VCC -3 -4 VOUTVOUT- -5 -6 0 1 2 3 4 5 6 7 8 9 10 LOAD CURRENT PER TRANSMITTER (mA) Figure 6a. MAX3241E Transmitter Output Voltage vs. Load Current Per Transmitter IEC 1000-4-2 SYSTEM POWER-SUPPLY VOLTAGE (V) 5 6 MAX3222E-fig06a Table 2. Required Minimum Capacitor Values TRANSMITTER OUTPUT VOLTAGE (V) MAX3222E/MAX3232E/MAX3237E/MAX3241E /MAX3246E 15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V, Up to 1Mbps, True RS-232 Transceivers The IEC 1000-4-2 standard covers ESD testing and performance of finished equipment; it does not specifically refer to integrated circuits. The MAX3222E/ MAX3232E/MAX3237E/MAX3241E/MAX3246E help you design equipment that meets level 4 (the highest level) of IEC 1000-4-2, without the need for additional ESDprotection components. The major difference between tests done using the Human Body Model and IEC 1000-4-2 is higher peak current in IEC 1000-4-2, because series resistance is lower in the IEC 1000-4-2 model. Hence, the ESD withstand voltage measured to IEC 1000-4-2 is generally lower than that measured using the Human Body Model. Figure 5a shows the IEC 1000-4-2 model, and Figure 5b shows the current waveform for the 8kV IEC 1000-4-2 level 4 ESD Contact Discharge test. The AirGap Discharge test involves approaching the device with a charged probe. The Contact Discharge method connects the probe to the device before the probe is energized. Machine Model The Machine Model for ESD tests all pins using a 200pF storage capacitor and zero discharge resistance. Its objective is to emulate the stress caused by contact that occurs with handling and assembly during manufacturing. All pins require this protection during manufacturing, not just RS-232 inputs and outputs. Therefore, after PC board assembly, the Machine Model is less relevant to I/O ports. ______________________________________________________________________________________ 15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V, Up to 1Mbps, True RS-232 Transceivers 28 C1 C2 C1+ 24 C1- 1 C2+ 2 CBYPASS 26 VCC V+ 27 C3 COMPUTER SERIAL PORT V- MAX3241E 3 C4 14 C2T1IN T1OUT 9 13 T2IN T2OUT 10 12 T3IN T3OUT 11 21 R1OUTB 20 R2OUTB 19 R1OUT 18 R2OUT 17 +V +V VCC -V GND Tx R1IN 4 5k R2IN 5 R3OUT 5k R3IN 6 16 R4OUT 5k R4IN 7 15 R5OUT R5IN 8 23 EN SHDN 22 MOUSE 5k 5k GND 25 VCC Figure 6b. Mouse Driver Test Circuit Applications Information Capacitor Selection The capacitor type used for C1-C4 is not critical for proper operation; polarized or nonpolarized capacitors can be used. The charge pump requires 0.1F capacitors for 3.3V operation. For other supply voltages, see Table 2 for required capacitor values. Do not use values smaller than those listed in Table 2. Increasing the capacitor values (e.g., by a factor of 2) reduces ripple on the transmitter outputs and slightly reduces power consumption. C2, C3, and C4 can be increased without changing C1's value. However, do not increase C1 without also increasing the values of C2, C3, C4, and CBYPASS to maintain the proper ratios (C1 to the other capacitors). excessively with temperature. If in doubt, use capacitors with a larger nominal value. The capacitor's equivalent series resistance (ESR), which usually rises at low temperatures, influences the amount of ripple on V+ and V-. Power-Supply Decoupling In most circumstances, a 0.1F VCC bypass capacitor is adequate. In applications sensitive to power-supply noise, use a capacitor of the same value as chargepump capacitor C1. Connect bypass capacitors as close to the IC as possible. Operation Down to 2.7V Transmitter outputs meet EIA/TIA-562 levels of 3.7V with supply voltages as low as 2.7V. When using the minimum required capacitor values, make sure the capacitor value does not degrade ______________________________________________________________________________________ 13 MAX3222E/MAX3232E/MAX3237E/MAX3241E /MAX3246E VCC = +3.0V TO +5.5V MAX3222E/MAX3232E/MAX3237E/MAX3241E /MAX3246E 15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V, Up to 1Mbps, True RS-232 Transceivers Transmitter Outputs Recovering from Shutdown Figure 3 shows two transmitter outputs recovering from shutdown mode. As they become active, the two transmitter outputs are shown going to opposite RS-232 levels (one transmitter input is high; the other is low). Each transmitter is loaded with 3k in parallel with 2500pF. The transmitter outputs display no ringing or undesirable transients as they come out of shutdown. Note that the transmitters are enabled only when the magnitude of V- exceeds approximately -3.0V. Mouse Drivability The MAX3241E is designed to power serial mice while operating from low-voltage power supplies. It has been tested with leading mouse brands from manufacturers such as Microsoft and Logitech. The MAX3241E successfully drove all serial mice tested and met their current and voltage requirements. VCC 0.1F T1IN 5V/div T1OUT 5V/div VCC C1+ V+ C3 C1 C1C2+ C2 C2- MAX3222E MAX3232E MAX3237E MAX3241E MAX3246E VC4 VCC = 3.3V, C1-C4 = 0.1F T_ OUT T_ IN 5V/div R1OUT 2s/div R_ IN R_ OUT 5k Figure 9. MAX3241E Loopback Test Result at 250kbps 1000pF GND +5V T_IN 0 Figure 7. Loopback Test Circuit +5V T_OUT 5k + 250pF 0 -5V 5V/div T1IN +5V VCC = 3.3V C1-C4 = 0.1F R_OUT 0 5V/div T1OUT R1OUT 400ns/div Figure 10. MAX3237E Loopback Test Result at 1000kbps (MBAUD = VCC) 5V/div VCC = 3.3V C1-C4 = 0.1F 2s/div Figure 8. MAX3241E Loopback Test Result at 120kbps 14 ______________________________________________________________________________________ 15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V, Up to 1Mbps, True RS-232 Transceivers High Data Rates The MAX3222E/MAX3232E/MAX3237E/MAX3241E/ MAX3246E maintain the RS-232 5V minimum transmitter output voltage even at high data rates. Figure 7 shows a transmitter loopback test circuit. Figure 8 shows a loopback test result at 120kbps, and Figure 9 shows the same test at 250kbps. For Figure 8, all transmitters were driven simultaneously at 120kbps into RS232 loads in parallel with 1000pF. For Figure 9, a single transmitter was driven at 250kbps, and all transmitters were loaded with an RS-232 receiver in parallel with 1000pF. The MAX3237E maintains the RS-232 5.0V minimum transmitter output voltage at data rates up to 1Mbps. Figure 10 shows a loopback test result at 1Mbps with MBAUD = VCC. For Figure 10, all transmitters were loaded with an RS-232 receiver in parallel with 250pF. Interconnection with 3V and 5V Logic The MAX3222E/MAX3232E/MAX3237E/MAX3241E/ MAX3246E can directly interface with various 5V logic families, including ACT and HCT CMOS. See Table 3 for more information on possible combinations of interconnections. UCSP Reliability The UCSP represents a unique packaging form factor that may not perform equally to a packaged product through traditional mechanical reliability tests. UCSP reliability is integrally linked to the user's assembly methods, circuit board material, and usage environment. The user should closely review these areas when considering use of a UCSP package. Performance through Operating Life Test and Moisture Resistance remains uncompromised as the wafer-fabrication process primarily determines it. Mechanical stress performance is a greater consideration for a UCSP package. UCSPs are attached through direct solder contact to the user's PC board, foregoing the inherent stress relief of a packaged product lead frame. Solder joint contact integrity must be considered. Table 4 shows the testing done to characterize the UCSP reliability performance. In conclusion, the UCSP is capable of performing reliably through environmental stresses as indicated by the results in the table. Additional usage data and recommendations are detailed in Application Note 1891: Wafer-Level Packaging (WLP) and Its Applications. Table 4. Reliability Test Data TEST CONDITIONS DURATION FAILURES PER SAMPLE SIZE 150 cycles, 900 cycles 0/10, 0/200 Temperature Cycle TA = -35C to +85C, TA = -40C to +100C Operating Life TA = +70C 240 hours 0/10 Moisture Resistance TA = +20C to +60C, 90% RH 240 hours 0/10 Low-Temperature Storage TA = -20C 240 hours 0/10 Low-Temperature Operational TA = -10C 24 hours 0/10 Solderability 8-hour steam age -- 0/15 ESD 15kV, Human Body Model -- 0/5 High-Temperature Operating Life TJ = +150C 168 hours 0/45 ______________________________________________________________________________________ 15 MAX3222E/MAX3232E/MAX3237E/MAX3241E /MAX3246E Figure 6a shows the transmitter output voltages under increasing load current at +3.0V. Figure 6b shows a typical mouse connection using the MAX3241E. __________________________________________________________Pin Configurations TOP VIEW EN 1 18 SHDN C1+ 2 17 VCC V+ 3 16 GND 15 T1OUT C1- 4 C2+ 5 C2- MAX3222E 6 20 SHDN N.C. 1 20 N.C. C1+ 1 16 VCC C1+ 2 19 VCC C1+ 2 19 VCC V+ 2 15 GND V+ 3 18 GND V+ 3 18 GND C1- 3 17 T1OUT C2+ 4 16 R1IN C2- 5 EN 1 17 T1OUT C1- 4 14 R1IN C2+ 5 13 R1OUT C2- 6 MAX3222E C1- 4 16 R1IN C2+ 5 15 R1OUT C2- 6 MAX3232E 15 R1OUT V- 7 12 T1IN V- 7 14 N.C. V- 7 T2OUT 8 11 T2IN T2OUT 8 13 T1IN T2OUT 8 R2IN 9 12 T2IN R2IN 9 12 R2OUT R2OUT 10 11 N.C. N.C. 10 11 N.C. R2IN 10 R2OUT 9 14 T1OUT MAX3232E 13 R1IN 12 R1OUT V- 6 11 T1IN 10 T2IN 14 T1IN T2OUT 7 13 T2IN R2IN 8 9 R2OUT SO/DIP/SSOP/TSSOP SO/DIP N.C. V- C2- C2+ C1+ V+ VCC N.C. 31 30 29 28 27 26 25 TOP VIEW 28 C1+ C2+ 1 2 27 V+ C2- 2 27 V+ 3 26 VCC V- 3 26 VCC V- 4 25 C1- R1IN 4 25 GND R1IN 1 24 GND T1OUT 5 24 T1IN R2IN 5 24 C1- R2IN 2 23 C1- 23 EN R3IN 3 22 EN 4 21 SHDN 20 R1OUTB C2+ 1 GND C2- T2OUT MAX3237E 6 23 T2IN R3IN 6 28 C1+ 32 TSSOP TSSOP/SSOP MAX3241E T3OUT 7 22 T3IN R4IN 7 22 SHDN R4IN R1IN 8 21 R1OUT R5IN 8 21 R1OUTB R5IN 5 R2IN 9 20 R2OUT T1OUT 9 19 T4IN T2OUT 10 MAX3241E SHDN 14 15 MBAUD T1IN 14 15 R5OUT SSOP 16 SSOP/SO/TSSOP 16 16 R4OUT N.C. EN 13 15 17 R3OUT T2IN 13 R3OUT T3IN 12 16 R1OUTB 14 17 T5IN T5OUT 12 13 R2OUT R4OUT 8 R5OUT 18 R2OUT 18 R3OUT R3IN 11 12 T3OUT 11 17 11 R1OUT T3OUT T1IN R2OUTB 18 T2IN 19 7 9 6 T2OUT 10 T1OUT N.C. 20 R2OUTB 19 R1OUT T4OUT 10 T3IN MAX3222E/MAX3232E/MAX3237E/MAX3241E /MAX3246E 15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V, Up to 1Mbps, True RS-232 Transceivers QFN ______________________________________________________________________________________ 15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V, Up to 1Mbps, True RS-232 Transceivers T1IN 12 11 GND 16 10 T2IN VCC 17 9 N.C. SHDN 18 8 R2OUT 7 R2IN 6 T2OUT MAX3222E EN 19 GND 13 8 T2IN VCC 14 7 R2OUT 6 R2IN 5 T2OUT MAX3232E EXPOSED PADDLE 3 4 5 1 2 3 4 C2+ C2- V- C1+ 16 C1- C1- 9 V- C1+ 10 C2- 2 11 C2+ 1 12 V+ 15 EXPOSED PADDLE V+ 20 T1IN N.C. 13 R1OUT R1OUT 14 R1IN R1IN 15 TOP VIEW T1OUT T1OUT TOP VIEW TQFN TQFN TOP VIEW (BUMPS ON BOTTOM) B2: SHDN C2: R1OUT D2: T3IN E2: T2IN B3: EN E3: T1IN BUMPS B4, B5, C3, C4, C5, D3, D4, D5, E4, AND E5 NOT POPULATED R4OUT R5OUT R1IN R2IN R3OUT A1 A2 A3 A4 A5 R2OUT B1 B2 B3 V- C1 C2 C2- D1 D2 C2+ E1 E2 E3 V+ F1 F2 F3 F4 F5 VCC C1+ C1- GND A6 R3IN B6 R4IN C6 R5IN MAX3246E D6 T3OUT E6 T2OUT F6 T1OUT UCSP ______________________________________________________________________________________ 17 MAX3222E/MAX3232E/MAX3237E/MAX3241E /MAX3246E Pin Configurations (continued) MAX3222E/MAX3232E/MAX3237E/MAX3241E /MAX3246E 15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V, Up to 1Mbps, True RS-232 Transceivers __________________________________________________Typical Operating Circuits +3.3V +3.3V 17 CBYPASS C1 0.1F 2 C1+ 4 5 C2 0.1F 6 C1- V+ MAX3222E C2+ V- 3 C3* 0.1F C1 0.1F C4 0.1F C2 0.1F 7 C2- 12 T1IN 10 R2OUT 1 V- R2IN 9 GND 16 SHDN C4 0.1F RS-232 OUTPUTS T2OUT 7 R1IN 13 TTL/CMOS OUTPUTS 5k 9 R2OUT R2IN 8 5k 18 GND 15 *C3 CAN BE RETURNED TO EITHER VCC OR GROUND. NOTE: PIN NUMBERS REFER TO SO/DIP PACKAGES. MAX3222E PINOUT REFERS TO SO/DIP PACKAGES. MAX3232E PINOUT REFERS TO TSSOP/SSOP/SO/DIP/ PACKAGES SEE TABLE 2 FOR CAPACITOR SELECTION. 18 6 T1OUT 14 5k EN C3* 0.1F C2- 12 R1OUT RS-232 INPUTS 5k MAX3232E C2+ 10 T2IN R1IN 14 TTL/CMOS OUTPUTS 5 C1- 2 TTL/CMOS INPUTS T2OUT 8 13 R1OUT 3 V+ 11 T1IN RS-232 OUTPUTS TTL/CMOS INPUTS VCC 1 C1+ 4 T1OUT 15 11 T2IN 16 CBYPASS VCC ______________________________________________________________________________________ RS-232 INPUTS 15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V, Up to 1Mbps, True RS-232 Transceivers +3.3V +3.3V CBYPASS 28 C1+ CBYPASS 26 VCC 27 V+ 0.1F 25 1 0.1F 3 C1C2+ V- 23 T2IN 22 T3IN 19 T4IN T1 T2 T3 T4 C1 0.1F 4 C2 0.1F T1OUT 5 T2OUT 6 T3OUT 7 28 C1+ 24 1 0.1F C2- 24 T1IN LOGIC INPUTS MAX3237E C3* 0.1F TTL/CMOS INPUTS RS-232 OUTPUTS 2 C1- 26 VCC 27 V+ MAX3241E C2+ V- C3* 0.1F 3 C4 0.1F C2- 14 T1IN T1OUT 9 13 T2IN T2OUT 10 12 T3IN T3OUT 11 RS-232 OUTPUTS 21 R1OUTB T4OUT 10 20 R2OUTB 17 T5IN T5 T5OUT 12 19 R1OUT R1IN 4 16 R1OUTB 5k R2IN 18 R2OUT 21 R1OUT TTL/CMOS OUTPUTS 5k LOGIC OUTPUTS 20 R2OUT 5 R1IN 8 R1 R2IN R2 9 RS-232 INPUTS 5k 17 R3OUT R3IN 6 RS-232 INPUTS 5k 5k 18 R3OUT R3IN 11 R3 16 R4OUT R4IN 7 5k 5k 15 R5OUT MBAUD 13 EN GND SHDN R5IN 8 15 14 2 5k 23 EN GND SHDN 22 25 *C3 CAN BE RETURNED TO EITHER VCC OR GROUND. ______________________________________________________________________________________ 19 MAX3222E/MAX3232E/MAX3237E/MAX3241E /MAX3246E _____________________________________Typical Operating Circuits (continued) MAX3222E/MAX3232E/MAX3237E/MAX3241E /MAX3246E 15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V, Up to 1Mbps, True RS-232 Transceivers _____________________________________Typical Operating Circuits (continued) +3.3V CBYPASS C1 0.1F F3 C1+ F4 E1 C2 0.1F TTL/CMOS INPUTS D1 C1- F2 VCC F1 V+ MAX3246E C2+ V- C3* 0.1F C1 C4 0.1F C2- E3 T1IN T1OUT F6 E2 T2IN T2OUT E6 D2 T3IN T3OUT D6 C2 R1OUT RS-232 OUTPUTS R1IN A4 5k R2IN B1 R2OUT A5 5k TTL/CMOS OUTPUTS A1 R3OUT R3IN A6 RS-232 INPUTS 5k A2 R4OUT R4IN B6 5k A3 R5OUT R5IN C6 5k B3 EN GND SHDN B2 F5 *C3 CAN BE RETURNED TO EITHER VCC OR GROUND. 20 ______________________________________________________________________________________ 15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V, Up to 1Mbps, True RS-232 Transceivers PART NO. OF GUARANTEED LOW-POWER DRIVERS/ DATA RATE SHUTDOWN RECEIVERS (bps) MAX3222E 2/2 250k MAX3232E 2/2 -- 250k MAX3237E (Normal) 5/3 250k MAX3237E (MegaBaud) 5/3 1M MAX3241E 3/5 250k MAX3246E 3/5 250k ___________________ Chip Information TRANSISTOR COUNT: MAX3222E/MAX3232E: 1129 MAX3237E: 2110 MAX3241E: 1335 MAX3246E: 842 PROCESS: BICMOS Ordering Information (continued) PART PINTEMP RANGE PACKAGE PKG CODE MAX3232ECTE 0C to +70C 16 Thin QFNEP** (5mm x 5mm) T1655-2 MAX3232ECUE 0C to +70C 16 TSSOP -- MAX3232ECUP 0C to +70C 20 TSSOP -- MAX3232EEAE -40C to +85C 16 SSOP -- MAX3232EEWE -40C to +85C 16 Wide SO -- MAX3232EEPE -40C to +85C 16 Plastic DIP -- MAX3232EETE -40C to +85C 16 Thin QFNEP** (5mm x 5mm) T1655-2 MAX3232EEUE -40C to +85C 16 TSSOP -- MAX3232EEUP -40C to +85C 20 TSSOP -- MAX3237ECAI 0C to +70C 28 SSOP -- MAX3237EEAI -40C to +85C 28 SSOP -- MAX3241ECAI 0C to +70C 28 SSOP -- MAX3241ECWI 0C to +70C 28 Wide SO -- MAX3241ECUI 0C to +70C 28 TSSOP -- MAX3241ECTJ 0C to +70C 32 Thin QFN -- MAX3241EEAI -40C to +85C 28 SSOP -- MAX3241EEWI -40C to +85C 28 Wide SO -- MAX3241EEUI -40C to +85C 28 TSSOP -- 0C to +70C 6 x 6 UCSP -- MAX3246EEBX-T -40C to +85C 6 x 6 UCSP -- MAX3246ECBX-T Requires solder temperature profile described in the Absolute Maximum Ratings section. UCSP Reliability is integrally linked to the user's assembly methods, circuit board material, and environment. Refer to the UCSP Reliability Notice in the UCSP Reliability section of this datasheet for more information. **EP = Exposed paddle. ______________________________________________________________________________________ 21 MAX3222E/MAX3232E/MAX3237E/MAX3241E /MAX3246E Selector Guide Package Information (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to www.maxim-ic.com/packages.) QFN THIN.EPS MAX3222E/MAX3232E/MAX3237E/MAX3241E /MAX3246E 15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V, Up to 1Mbps, True RS-232 Transceivers 22 ______________________________________________________________________________________ 15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V, Up to 1Mbps, True RS-232 Transceivers ______________________________________________________________________________________ 23 MAX3222E/MAX3232E/MAX3237E/MAX3241E /MAX3246E Package Information (continued) (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to www.maxim-ic.com/packages.) Package Information (continued) (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to www.maxim-ic.com/packages.) TSSOP4.40mm.EPS MAX3222E/MAX3232E/MAX3237E/MAX3241E /MAX3246E 15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V, Up to 1Mbps, True RS-232 Transceivers 24 ______________________________________________________________________________________ 15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V, Up to 1Mbps, True RS-232 Transceivers 36L,UCSP.EPS PACKAGE OUTLINE, 6x6 UCSP 21-0082 K 1 1 ______________________________________________________________________________________ 25 MAX3222E/MAX3232E/MAX3237E/MAX3241E /MAX3246E Package Information (continued) (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to www.maxim-ic.com/packages.) Package Information (continued) (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to www.maxim-ic.com/packages.) INCHES N E DIM A A1 B C e E H L H MAX MIN 0.093 0.104 0.004 0.012 0.014 0.019 0.013 0.009 0.050 0.299 0.291 0.394 0.419 0.050 0.016 SOICW.EPS MAX3222E/MAX3232E/MAX3237E/MAX3241E /MAX3246E 15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V, Up to 1Mbps, True RS-232 Transceivers MILLIMETERS MIN 2.35 0.10 0.35 0.23 MAX 2.65 0.30 0.49 0.32 1.27 7.40 7.60 10.00 10.65 0.40 1.27 VARIATIONS: 1 INCHES TOP VIEW DIM D D D D D D A B e FRONT VIEW MIN 0.398 0.447 0.496 0.598 0.697 MAX 0.413 0.463 0.512 0.614 0.713 MILLIMETERS MIN 10.10 11.35 12.60 15.20 17.70 MAX 10.50 11.75 13.00 15.60 18.10 N MS013 16 AA 18 AB 20 AC 24 AD 28 AE C 0-8 A1 L SIDE VIEW PROPRIETARY INFORMATION TITLE: PACKAGE OUTLINE, .300" SOIC APPROVAL 26 DOCUMENT CONTROL NO. 21-0042 ______________________________________________________________________________________ REV. B 1 1 15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V, Up to 1Mbps, True RS-232 Transceivers SSOP.EPS 2 1 INCHES E H MILLIMETERS DIM MIN MAX MIN MAX A 0.068 0.078 1.73 1.99 A1 0.002 0.008 0.05 0.21 B 0.010 0.015 0.25 0.38 C D 0.09 0.20 0.004 0.008 SEE VARIATIONS E 0.205 e 0.212 0.0256 BSC 5.20 INCHES D D D D D 5.38 MILLIMETERS MIN MAX MIN MAX 0.239 0.239 0.278 0.249 0.249 0.289 6.07 6.07 7.07 6.33 6.33 7.33 0.317 0.397 0.328 0.407 8.07 10.07 8.33 10.33 N 14L 16L 20L 24L 28L 0.65 BSC H 0.301 0.311 7.65 7.90 L 0.025 0 0.037 8 0.63 0 0.95 8 N A C B e A1 L D NOTES: 1. D&E DO NOT INCLUDE MOLD FLASH. 2. MOLD FLASH OR PROTRUSIONS NOT TO EXCEED .15 MM (.006"). 3. CONTROLLING DIMENSION: MILLIMETERS. 4. MEETS JEDEC MO150. 5. LEADS TO BE COPLANAR WITHIN 0.10 MM. PROPRIETARY INFORMATION TITLE: PACKAGE OUTLINE, SSOP, 5.3 MM APPROVAL DOCUMENT CONTROL NO. 21-0056 REV. C 1 1 ______________________________________________________________________________________ 27 MAX3222E/MAX3232E/MAX3237E/MAX3241E /MAX3246E Package Information (continued) (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to www.maxim-ic.com/packages.) Package Information (continued) (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to www.maxim-ic.com/packages.) PDIPN.EPS MAX3222E/MAX3232E/MAX3237E/MAX3241E /MAX3246E 15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V, Up to 1Mbps, True RS-232 Transceivers 28 ______________________________________________________________________________________ 15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V, Up to 1Mbps, True RS-232 Transceivers REVISION NUMBER REVISION DATE 11 10/07 DESCRIPTION Corrected Package Information PAGES CHANGED 22-28 Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 29 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 (c) 2007 Maxim Integrated Products is a registered trademark of Maxim Integrated Products, Inc. MAX3222E/MAX3232E/MAX3237E/MAX3241E /MAX3246E Revision History