19-3598; Rev 0; 2/05 Industry-Standard High-Speed CAN Transceivers with 80V Fault Protection The MAX13050/MAX13052/MAX13053/MAX13054 are pin-for-pin compatible, industry-standard, high-speed, control area network (CAN) transceivers with extended 80V fault protection. These products are ideal automotive and industrial network applications where overvoltage protection is required. These CAN transceivers provide a link between the CAN protocol controller and the physical wires of the bus lines in a CAN. These devices can be used for +12V/+42V battery, automotive, and DeviceNet(R) applications, requiring data rates up to 1Mbps. The CAN transceivers have an input common-mode range greater than 12V, exceeding the ISO11898 specification of -2V to +7V, and feature 8kV ESD protection, making these devices ideal for harsh automotive and industrial environments. The CAN transceivers provide a dominant timeout function that prevents erroneous CAN controllers from clamping the bus to a dominant level if the TXD input is held low for greater than 1ms. The MAX13050/MAX13052 provide a SPLIT pin used to stabilize the recessive commonmode voltage. The MAX13052 also has a slope-control mode that can be used to program the slew rate of the transmitter for data rates of up to 500kbps. The MAX13053 features a silent mode that disables the transmitter. The MAX13053 also has a reference output that can be used to bias the input of older CAN controllers that have a differential comparator. The MAX13054 has a separate dedicated logic input, VCC2, allowing interfacing with a +3.3V microcontroller. The MAX13050/MAX13052/MAX13053/MAX13054 are available in an 8-pin SO package and are specified to operate in the -40C to +85C and the -40C to +125C temperature ranges. Applications +12V and +42V Automotive Medium- and Heavy-Duty Truck Systems DeviceNet Nodes Industrial Features Fully Compatible with the ISO11898 Standard 8kV ESD IEC 61000-4-2 Contact Discharge per IBEE Test Facility 80V Fault Protection +3.3V Logic Compatible (MAX13054) High-Speed Operation of Up to 1Mbps Slope-Control Mode (MAX13052) Greater than 12V Common-Mode Range Low-Current Standby Mode Silent Mode (MAX13053) Thermal Shutdown Short-Circuit Protection Transmit (TXD) Data Dominant Timeout Current Limiting SPLIT Pin (MAX13050/MAX13052) Ordering Information PART TEMP RANGE PIN-PACKAGE MAX13050ESA -40C to +85C 8 SO MAX13050ASA/AUT* -40C to +125C 8 SO MAX13052ESA -40C to +85C 8 SO MAX13052ASA/AUT* -40C to +125C 8 SO MAX13053ESA -40C to +85C 8 SO MAX13053ASA/AUT* -40C to +125C 8 SO MAX13054ESA -40C to +85C 8 SO MAX13054ASA/AUT* -40C to +125C 8 SO *AUT denotes introduction to AECQ100 specifications. Pin Configurations, Functional Diagrams, and Typical Operating Circuits appear at end of data sheet. DeviceNet is a registered trademark of the Open DeviceNet Vendor Association. Selector Guide PART SPLIT SLOPE CONTROL STANDBY MODE SILENT MODE 3.3V SUPPLY REF PIN-FOR-PIN REPLACEMENT MAX13050 Yes -- Yes -- -- -- TJA1040 MAX13052 Yes Yes Yes -- -- -- PCA82C250/5-1 MAX13053 -- -- -- Yes -- Yes TJA1050, AMIS-30660 MAX13054 -- -- Yes Yes -- TLE6250v33, CF163 ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim's website at www.maxim-ic.com. 1 MAX13050/MAX13052/MAX13053/MAX13054 General Description MAX13050/MAX13052/MAX13053/MAX13054 Industry-Standard High-Speed CAN Transceivers with 80V Fault Protection ABSOLUTE MAXIMUM RATINGS VCC, VCC2 ...............................................................-0.3V to +6V RS ...............................................................-0.3V to (VCC + 0.3V) TXD, STBY, S, REF, RXD .........................................-0.3V to +6V CANH, CANL, SPLIT .......................................................... 80V Continuous Power Dissipation (TA = +70C) 8-Pin SO (derate 5.9mW/C above +70C) .................470mW Operating Temperature Range .........................-40C to +125C Junction Temperature ......................................................+150C Storage Temperature Range .................................-65C +150C Lead Temperature (soldering, 10s) ................................+300C 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. DC ELECTRICAL CHARACTERISTICS (VCC = +5V 5%, VCC2 = +3V to +3.6V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +5V, VCC2 = +3.3V, RL = 60, and TA = +25C.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP Dominant, RL = 60 VCC Supply Current ICC VCC2 Supply Current ICC2 Recessive Silent Mode Thermal-Shutdown Threshold ISTANDBY ISILENT UNITS 72 MAX13050/MAX13052/ MAX13053 12.5 MAX13054 Standby Current MAX mA 10 MAX13054, TXD = VCC2 or floating 15 MAX13052 25 MAX13050/MAX13054 11 MAX13053 12.5 TSH Thermal-Shutdown Hysteresis A A mA +165 C 13 C INPUT LEVELS (TXD, STBY, S) 2 High-Level Input Voltage VIH Low-Level Input Voltage VIL High-Level Input Current IIH Low-Level Input Current IIL TXD, STBY (MAX13054) V 0.7 x VCC2 0.8 Input Capacitance 0.3 x VCC2 TXD, STBY (MAX13054) VTXD = VCC, VTXD = VCC2 (MAX13054) -5 +5 VSTBY = VCC, VS = VCC (MAX13053) -5 +5 VTXD = GND -300 -100 VSTBY = GND, VS = GND (MAX13053) -10 -1 CIN 10 V A A pF CANH, CANL TRANSMITTER Recessive Bus Voltage VCANH, VCANL Normal mode, VTXD = VCC, no load Recessive Output Current ICANH, ICANL VCANH, VCANL = 76V -32V VCANH, VCANL +32V -2.5 +2.5 CANH Output Voltage VCANH VTXD = 0, dominant 3.0 4.25 V CANL Output Voltage VCANL VTXD = 0, dominant 0.50 1.75 V DOM VTXD = 0, dominant, TA = +25C, (VCANH + VCANL) - VCC -100 +150 mV Matching Between CANH and CANL Output Voltage 2 Standby mode, no load 2 3 V -100 +100 mV 3 _______________________________________________________________________________________ mA Industry-Standard High-Speed CAN Transceivers with 80V Fault Protection (VCC = +5V 5%, VCC2 = +3V to +3.6V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +5V, VCC2 = +3.3V, RL = 60, and TA = +25C.) (Note 1) PARAMETER SYMBOL Differential Output (VCANH - VCANL) VDIFF CANH Short-Circuit Current ICANHSC CANL Short-Circuit Current ICANLSC CONDITIONS MIN TYP MAX UNITS Dominant, VTXD = 0, 45 RL 60 1.5 3.0 V Recessive, VTXD = VCC, no load -50 +50 mV VCANH = 0, VTXD = 0 -100 -70 -45 mA VCANL = 5V, VTXD = 0 40 60 90 VCANL = 40V, VTXD = 0 (Note 2) 40 60 90 VCANL = 76V, VTXD = 0 mA 63 RXD OUTPUT LEVELS RXD High-Output-Voltage Level I = -100A 0.8 x VCC VCC I = -100A (MAX13054) 0.8 x VCC2 VCC2 VOH RXD Low-Output-Voltage Level VOL V I = 5mA 0.4 V 0.7 x VCC V COMMON-MODE STABILIZATION (SPLIT) and REF Output Voltage VSPLIT Leakage Current ILEAK REF Output Voltage VREF Normal mode, -500A ISPLIT 500A 0.3 x VCC Standby mode, -40V VSPLIT +40V 20 Standby mode, -76V VSPLIT +76V 50 -50A IREF +50A (MAX13053) 0.45 x VCC 0.55 x VCC A V DC BUS RECEIVER (VTXD = VCC, CANH and CANL externally driven) Differential Input Voltage Differential Input Hysteresis VDIFF 0.5 MAX13050/MAX13052/MAX13054 -12V VCM +12V (standby mode) 0.50 VDIFF(HYST) Normal mode, -12V VCM +12V Common-Mode Input Resistance Matching Between CANH and CANL Common-Mode Input Resistance -12V VCM +12V RICM Normal or standby mode, VCANH = VCANL = 12V RIC_MATCH VCANH = VCANL Differential Input Resistance Common-Mode Input Capacitance RDIFF CIM Differential Input Capacitance Input Leakage Current Normal or standby mode, VCANH - VCANL = 1V 1.15 V mV 15 35 k -3 +3 % 25 75 k VTXD = VCC VCC = 0, VCANH = VCANL = 5V 0.9 70 20 VTXD = VCC ILI 0.7 pF 10 -5 pF +5 A 0.3 x VCC V SLOPE CONTROL RS ( MAX13052) Input Voltage for High Speed VIL_RS _______________________________________________________________________________________ 3 MAX13050/MAX13052/MAX13053/MAX13054 DC ELECTRICAL CHARACTERISTICS (continued) MAX13050/MAX13052/MAX13053/MAX13054 Industry-Standard High-Speed CAN Transceivers with 80V Fault Protection DC ELECTRICAL CHARACTERISTICS (continued) (VCC = +5V 5%, VCC2 = +3V to +3.6V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +5V, VCC2 = +3.3V, RL = 60, and TA = +25C.) (Note 1) PARAMETER SYMBOL Input Voltage for Standby VIH_RS Slope-Control Mode Voltage VSLOPE High-Speed Mode Current IIL_RS CONDITIONS MIN MAX 0.75 x VCC -200A < IRS < 10A 0.4 x VCC VRS = 0 -500 IEC 61000-4-2 Contact Discharge Method per IBEE test facility (Note 3) ESD Protection TYP UNITS V 0.6 x VCC V A 8 kV TIMING CHARACTERISTICS (VCC = +5V 5%, VCC2 = +3V to +3.6V, RL = 60, CL = 100pF, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +5V, VCC2 = +3.3V, and TA = +25C.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS 66 110 ns 61 95 Delay TXD to Bus Active tONTXD Figure 1 (Note 4) Delay TXD to Bus Inactive tOFFTXD Figure 1 (Note 4) 70 110 Delay Bus to Receiver Active tONRXD Figure 1 (Note 4) 54 115 ns Delay Bus to Receiver Inactive tOFFRXD Figure 1 (Note 4) 46 160 ns Delay TXD to RXD Active (Dominant Loop Delay) tONLOOP Figure 1 (Note 4) 121 255 ns Delay TXD to RXD Inactive (Recessive Loop Delay) TOFFLOOP Figure 4 (Note 4) 108 255 ns RRS = 24k (500kbps) 280 450 ns RRS = 100k (125kbps) 0.82 1.6 RRS = 180k (62.5kbps) 1.37 5 RRS = 24k (500kbps) 386 600 RRS = 100k (125kbps) 0.74 1.6 RRS = 180k (62.5kbps) 0.97 5 RRS = 24k (500kbps) 10 RRS = 100k (125kbps) 2.7 RRS = 180k (62.5kbps) 1.6 MAX13050/MAX13052/ MAX13053 MAX13054 Delay TXD to RXD Active (Dominant Loop Delay) Slew-Rate Controlled Delay TXD to RXD Inactive (Loop Delay) Slew-Rate Controlled tONLOOP-S MAX13052 ns s tOFFLOOP-S MAX13052 ns s Differential Output Slew Rate 4 |SR| MAX13052 _______________________________________________________________________________________ V/s Industry-Standard High-Speed CAN Transceivers with 80V Fault Protection (VCC = +5V 5%, VCC2 = +3V to +3.6V, RL = 60, CL = 100pF, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +5V, VCC2 = +3.3V, and TA = +25C.) PARAMETER SYMBOL Dominant Time for Wake-Up with Bus CONDITIONS tWAKE Standby mode, VDIFF = +3V, Figure 2 Delay STBY to Normal Mode (DOMINANT) tSTBYNORM TXD = 0 (MAX13050, MAX13054) FROM STBY falling to CANH - CANL = 0.9V TXD Dominant Timeout tDOM VTXD = 0 MIN TYP MAX UNITS 0.75 1.5 3.00 s 10 s 1.0 ms 5 0.3 0.6 Note 1: All currents into the device are positive, all currents out of the device are negative. All voltages are referenced to the device ground, unless otherwise noted. Note 2: Guaranteed by design, not production tested. Note 3: MAX13050 tested by IBEE test facility. Please contact factory for report. MAX13052/MAX13053/MAX13054 are pending ESD evaluation. Note 4: For the MAX13052, VRS = 0. Timing Diagrams TXD DOMINANT 0.9V 0.5V RECESSIVE VDIFF RXD 0.7 x VCC OR 0.7 x VCC2 0.3 x VCC OR 0.3 x VCC2 tONTXD tOFFTXD tONRXD tONLOOP tOFFRXD tOFFLOOP Figure 1. Timing Diagram _______________________________________________________________________________________ 5 MAX13050/MAX13052/MAX13053/MAX13054 TIMING CHARACTERISTICS (continued) Timing Diagrams STANDBY MODE DOMINANT 0.9V VDIFF RXD tWAKE Figure 2. Timing Diagram for Standby and Wake-Up Signal Typical Operating Characteristics (VCC = +5V, RL = 60, CL = 100pF, VCC2 = +3.3V, and TA = +25C, unless otherwise noted.) SUPPLY CURRENT vs. DATA RATE 20 15 DOMINANT 30 25 TA = -40C TA = +25C 0 MAX13052 19.0 18.0 17.0 16.0 15.0 14.0 13.0 12.0 11.0 RECESSIVE 0 MAX13050 toc03 TA = +125C 20 5 15 20 40 60 80 100 120 140 160 180 200 RRS (k) 6 35 20.0 STANDBY SUPPLY CURRENT (A) 25 SUPPLY CURRENT (mA) MAX13052 10 40 MAX13050 toc01 30 STANDBY SUPPLY CURRENT vs. TEMPERATURE (RS = VCC) MAX13050 toc02 SLEW RATE vs. RRS AT 100kbps SLEW RATE (V/s) MAX13050/MAX13052/MAX13053/MAX13054 Industry-Standard High-Speed CAN Transceivers with 80V Fault Protection 10.0 0 100 200 300 400 500 600 700 800 900 1000 DATA RATE (kbps) -50 -25 0 25 50 75 TEMPERATURE (C) _______________________________________________________________________________________ 100 125 Industry-Standard High-Speed CAN Transceivers with 80V Fault Protection RECEIVER PROPAGATION DELAY vs. TEMPERATURE 7.0 6.5 6.0 5.5 5.0 4.5 60 50 RECESSIVE 40 30 20 180 160 140 120 100 60 40 0 25 50 75 100 125 RECESSIVE 20 0 0 -25 DOMINANT 80 10 -50 -50 -25 0 25 50 75 100 -50 125 -25 0 25 50 75 100 TEMPERATURE (C) TEMPERATURE (C) TEMPERATURE (C) REF VOLTAGE vs. REG OUTPUT CURRENT SPLIT LEAKAGE CURRENT vs. TEMPERATURE RECEIVER OUTPUT LOW vs. OUTPUT CURRENT 2.54 TA = +25C TA = +125C 2.52 2.50 2.48 2.46 2.44 0.1 0.01 -50 10 15 20 25 30 35 40 45 50 -25 0 25 50 75 100 0 125 5 10 15 20 TEMPERATURE (C) OUTPUT CURRENT (mA) RECEIVER OUTPUT HIGH vs. OUTPUT CURRENT RECEIVER OUTPUT HIGH vs. OUTPUT CURRENT RECEIVER OUTPUT LOW vs. OUTPUT CURRENT 200 TA = +25C 150 100 TA = -40C 50 0 1.6 TA = +25C 1.4 TA = +125C 1.2 1.0 0.8 0.6 0.4 TA = -40C 200 300 400 OUTPUT CURRENT (A) 500 600 200.0 TA = +125C TA = +25C 150.0 100.0 TA = -40C 50.0 0.2 0 100 MAX13054 VCC2 = +3.3V 250.0 VOLTAGE RXD (mV) TA = +125C MAX13050/MAX13052/MAX13053 1.8 300.0 MAX13050 toc11 250 2.0 RECEIVER OUTPUT HIGH (VCC - RXD) (V) MAX13054 0 TA = -40C REG OUTPUT CURRENT (A) MAX13050 toc10 300 5 TA = +125C 0.6 0 0.0001 0 TA = +25C 0.8 0.2 TA = -40C 2.40 1.0 0.4 0.001 2.42 MAX13050 toc09 1 LEAKAGE CURRENT (A) 2.56 MAX13050/MAX13052/MAX13053 1.2 VOLTAGE RXD (V) 2.58 125 1.4 MAX13050 toc08 10 MAX13050 toc07 2.60 REF VOLTAGE (V) DOMINANT 70 200 MAX13050 toc06 80 4.0 RECEIVER OUTPUT HIGH (VCC2 - RXD) (mV) DATA RATE = 100kbps 90 MAX13050 toc12 7.5 100 MAX13050 toc04 MAX13050 MAX13054 RECEIVER PROPAGATION DELAY (ns) MAX13050 toc04 STANDBY SUPPLY CURRENT (A) 8.0 DRIVER PROPAGATION DELAY vs. TEMPERATURE DRIVER PROPAGATION DELAY (ns) STANDBY SUPPLY CURRENT vs. TEMPERATURE (STBY = VCC) 0 0 1 2 3 4 5 6 OUTPUT CURRENT (mA) 7 8 0 1 2 3 4 5 OUTPUT CURRENT (mA) _______________________________________________________________________________________ 7 MAX13050/MAX13052/MAX13053/MAX13054 Typical Operating Characteristics (VCC = +5V, RL = 60, CL = 100pF, VCC2 = +3.3V, and TA = +25C, unless otherwise noted.) Typical Operating Characteristics (continued) (VCC = +5V, RL = 60, CL = 100pF, VCC2 = +3.3V, and TA = +25C, unless otherwise noted.) DIFFERENTIAL VOLTAGE vs. DIFFERENTIAL LOAD RECEIVER PROPAGATION DELAY MAX13050 toc13 3.0 MAX13054 WAVEFORM MAX13051 toc14 3.5 DIFFERENTIAL VOLTAGE (V) TA = -40C MAX13050 toc15 VDIFF (1V/div) TXD 2V/div TA = +125C 2.5 TA = +25C 2.0 VDIFF 2V/div 1.5 1.0 RXD (2V/div) RXD 2V/div 0.5 0 20 60 100 140 180 220 260 300 200ns/div 200ns DIFFERENTIAL LOAD RL () MAX13051 toc17 MAX13051 toc16 MAX13052 LOOPBACK PROPAGATION DELAY vs. RRS DRIVER PROPAGATION DELAY 1.4 MAX13052 TXD (5V/div) TXD (2V/div) VDIFF (2V/div) RRS = 24k VDIFF (2V/div) RRS = 75k VDIFF (1V/div) VDIFF (2V/div) RRS = 100k 1.00s MAX13051 toc18 DRIVER PROPAGATION DELAY, (RRS = 24k, 75k AND 100k) LOOPBACK PROPAGATION DELAY (s) MAX13050/MAX13052/MAX13053/MAX13054 Industry-Standard High-Speed CAN Transceivers with 80V Fault Protection 1.2 1.0 RECESSIVE 0.8 0.6 DOMINANT 0.4 0.2 0 200ns/div 0 20 40 60 80 100 120 140 160 180 200 RRS (k) 8 _______________________________________________________________________________________ Industry-Standard High-Speed CAN Transceivers with 80V Fault Protection MAX13050 MAX13052 MAX13053 MAX13054 PIN 1 1 1 1 TXD Transmit Data Input. TXD is a CMOS/TTL-compatible input from a CAN controller with a 25k pullup to VCC. For the MAX13054, TXD is pulled to VCC2. 2 2 2 2 GND Ground 3 3 3 3 VCC Supply Voltage. Bypass VCC to GND with a 0.1F capacitor. 4 4 4 4 RXD Receive Data Output. RXD is a CMOS/TTL-compatible output from the physical bus lines CANH and CANL. For the MAX13054, RXD output voltage is referenced to the VCC2 supply voltage. 5 5 -- -- SPLIT Common-Mode Stabilization Output. Output equaled to 0.5 x VCC. SPLIT goes high impedance in standby mode . 6 6 6 6 CANL CAN Bus-Line Low 7 7 7 7 CANH CAN Bus-Line High 8 -- -- 8 STBY Standby Input. Drive STBY low for high-speed operation. Drive STBY high to place the device in low-current standby mode. -- 8 -- -- RS Mode-Select Input. Drive RS low or connect to GND for high-speed operation. Connect a resistor between RS and GND to control output slope. Drive RS high to put into standby mode. -- -- 5 -- REF Reference Output Voltage. Always on reference output voltage, set to 0.5 x VCC. -- -- 8 -- S -- -- -- 5 NAME VCC2 FUNCTION Silent-Mode Input. Drive S low to enable TXD and to operate in high-speed mode. Drive S high to disable the transmitter. Logic-Supply Input. VCC2 is the logic supply voltage for the input/output between the CAN transceiver and microprocessor. VCC2 allows fully compatible +3.3V logic on all digital lines. Bypass to GND with a 0.1F capacitor. Connect VCC2 to VCC for 5V logic compatibility. Detailed Description The MAX13050/MAX13052/MAX13053/MAX13054 80V fault-protected CAN transceivers are ideal for automotive and industrial network applications where overvoltage protection is required. These devices provide a link between the CAN protocol controller and the physical wires of the bus lines in a control area network (CAN). These devices can be used for +12V and +42V battery automotive and DeviceNet applications, requiring data rates up to 1Mbps. The MAX13050/MAX13052/MAX13053/MAX13054 dominant timeout prevents the bus from being blocked by a hungup microcontroller. If the TXD input is held low for greater than 1ms, the transmitter becomes disabled, driving the bus line to a recessive state. The MAX13054 +3.3V logic input allows the device to communicate with +3.3V logic, while operating from a +5V supply. The MAX13050 and MAX13052 provide a split DC-stabilized voltage. The MAX13053 has a reference output that can be used to bias the input of a CAN controller's differential comparator. All devices can operate up to 1Mbps (high-speed mode). The MAX13052 slope-control feature allows the user to program the slew rate of the transmitter for data _______________________________________________________________________________________ 9 MAX13050/MAX13052/MAX13053/MAX13054 Pin Description MAX13050/MAX13052/MAX13053/MAX13054 Industry-Standard High-Speed CAN Transceivers with 80V Fault Protection rates of up to 500kbps. This reduces the effects of EMI, thus allowing the use of unshielded-twisted or parallel cable. The MAX13050/MAX13052 and MAX13054 standby mode shuts off the transmitter and switches the receiver to a low-current/low-speed state. The MAX13050/MAX13052/MAX13053/MAX13054 input common-mode range is greater than 12V, exceeding the ISO11898 specification of -2V to +7V, and feature 8kV Contact Discharge protection, making these devices ideal for harsh automotive and industrial environments. 80V Fault Protected The MAX13050/MAX13052/MAX13053/MAX13054 feature 80V fault protection. This extended voltage range of CANH, CANL, and SPLIT allows use in high-voltage systems and communication with high-voltage buses. Operating Modes High-Speed Mode The MAX13050/MAX13052/MAX13053/MAX13054 can achieve transmission rates of up to 1Mbps when operating in high-speed mode. Drive STBY low to operate the MAX13050 and MAX13054 in high-speed operation. Connect RS to ground to operate the MAX13052 in high-speed mode. Slope-Control Mode (MAX13052) Connect a resistor from RS to ground to select slopecontrol mode (Table 1). In slope-control mode, CANH and CANL slew rates are controlled by the resistor (16k R RS 200k) connected between RS and GND. Controlling the rise and fall slopes reduces highfrequency EMI and allows the use of an unshieldedtwisted pair or a parallel pair of wires as bus lines. The slew rate can be approximated using the formula below: SR(V / s) = 250 RRS where, SR is the desired slew rate and RRS is in k. Standby Mode (MAX13050/MAX13052/MAX13054) In standby mode (RS or STBY = high), the transmitter is switched off and the receiver is switched to a low-current/low-speed state. The supply current is reduced during standby mode. The bus line is monitored by a low-differential comparator to detect and recognize a wake-up event on the bus line. Once the comparator detects a dominant bus level greater than tWAKE, RXD pulls low. 10 Table 1. Mode Selection Truth Table MAX13052 CONDITION FORCED AT RS MODE RESULTING CURRENT AT RS VRS or 0.3 x VCC High-Speed |IRS| 500A 0.4 x VCC VRS 0.6 x VCC Slope Control 10A |IRS| 200A VRS 0.75 x VCC Standby |IRS| 10A Drive STBY high for standby mode operation for the MAX13050 and MAX13054. Apply a logic-high to RS to enter a low-current standby mode for the MAX13052. Silent Mode S (MAX13053) Drive S high to place the MAX13053 in silent mode. When operating in silent mode, the transmitter is disabled regardless of the voltage level at TXD. RXD however, still monitors activity on the bus line. Common-Mode Stabilization (SPLIT) SPLIT provides a DC common-mode stabilization voltage of 0.5 x V CC when operating in normal mode. SPLIT stabilizes the recessive voltage to 0.5 x VCC for conditions when the recessive bus voltage is lowered, caused by an unsupplied transceiver in the network with a significant leakage current from the bus lines to ground. Use SPLIT to stabilize the recessive commonmode voltage by connecting SPLIT to the center tap of the split termination, see the Typical Operating Circuit. In standby mode or when VCC = 0, SPLIT becomes high impedance. Reference Output (MAX13053) MAX13053 has a reference voltage output (REF) set to 0.5 x VCC. REF can be utilized to bias the input of a CAN controller's differential comparator, and to provide power to external circuitry. Transmitter The transmitter converts a single-ended input (TXD) from the CAN controller to differential outputs for the bus lines (CANH, CANL). The truth table for the transmitter and receiver is given in Table 2. TXD Dominant Timeout The CAN transceivers provide a transmitter dominant timeout function that prevents erroneous CAN controllers from clamping the bus to a dominant level by a continuous low TXD signal. When the TXD remains low for the 1ms maximum timeout period, the transmitter becomes disabled, thus driving the bus line to a recessive state ______________________________________________________________________________________ Industry-Standard High-Speed CAN Transceivers with 80V Fault Protection TXD RS CANH CANL BUS STATE RXD Low VRS 0.75 x VCC High Low Dominant Low High or Float VRS 0.75 x VCC VCC / 2 VCC / 2 Recessive High X VRS 0.75 x VCC RICM to GND RICM to GND Recessive High Table 3. Transmitter and Receiver Truth Table (MAX13053) TXD RS CANH CANL BUS STATE RXD Low VS < 0.8V High Low Dominant Low High or Float VS < 0.8V VCC / 2 VCC / 2 Recessive High X VS > 2V VCC / 2 VCC / 2 Recessive High (MAX13050/MAX13054) TXD STBY CANH CANL BUS STATE RXD Low VSTBY 0.8V *VSTBY 0.3 x VCC2 High Low Dominant Low High or Float VSTBY 0.8V *VSTBY 0.3 x VCC2 VCC / 2 VCC / 2 Recessive High X VSTBY 2V *VSTBY 0.7 x VCC2 RICM to GND RICM to GND Recessive High *For the MAX13054 The CANH and CANL common-mode range is greater than 12V. RXD is logic-high when CANH and CANL are shorted or terminated and undriven. tDOM TRANSMITTER ENABLED +3.3V Logic Compatibility (MAX13054) TXD VCANH - VCANL TRANSMITTER DISABLED Figure 3. Transmitter Dominant Timeout Timing Diagram (Figure 3). The transmitter becomes enabled upon detecting a rising edge at TXD. Receiver The receiver reads differential inputs from the bus lines (CANH, CANL) and transfers this data as a singleended output (RXD) to the CAN controller. It consists of a comparator that senses the difference V DIFF = (CANH - CANL) with respect to an internal threshold of 0.7V. If this difference is positive (i.e., VDIFF > 0.7), a logic-low is present at RXD. If negative (i.e., VDIFF < 0.7V), a logic-high is present. A separate input, VCC2, allows the MAX13054 to communicate with +3.3V logic systems while operating from a +5V supply. This provides a reduced input voltage threshold to the TXD and STBY inputs, and provides a logic-high output at RXD compatible with the microcontroller's system voltage. The logic compatibility eliminates longer propagation delay due to level shifting. Connect VCC2 to VCC to operate the MAX13054 with +5V logic systems. Driver Output Protection The current-limiting feature protects the transmitter output stage against a short circuit to a positive and negative battery voltage. Although the power dissipation increases during this fault condition, current-limit protection prevents destruction of the transmitter output stage. Upon removal of a short, the CAN transceiver resumes normal operation. Thermal Shutdown If the junction temperature exceeds +165C, the driver is switched off. The hysteresis is approximately 13C, ______________________________________________________________________________________ 11 MAX13050/MAX13052/MAX13053/MAX13054 Table 2. Transmitter and Receiver Truth Table (MAX13052) MAX13052 TWISTED PAIR CANH RL = 60 TXD RXD RL = 120 TRANSCEIVER 3 SPLIT RL = 60 CANL STUB LENGTH KEEP AS SHORT AS POSSIBLE TRANSCEIVER 1 TRANSCEIVER 2 Figure 4. Multiple Receivers Connected to CAN Bus disabling thermal shutdown once the temperature drops below +152C. In thermal shutdown, CANH and CANL go recessive. After a thermal-shutdown event, the IC resumes normal operation when the junction temperature drops below the thermal-shutdown hysteresis, and upon the CAN transceiver detecting a rising edge at TXD. Applications Information RC 50M to 100M CHARGE-CURRENTLIMIT RESISTOR HIGHVOLTAGE DC SOURCE Cs 150pF RD 330k DISCHARGE RESISTANCE STORAGE CAPACITOR DEVICE UNDER TEST Reduced EMI and Reflections In slope-control mode, the MAX13052's CANH and CANL outputs are slew-rate limited, minimizing EMI and reducing reflections caused by improperly terminated cables. In multidrop CAN applications, it is important to maintain a direct point-to-point wiring scheme. A single pair of wires should connect each element of the CAN bus, and the two ends of the bus should be terminated with 120 resistors, see Figure 4. A star configuration should never be used. Any deviation from the point-to-point wiring scheme creates a stub. The high-speed edge of the CAN data on a stub can create reflections back down the bus. These reflections can cause data errors by eroding the noise margin of the system. Although stubs are unavoidable in a multidrop system, care should be taken to keep these stubs as small as possible, especially in high-speed mode. In slope-control mode, the requirements are not as rigorous, but stub length should still be minimized. Layout Consideration CANH and CANL are differential signals and steps should be taken to insure equivalent parasitic capaci12 Figure 5. IEC 61000-4-2 Contact Discharge ESD Test Model I 100% 90% I PEAK MAX13050/MAX13052/MAX13053/MAX13054 Industry-Standard High-Speed CAN Transceivers with 80V Fault Protection 10% t r = 0.7ns to 1ns t 30ns 60ns Figure 6. IEC 61000-4-2 ESD Test Model Current Waveform ______________________________________________________________________________________ Industry-Standard High-Speed CAN Transceivers with 80V Fault Protection Power Supply and Bypassing The MAX13050/MAX13052/MAX13053/MAX13054 require no special layout considerations beyond common practices. Bypass VCC and VCC2 to GND with a 0.1F ceramic capacitor mounted close to the IC with short lead lengths and wide trace widths. MAX13054 continue working without latchup. ESD protection can be tested in several ways. The CANH and CANL inputs are characterized for protection to 8kV using the IEC 61000-4-2 Contact Discharge Method per IBEE Test facility. ESD Test Conditions ESD performance depends on a number of conditions. Contact Maxim for a reliability report that documents test setup, methodology, and results. ESD Protection Human Body Model ESD-protection structures are incorporated on CANH and CANL to protect against ESD encountered during handling and assembly. CANH and CANL inputs have extra protection to protect against static electricity found in normal operation. Maxim's engineers have developed state-of-the-art structures to protect these pins against 8kV ESD Contact Discharge without damage. After an ESD event, the MAX13050/MAX13052/MAX13053/ Figure 5 shows the IEC 61000-4-2 Contact Discharge Model, and Figure 6 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 device through a 1.5k resistor. ______________________________________________________________________________________ 13 MAX13050/MAX13052/MAX13053/MAX13054 tance. Place the resistor at RS as close as possible to the MAX13052 to minimize any possible noise coupling at the input. Industry-Standard High-Speed CAN Transceivers with 80V Fault Protection MAX13050/MAX13052/MAX13053/MAX13054 Functional Diagrams VCC MAX13050 R SPLIT THERMAL SHUTDOWN TXD DOMINANT TIMEOUT R DRIVER CANH CANL WAKE-UP MODE CONTROL STBY GND WAKE-UP FILTER RXD 14 MUX ______________________________________________________________________________________ Industry-Standard High-Speed CAN Transceivers with 80V Fault Protection VCC MAX13052 R SPLIT THERMAL SHUTDOWN TXD TIMEOUT AND SLOPECONTROL MODE DRIVER R CANH CANL RS WAKE-UP MODE CONTROL GND WAKE-UP FILTER RXD MUX ______________________________________________________________________________________ 15 MAX13050/MAX13052/MAX13053/MAX13054 Functional Diagrams (continued) Industry-Standard High-Speed CAN Transceivers with 80V Fault Protection MAX13050/MAX13052/MAX13053/MAX13054 Functional Diagrams (continued) VCC MAX13053 R REF R THERMAL SHUTDOWN S TXD DRIVER DOMINANT TIMEOUT CANH CANL RS WAKE-UP MODE CONTROL GND WAKE-UP FILTER RXD 16 MUX ______________________________________________________________________________________ Industry-Standard High-Speed CAN Transceivers with 80V Fault Protection VCC MAX13054 THERMAL SHUTDOWN VCC2 CANH DOMINANT TIMEOUT TXD DRIVER CANL WAKE-UP MODE CONTROL STBY GND WAKE-UP FILTER MUX VCC2 RXD DRIVER ______________________________________________________________________________________ 17 MAX13050/MAX13052/MAX13053/MAX13054 Functional Diagrams (continued) Industry-Standard High-Speed CAN Transceivers with 80V Fault Protection MAX13050/MAX13052/MAX13053/MAX13054 Typical Operating Circuits 0.1F VCC 0.1F VCC TO BUS TO BUS CAN CONTROLLER TXO MAX13050 TXD CAN CONTROLLER TXO 60 SPLIT RXD RXO CANH VCC CANH VCC MAX13052 TXD SPLIT RXD RXO 4.7nF 4.7nF 60 60 GND STBY I/O STBY I/O 60 GND GND CANL GND 0.1F VCC CANL 0.1F VCC TO BUS CAN CONTROLLER TXO RXO I/O TO BUS CANH VCC MAX13053 TXD CAN CONTROLLER TXO 60 RXD 60 18 GND CANL 60 RXD 4.7nF STBY I/O 60 +3.3V REF GND MAX13054 TXD RXO 4.7nF S CANH VCC LOGIC GND 0.1F GND CANL ______________________________________________________________________________________ Industry-Standard High-Speed CAN Transceivers with 80V Fault Protection TOP VIEW TXD 1 GND 2 8 STBY TXD 1 7 CANH GND 2 8 RS 7 CANH MAX13052 MAX13050 3 6 CANL VCC 3 6 CANL RXD 4 5 SPLIT RXD 4 5 SPLIT 8 STBY 7 CANH VCC SO TXD 1 GND 2 SO 8 S TXD 1 7 CANH GND 2 MAX13054 MAX13053 3 6 CANL VCC 3 6 CANL RXD 4 5 REF RXD 4 5 VCC2 VCC SO SO Chip . TRANSISTOR COUNT: 1400 PROCESS: BiCMOS Information ______________________________________________________________________________________ 19 MAX13050/MAX13052/MAX13053/MAX13054 Pin Configurations 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.) DIM A A1 B C e E H L N E H INCHES MILLIMETERS MAX MIN 0.069 0.053 0.010 0.004 0.014 0.019 0.007 0.010 0.050 BSC 0.150 0.157 0.228 0.244 0.016 0.050 MAX MIN 1.35 1.75 0.10 0.25 0.35 0.49 0.19 0.25 1.27 BSC 3.80 4.00 5.80 6.20 0.40 SOICN .EPS MAX13050/MAX13052/MAX13053/MAX13054 Industry-Standard High-Speed CAN Transceivers with 80V Fault Protection 1.27 VARIATIONS: 1 INCHES TOP VIEW DIM D D D MIN 0.189 0.337 0.386 MAX 0.197 0.344 0.394 MILLIMETERS MIN 4.80 8.55 9.80 MAX 5.00 8.75 10.00 N MS012 8 AA 14 AB 16 AC D A B e C 0-8 A1 L FRONT VIEW SIDE VIEW PROPRIETARY INFORMATION TITLE: PACKAGE OUTLINE, .150" SOIC APPROVAL DOCUMENT CONTROL NO. 21-0041 REV. B 1 1 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. 20 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 (c) 2005 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products, Inc.