19-0271; Rev O; 7/94 MAAKLAA Precision, 8-Channel/Dual 4-Channel, High-Performance, CMOS Analog Multiplexers General Description The MAX308/MAX309 precision, monolithic, CMOS ana- log multiplexers (muxes) offer low on-resistance (iess than 100Q), which is matched to within 5Q between channels and remains flat over the specified analog sig- nal range (72 max). They also offer low leakage over temperature (NO-off leakage current less than 5nA at +85C) and fast switching speeds (transition time less than 250ns). The MAX308 is a single-ended 1-of-8 device, and the MAX309 is a differential 2-of-4 device. The MAX308/MAX309 are fabricated with Maxim's improved 44V silicon-gate process. Design improve- ments yield extremely low charge injection (less than tOpC) and guarantee electrostatic discharge protection greater than 2000V. These muxes operate with a single +4.5V to +30V sup- ply or bipolar +4.5V to +20V supplies, while retaining TTLICMOS-logic input compatibility and fast switching. CMOS inputs provide reduced input loading. These improved parts are plug-in upgrades for the industry- standard DG408, DG409, DG508A, and DGSO9A. Applications Sample-and-Hold Circuits Automatic Test Equipment Heads-Up Displays Guidance and Control Systems Military Radios Communications Systems Battery-Operated Systems PBX, PABX Audio Signal Routing Features Guaranteed On-Resistance Match Between Channels, <5Q Max Low On-Resistance, <100Q Max Guaranteed Flat On-Resistance over Specified Signal Range, 70 Max Guarateed Low Charge Injection, <10pC NO-Off Leakage Current <5nA at +85C CON-Off Leakage Current <20nA at +85C ESD Protection >2000V Plugin Upgrade for Industry-Standard DG408/DG409/DG508A/DG509A Single-Supply Operation (+4.5V to +30V) Bipolar-Supply Operation (+4.5V to +20V) eft oe o Sd 60EXVW/SOEXVN @ Low Power Consumption, <300LW # Rail-to-Rail Signal Handling TTL/CMOS-Logic Compatible Ordering Information a PART TEMP. RANGE PIN-PACKAGE MAX308CPE 0C to +70C 16 Plastic DIP MAX308CSE OC to +70C 16 Narrow SO MAX308C/D OC to +70C Dice* MAX308EPE -40C to +85C 16 Plastic DIP MAX308ESE -40C to +85C 16 Narrow SO MAX308EJE -40C to +85C 16 CERDIP MAX308MJE -55C to +125C 16 CERDIP** Ordering Information continued at end of data sheet. * Contact factory for dice specifications. ** Contact factory for availability. Pin Configurations/Functional Diagrams/Truth Tables TOP VIEW 40 [1] 6] At EN [2 | 5] A2 [31 Anaxian [14] 580 noi [4] = MAX308 fig] ve noe [5 | Hi2] NOS nos [6 | Hi] Nos no4 [7] Ho] NO7 com [a | 9} NOB DIP/SO Continued at end of data sheet. V+ V- GND NOt NOB NO4 NOS NOG NO? NOB com 1 CMOS DECODE LOGIC A2 Al AO EN MAX308 8-CHANNEL SINGLE-ENDED MULTIPLEXER MAXIIA Maxim Integrated Products 1-29 Call toll free 1-800-998-8800 for free samples or literature.MAX308/MAX309 Precision, 8-Channel/Dual 4-Channel, High-Performance, CMOS Analog Multiplexers ABSOLUTE MAXIMUM RATINGS Voltage Referenced to V- Continuous Power Dissipation (Ta = +70C) Plastic DIP (derate 10.59mW/C above +70C) ... we . Narrow SO (derate 8.70mMW/C above +70C) . . 696mMW Digital Inputs, NO, COM (Note 1)........... (V- - 2V) to (V+ + 2V) or CERDIP (derate 10.00mW/C above +70C) 0.0... 800mW 30mA, (whichever occurs first) Operating Temperature Ranges Continuous Current (any terminal) 000... cece etree 30mA LY, C 6 OC to +70C Peak Current, NO or COM MAX30_E. ..-40C to +85C (pulsed at ms, 10% duty cycle Max) ...... ee 100mA MAX30_MJE ........0. -55C to +125C Storage Temperature Range............ -65C to +150C Lead Temperature (soldering, 10SC) ............ circ +300C Note 1: Signals on NO, COM, EN, AQ, A1, or A2 exceeding V+ or V- are clamped by internal diodes. Limit forward current to maximum current ratings. 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 beyand 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 CHARACTERISTICSDual Supplies (V+ = +15V, V- = -15V, GND = OV, VaH = +2.4V, VAL = +0.8V, Ta = TMIN to Tmax, unless otherwise noted.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX | UNITS (Note 2) SWITCH . VNO, N | 1 Vv Analog Signal Range Voom (Note 3) 5 5 . INO = -1.0mA, Ta = +28C 60 100 On-Resistance R Q ON Voom = +10V Ta = TMIN to TMAX 125 On-Resistance Matching AR INO = -1.0mA, Ta = +25C 1.5 5 Q Between Channels ON | Voom = 10V (Note 4) Ta = TMIN to TMAX . INO = -1.0mA, TA = +25C 1.8 7 On-Resistance Flatness R Q FLAT | Voom = +5V or OV Ta = TMIN to TMAX 10 Ta = +25C -0.5 0.01 0.5 . Vcom = 10V, A Nees) 9 Current | iNocorr) | VNo = #10V, Ta=Tun | GE 25 25 nA Ven = OV toTmax [M 5.0 5.0 VNo = 10V Ta = +25C 0.75 0.02 0.75 yCOM ne MAX308 Ta = TMIN C,E -10 10 COM-Off Leakage Current EN = to Tmax M -20 20 A Note 5) ICOM(OFF) 5 - n (Note VNo = 10V Ta = +26C 0.75 0.02 0.75 Voom = +10V, | MAX309. Ta = TMIN CLE 5 5 VEN = OV to Tmax M ~10 10 TA = +25C 0.75 0.02 0.75 Vcom =+10V,| MAX308| Ta = Twin | CE 10 10 COM-On Leakage Current ICOMON socuenc tO. to TMax M -20 20 nA (Note 5) | each switch Ta = +25C 075. 002 075 on MAX309| Ta = Tain | CE 5 5 to TMax M -10 10 1-30 MAXIMELECTRICAL CHARACTERISTICSDual Supplies (continued) Precision, 8-Channel/Dual 4-Channel, High-Performance, CMOS Analog Multiplexers (V+ = +15V, V- = -15V, GND = OV, VaH = +2.4V, Va_ = +0.8V, Ta = TMIN to TMax, unless otherwise noted.) PARAMETER SYMBOL CONDITIONS MIN Typ MAX | unrrs (Note 2) INPUT Input Current with _ Input Voltage High AH Va = 2.4V or 15V -1.0 1.0 pA Input Current with VEN = OV or 2.4V, Input Voltage Low tAL Va=0V 1.0 10 SUPPLY Power-Supply Range +45 +20 Vv Ta = +25 16 30 VEN =Va=OVor4sv [LA= *25C yA Positive Supply Current I+ Ta = TMIN to TMAX ws pPly VEN = 2.4V, Ta = +25C 007s 05 | VA(ALL) = OV or 2.4V Ta = TMIN to TMAX VEN = 2.4V, Ta = +25C 1 1 Negative Supply Current | VA(ALL) = OV or 2,4V Taz Twinto TuAx 10 10 pA DYNAMIC a . . Ta = +26C 85 175 Fi Transistion Time TRANS | Figure 2 Ta = Tun to TMax 250 ns Break-Before-Make Interval tOPEN Figure 4 Ta = +25C 10 40 ns TaA= 85 150 Enable Turn-On Time toN(EN) | Figure 3 7 sn TwaX 25 | OS Enable Turn-Off Time tOFF(EN) | Figure 3 Ta = +26C 150 ns i Ct = 1.0nF, Ta = TMIN to TMAX 300 Charge injection Q VNo = OV , (Note 3) Rs = 00 Figure 5 Ta = +25C 2 10 pc : VEN = OV, Note viso. | RL= 1k, Ta = +25C -75 dB f= 100kHz, Figure 6 VEN = 2.4V, Crosstalk Between Channels| Vcr Vee tye . Ta = +25C 92 dB Ri = 1k&, Figure 7 Logic Input Capacitance CIN f = IMHz Ta = +25C 8 pF = 1MHz, NO-Off Capacitance CNO(OFF) | VEN = VNO = OV, Ta = +25C 3 pF Figure 8 ve ae, | MAX308 26 COM-Off Capacitance CcOM(OFF) Voom =0V Ta = +26C pF Figure 8 MAX309 14 van oz, | MAXa08 37 COM-On Capacitance CcomM(ON) Voom ov Ta = +25C pF Figure 8 MAX309 25 FAAXIMMA 1-31 a 6GOEXVW/S0EXUNMAX308/MAX309 Precision, 8-Channel/Dual 4-Channel, High-Performance, CMOS Analog Multiplexers ELECTRICAL CHARACTERISTICSSingle Supply (V+ = +12V, V- = OV, GND = OV, VaH = +2.4V, Vat = +0.8V, Ta = TMIN to Tax, unless otherwise noted.) PARAMETER SYMBOL CONDITIONS MIN TYP =-MAX UNITS (Note 2) SWITCH . VNO. Anal Ri N 0 12 Vv nalog Signal Range Vcom (Note 3) . INO = -1.0mA _ On-Resistance Ron Voom = 3V or 10V Ta = +25C 120 175 Q DYNAMIC VNo1 = 8V, Transition Time VNos = OV, = 40K (Note 3) {TRANS Vin = 2.4V, Ta = +28C 115 450 ns Figure 2 VINH = 2.4V, Enable Turn-On Time VINE = OV, _ (Note 3) tON(EN) VNot = 5V, Ta = +25C 100 600 ns Figure 3 VINH = 2.4V, Enable Turn-Off Time VINL = OV, _ (Note 3) tOFF(EN) VNot = BY, Ta = +25C 75 300 ns Figure 3 vo. CL = 1.0nF, wae Q VNo = OV, Ta = +25C 2 10 pc Rs = 00 Note 2: The algebraic convention where the most negative value is a minimum and the most positive value a maximum is used in this data sheet. Note 3: Guaranteed by design. Note 4: ARON = RON(MAX) - RON(MIN). On-resistance match between channels and flatness are guaranteed only with specified voltages. Flatness is defined as the difference between the maximum and minimum value of on-resistance as measured at the extremes of the specified analog signal range. Note 5: Leakage parameters are 100% tested at the maximum rated hot temperature and guaranteed by correlation at +25C. Note 6: Off isolation = 20log Vcom/VNo, where Vcom = output and VNo = input to off switch. 1-32 MAXLAAPrecision, 8-Channel/Dual 4-Channel, High-Performance, CMOS Analog Multiplexers Typical Operating Characteristics (Ta = +25C, unless otherwise noted.) ON-RESISTANCE vs. Voom ON-RESISTANCE vs. Voom AND ON-RESISTANCE vs. Voom (DUAL SUPPLIES) TEMPERATURE (DUAL SUPPLIES) (SINGLE SUPPLY) Vt =415V V- = -15V Ron (Q) Ron (Q) Ron (82) 60EXVW/SOEXUN -20 -15 -10 5 0 5 10 15 20 0 5 10 15 20 Voom {V} Vom (V) Vom () ON-RESISTANCE ys. Voom AND TEMPERATURE (SINGLE SUPPLY) OFF LEAKAGE vs. TEMPERATURE ON LEAKAGE vs. TEMPERATURE 160 1000 1000 V+ = 15V Vee Ve=1 140 FY-=0V too [-V-=-15V 100 [-V- = -15V +125C. 120 z 10 gz 10 100 = = 3 1 3 1 2 80 e 0.1 com a os 60 te z oa o 40 0.01 0.01 Ino (OFF) 20 0.001 0.001 = 0 0.0001 0.0001 = 0 5 10 15 -5 -35 -15 5 25 45 65 85 105 125 -5 -35 -15 5 25 45 65 85 105 125 Veam (Vv) TEMPERATURE (C) TEMPERATURE (C) CHARGE INJECTION vs. Voom SUPPLY CURRENT vs. TEMPERATURE V+=+15V V- = -15V It, I+ (HA) Qi (pC) =t V- = -15V = Va= OV, 4.5V 0.001 15 4100-5 0 110 15 -55 -35 -15 65 25 45 65 85 105 125 Vcom (V} TEMPERATURE (C) MAAXLAA 1-33MAX308/MAX309 Precision, 8-Channel/Dual 4-Channel, High-Performance, CMOS Analog Multiplexers Pin Description MAX308 PIN MAX300 NAME FUNCTION 1, 15, 16 AO, A2, Ai Address Inputs _ 1, 16 AO, At Address Inputs 2 EN Enable input 3 V- Negative Supply Voltage Input 47 _ NO1-NO4 Analog Inputsbidirectional _ 47 NO1A-NO4A Analog Inputsbidirectional 8 COM Analog Outputbidirectional _ 8,9 COMA, COMB Analog Outputsbidirectional 912 _ NO8-NO5 Analog Inputsbidirectional _ 10-13 NO4B-NO1B Analog Inputsbidirectional 13 14 V+ Positive Supply Voltage Input 14 15 GND Ground Applications Information Operation with Supply Voltages Other than 15V Using supply voltages less than +15V will reduce the analog signal range. The MAX308/MAX309 switches operate with +4.5V to +20V bipolar supplies or with a +4.5V to +30V single supply. Connect V- to GND when operating with a single supply. Both device types can also operate with unbalanced supplies, such as +24V and -5V. The Typical Operating Characteristics graphs show typical on-resistance with 20V, 15V, 10V, and 5V supplies. (Switching times increase by a factor of two or more for operation at 5V.) Overvolitage Protection Proper power-supply sequencing is recommended for all CMOS devices. Do not exceed the absolute maxi- mum ratings, because stresses beyond the listed rat- ings may cause permanent damage to the devices. Always sequence V+ on first, then V-, followed by the lagic inputs, NO, or COM. If power-supply sequencing is not possible, add two small signal diodes in series with supply pins for overvoltage protection (Figure 1). Adding diodes reduces the analog signal range to 1V below V+ and 1V above V-, but does not affect the devices low switch resistance and low leakage charac- teristics. Device operation is unchanged, and the differ- ence between V+ and V- should not exceed +44V. 1-34 NO COM Figure 1. Overvoltage Protection Using External Blocking Diodes MAAXILSIAPrecision, 8-Channel/Dual 4-Channel, High-Performance, CMOS Analog Multiplexers Test Circuits/Timing Diagrams +15V | Ve A2 NOt #10V = Al NO2-NO7 I AD ANAXLAA = MAX308 N08 - 10v tre20ns LOGIC 43V EN COM Vout INPUT | ty< 20ns GND V- ASF ov 0Q 3000 TL ~~ = = ytsy OY => = Vwot | SWITCH V4 OUTPUT ot" NO1B +10V Vout ov = AO NOTA-NO4A Fp Vwos MAXIM = NO4B -} = FN MAX309 come wiv "TRANS {TRANS Vj GND ve out 502 L | 3002 35pF 1 as -15 Figure 2. Transition Time +15V ! V+ EN NOI F- -5V NO2-NO8 F--2__ AD AAAXLAA = At MAX308 AQ COM Vour tr <20ns Logic = +8V ty< 20ns 50a oe _ 26pF INPUT T : i = -15V Ls tONtEN) te loFE(EN} +15V ov 10% 1 SWITCH EN * NO1BP_ sy OUTPUT NO1A-NO4A NO2B-NO4B, PL 90% A0 COMA, Vout AMAAXIAA M MAX309 COMB Vout 502 GND V- L | tk T => = = = -168V = Figure 3. Enable Switching Time PAAXISA 6OEXVW/8O0EXVW 1-35MAX308/MAX309 Precision, 8-Channel/Dual 4-Channel, High-Performance, CMOS Analog Multiplexers Test Circuits/Timing Diagrams (continued) +15V +2.4V EN Ve tr< 20ns Locic +#8V 50% ty <20ns 4 INPUT NO1-NO8 45V ov AO MAAXLAA Al out MAX308 BO ne SWITCH COM Vout OUTPUT GND Ve Spr topen 500 i | 30022 ov <_ = -15V = Figure 4. Break-Before-Make interval +15V Rs NO V+ 4aV LOGIC EN INPUT OFF ON OFF Vg A0 com ov ect < Al AA ALAA Your Tao - MAx308 ~ CL = 1000nF \ / \ fv = GND v I our AVout !S THE MEASURED VOLTAGE DUE TO CHARGE TRANSFER ERROR Q WHEN THE CHANNEL TURNS OFF: Q=C;, = AVout Figure 5. Charge Injection MAAXLMPrecision, 8-Channel!/Dual 4-Channel, High-Performance, CMOS Analog Multiplexers Test Circuits/Timing Diagrams (continued) 60EXVIN/S0EXVN Figure 8. NO/COM Capacitance MAXUM y +15V10nF +15 10nF Vin i = Vw Prot Ve NOI V+ ; NY MAXIM Rg = 500 | b J nos | Nog MAX308 maaan Vour COM Al Rs = 500 Ey) Vout MAX308 rv) RL = 1kQ = A = = = RL = 1kQ = A2 GND EN Vv = GND EN v- = + iL tOnF 18V 10nF by Vv OFF ISOLATION = 20log Vour VIN CROSSTALK = 20109 -- Vin Figure 6. Off Isolation Figure 7. Crosstalk +15V V+ _ | NOt F-o MNAXLM : Meter CHANNEL i SELECT 4 ] At MAX308 og hoe-o-|_ | mpedance Analyzer 4 Ae Lt | or Equivalent COMf-o = GND EN V. f= 1MHz 1-37MAX308/MAX309 Precision, 8-Channel/Dual 4-Channel, High-Performance, CMOS Analog Multiplexers Pin Configurations/Functional Diagrams/Truth Tables (continued) LOGIC "0" Va_ < 0.8V, LOGIC 1 Van 2 2.4V LOGIC 0 Vat < 0.8V, LOGIC 1 Vay 2 2.4V TOP VIEW vs 7 om NOTA 0 40 [4] he] At NO2A coma EN [2 | Hs] GNo NO3A La Anaxim [1] NO4A NOIA Ora [4] = MAX309 ~ fig] Note Nore ! noza [5 | 2] NO2B No2B wos [6 it] Nose COMB No3B Noda [7 | Ho} No4e COMA [a | | come NO4B DIP/SO CMOS DECODE Logic A AO EN MAX309 4-CHANNEL DIFFERENTIAL MULTIPLEXER ON a2 | ar | ao] en | ON, ON x x x | 0 | ie At] Ao | EN |owrtey o}o}i1 | 2 x | x | o | None ee et 3 o}o] 4 1 o;1]afa] 4 1}o}foft] 5 oj} 4 |4 2 1 }o]ai1 6 sto 3 rea dey 7 1 fa 4 4 ttt pa fa 8 MAX308 MAX309 1-38 MAAXLAA_Ordering information (continued) Precision, 8-Channel/Dual 4-Channel, High-Performance, CMOS Analog Multiplexers PART TEMP. RANGE PIN-PACKAGE MAX309CPE 0C to +70C 16 Plastic DIP MAX309CSE OC to +70C 16 Narrow SO MAX309C/D 0C to +70C Dice* MAX309EPE -40C to +85C 16 Plastic DIP MAX309ESE -40C to +85C 16 Narrow SO MAX309EJE -40C to +85C 16 CERDIP MAX309MJE -55C to +125C 16 CERDIP** * Contact factory for dice specifications. ** Contact factory for availability. MNAAXIIMM 1-39 60EXVIN/SOEXVINPrecision, 8-Channel/Dual 4-Channel, High-Performance, CMOS Analog Multiplexers Chip Topographies MAX308 MAX309 EN AQ Al A2 GND EN AQ Ail N.C. GND MAX308/MAX309 N.C. V- V+ NO1 NO1B No2 NO2B 0.136 (3.45mm) N03 NO3B y 86S NO4A COMA COMB NO4B 0.080" 0.080" (2.03mm) (2.03mm) N.C. = NO INTERNAL CONNECTION TRANSISTOR COUNT: 122 TRANSISTOR COUNT: 122 SUBSTRATE CONNECTED TO V+ SUBSTRATE CONNECTED TO V+ 1-40 MAXIMA