MAX4638ESE+T

MAX4638/MAX4639 3.5Ω, Single 8:1 and Dual 4:1, Low-Voltage Analog Multiplexers General Description The MAX4638/MAX4639 are single 8:1 and dual 4:1 CMOS analog multiplexers/demultiplexers (muxes/ demuxes). Each mux operates from a single +1.8V to +5V supply or dual ±2.5V supplies. These devices feature 3.5Ω on-resistance (RON) when powered with a single +5V supply and have -75dB off-isolation and -85dB crosstalk from the output to each off channel. The switching times are 18ns tON and 7ns tOFF. They feature a -3dB 85MHz bandwidth and a guaranteed 0.25nA leakage current at +25°C. A +1.8V to +5.5V operating range makes the MAX4638/ MAX4639 ideal for battery-powered, portable instruments. All channels guarantee break-before-make switching. These parts feature bidirectional operation and can handle Rail-to-Rail® analog signals. All control inputs are TTL/CMOS-logic compatible. Decoding is in standard BCD format, and an enable input is provided to simplify cascading of devices. These devices are available in small 16-pin TQFN, TSSOP, and SO packages, as well as a 20-pin TQFN package. Applications Features ♦ Guaranteed RON 3.5Ω (+5V or ±2.5V Supplies) 6Ω (+3V Supply) ♦ Guaranteed 0.4Ω RON Match Between Channels ♦ Guaranteed 1Ω RON Flatness Over Signal Range ♦ Guaranteed Low Leakage Currents 0.25nA at +25°C ♦ Switching Times: tON = 18ns, tOFF = 7ns ♦ +1.8V to +5.5V Single-Supply Operation ±2.5V Dual-Supply Operation ♦ Rail-to-Rail Signal Handling ♦ TTL/CMOS-Logic Compatible ♦ Crosstalk: -80dB (1MHz) ♦ Off-Isolation: -60dB (10MHz) Ordering Information PART TEMP RANGE MAX4638ETE+T PIN-PACKAGE -40°C to +85°C 16 TQFN-EP* (4
4) 16 TSSOP Automatic Test Equipment MAX4638EUE+T -40°C to +85°C Low-Voltage Data-Acquisition Systems MAX4638ESE+T -40°C to +85°C 16 SO Audio and Video Signal Routing MAX4638ETP+T -40°C to +85°C 20 TQFN-EP* (4
4) Medical Equipment +Denotes a lead(Pb)-free/RoHS-compliant package. T = Tape and reel. *EP = Exposed pad. Ordering Information continued at end of data sheet. Battery-Powered Equipment Relay Replacement Pin Configurations/Functional Diagrams TOP VIEW MAX4639 MAX4638 A0 1 + + EN 2 V- 3 LOGIC 16 A1 A0 1 15 A2 EN 2 14 GND V- 3 16 A1 15 GND LOGIC 14 V+ NO1 4 13 V+ NO1A 4 13 NO1B NO2 5 12 NO5 NO2A 5 12 NO2B NO3 6 11 NO6 NO3A 6 11 NO3B NO4 7 10 NO7 NO4A 7 10 NO4B COM 8 9 NO8 COMA 8 9 TSSOP/SO COMB TSSOP/SO Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd. For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com. 19-1782; Rev 3; 10/12 MAX4638/MAX4639 3.5Ω, Single 8:1 and Dual 4:1, Low-Voltage Analog Multiplexers ABSOLUTE MAXIMUM RATINGS (Voltages Referenced to GND) V+ to V- .................................................................................+6V V+, A_, EN ................................................................-0.3V to +6V V- ............................................................................+0.3V to -6V NO_, COM_ (Note 1) ................................... -0.3V to (V+ + 0.3V) Continuous Current A_, EN ............................................. ±30mA Continuous Current NO_, COM_ .................................. ±100mA Peak Current (NO_, COM_) (pulsed at 1ms, 10% duty cycle) .............................. ±200mA Continuous Power Dissipation (TA = +70°C) TQFN (derate 16.9mW/°C above +70°C).....................1349mW TSSOP (derate 9.4mW/°C above +70°C) ....................754.7mW SO (derate 8.70mW/°C above +70°C) ...........................696mW Operating Temperature Range MAX463_E_ E ................................................-40°C to +85°C Junction Temperature ......................................................+150°C Storage Temperature Range ............................-65°C to +150°C Lead Temperature (soldering, 10s) ................................+300°C Soldering Temperature (reflow) ......................................+260°C Note 1: Signals on COM_, NO_ exceeding V+ or V- are clamped by internal diodes. A_ and EN are clamped only to V- and can exceed V+ up to their maximum ratings. Limit forward-diode current to maximum current rating. 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—+5V Single Supply (V+ = +5V ±10%, V- = 0, VIH = +2.4V, VIL = +0.8V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Notes 2, 3) PARAMETER SYMBOL CONDITIONS MIN TYP (Note 2) MAX UNITS V+ V ANALOG SWITCH Analog Signal Range VCOM_, VNO_ 0 RON V+ = +4.5V, ICOM_ = 10mA, TA = +25°C VNO_ = +3.5V TA = TMIN to TMAX 2.5 3.5 4.5 Ω ΔRON V+ = +4.5V, ICOM_ = 10mA, TA = +25°C VNO_ = +3.5V TA = TMIN to TMAX 0.1 0.4 0.5 Ω On-Resistance Flatness (Note 6) RFLAT(ON) V+ = +4.5V; ICOM_ = 10mA; TA = +25°C VNO_ = +1V, +2V, +3.5V TA = TMIN to TMAX 0.75 1 NO_ Off-Leakage Current (Note 7) INO_(OFF) V+ = +5.5V; VCOM _ = +1V, +4.5V; VNO_ = +4.5V, +1V TA = +25°C -0.25 TA = TMIN to TMAX -0.35 COM_ Off-Leakage Current (Note 7) ICOM_(OFF) V+ = +5.5V; VCOM_ = +1V, +4.5V; VNO_ = +4.5V, +1V TA = +25°C -0.25 TA = TMIN to TMAX -0.75 COM_ On-Leakage Current (Note 7) V+ = +5.5V; VCOM_ = +1V, ICOM_(ON) +4.5V; VNO_ = +1V, +4.5V, or unconnected TA = +25°C -0.25 TA = TMIN to TMAX -0.75 On-Resistance On-Resistance Match Between Channels (Notes 4, 5) 1.2 ±0.01 0.25 0.35 ±0.01 0.25 0.75 ±0.01 Ω nA nA 0.25 nA 0.75 DIGITAL I/O Input Logic High VIH Input Logic Low VIL IIH, IIL Input Leakage Current Digital Input Capacitance 2.4 VIN_ = 0 or V+ -0.1 CIN V 0.005 0.8 V 0.1 µA 2 pF DYNAMIC Transition Time (Note 7) 2 tTRANS RL = 100Ω, CL = 35pF, VNO1 = +3V or 0, VNO8 = 0 or +3V, Figure 2 TA = +25°C 14 18 ns TA = TMIN to TMAX 20 Maxim Integrated MAX4638/MAX4639 3.5Ω, Single 8:1 and Dual 4:1, Low-Voltage Analog Multiplexers (V+ = +5V ±10%, V- = 0, VIH = +2.4V, VIL = +0.8V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Notes 2, 3) PARAMETER Break-Before-Make (Note 7) Enable Turn-On Time (Note 7) Enable Turn-Off Time (Note 7) On-Channel -3dB Bandwidth Charge Injection SYMBOL CONDITIONS tBBM RL = 100Ω, CL = 35pF, VNO_ = +3V, Figure 3 tON(EN) RL = 100Ω, CL = 35pF, VNO1 = +3V, VNO2 to VNO8 = 0, Figure 4 tOFF(EN) BW Q RL = 100Ω, CL = 35pF, VNO1 = +3V, VNO2 to VNO8 = 0, Figure 4 Signal = 0dBm, CL = 5pF, 50Ω in and out, Figure 6 Total Harmonic Distortion VCT THD 14 18 ns TA = TMIN to TMAX TA = +25°C 20 5 7 ns TA = TMIN to TMAX TA = +25°C 8 50 MHz 13 pC VNO_ = 0V, f = 1MHz, Figure 8 TA = +25°C 9 pF MAX4638 TA = +25°C 40 MAX4639 TA = +25°C 20 MAX4638 TA = +25°C 54 MAX4639 TA = +25°C 34 TA = +25°C -55 VCOM_ = VNO_ = 0V, f = 1MHz, Figure 8 MAX4639 pF pF CL = 5pF, RL = 50Ω, f = 1MHz, VNO_ = 1VRMS , Figure 6 Crosstalk (Note 9) ns 1 TA = +25°C VCOM_ = 0V, CCOM_(OFF) f = 1MHz, Figure 8 VISO 8 UNITS VGEN = +2.5V, RGEN = 0, CL = 1.0nF, Figure 5 COM_ Off-Capacitance Off-Isolation (Note 8) TA = +25°C MAX 85 CNO_(OFF) C(ON) TA = +25°C TA = TMIN to TMAX TYP (Note 2) TA = +25°C NO_ Off-Capacitance Switch On-Capacitance MAX4638 MIN dB CL = 5pF, RL = 50Ω, f = 10MHz, VNO_ = 1VRMS , Figure 6 TA = +25°C -75 CL = 5pF, RL = 50Ω, f = 10MHz, VNO_= 1VRMS , Figure 7 TA = +25°C -65 CL = 5pF, RL = 50Ω, f = 1MHz, VNO_ = 1VRMS, Figure 7 TA = +25°C -85 RL = 600Ω, RFLAT(ON)/RL TA = +25°C 0.5 dB % SUPPLY Positive Supply Current Maxim Integrated I+ V+ = +5.5V, VIN = 0 or V+ 0.001 1.0 µA 3 MAX4638/MAX4639 ELECTRICAL CHARACTERISTICS—+5V Single Supply (continued) MAX4638/MAX4639 3.5Ω, Single 8:1 and Dual 4:1, Low-Voltage Analog Multiplexers ELECTRICAL CHARACTERISTICS—+3.0V Single Supply (V+ = +2.7V to +3.3V, V- = 0, VIH = +2.0V, VIL = +0.4V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at V+ = +3V and TA = +25°C.) (Notes 2, 3) PARAMETER SYMBOL CONDITIONS MIN TYP (Note 2) MAX UNITS V+ V ANALOG SWITCH Analog Signal Range On-Resistance On-Resistance Match Between Channels (Notes 4, 5) On-Resistance Flatness (Note 6) NO_ Off-Leakage Current (Note 7) VCOM_, VNO_ 0 RON ICOM_ = 10mA, VNO_ = +1.7V ΔRON ICOM_ = 10mA, VNO_ = +1.7V RFLAT(ON) INO_(OFF) ICOM_ = 10mA; VNO_ = +1.5V, +1.7V, +1.9V V+ = +3.3V; VCOM_ = +1V, +3V; VNO_ = +3V, +1V COM_ Off-Leakage Current (Note 7) V+ = +3.3V; ICOM_(OFF) VCOM_ = +1V, +3V; VNO_ = +3V, +1V COM_ On-Leakage Current (Note 7) V+ = +3.3V; VCOM_ = ICOM_(ON) +1V, +3V; VNO_ = +1V, +3V, or unconnected TA = +25°C 4.5 TA = TMIN to TMAX 6 8 TA = +25°C 0.25 TA = TMIN to TMAX 0.6 0.8 TA = +25°C 1 TA = TMIN to TMAX 2 2.5 TA = +25°C -0.25 TA = TMIN to TMAX -0.35 TA = +25°C -0.25 TA = TMIN to TMAX -0.35 TA = +25°C -0.25 TA = TMIN to TMAX -0.35 ±0.01 Ω Ω Ω 0.25 nA 0.35 ±0.01 0.25 nA 0.35 ±0.01 0.25 nA 0.35 DIGITAL I/O Input Logic High VIH Input Logic Low VIL Input Leakage Current Digital Input Capacitance IIH, IIL 2.0 VIN_ = 0 or V+ -0.1 CIN V 0.005 0.4 V 0.1 µA 2 pF DYNAMIC TA = +25°C tTRANS VNO_ = +2V, CL = 35pF, RL = 100Ω, Figure 2 tBBM VNO_ = +2V, CL = 35pF, RL = 100Ω, Figure 3 TA = TMIN to TMAX Enable Turn-On Time (Note 7) tON(EN) VNO_ = +2V, CL = 35pF, RL = 100Ω, Figure 4 TA = TMIN to TMAX Enable Turn-Off Time (Note 7) tOFF(EN) VNO_ = +2V, CL = 35pF, RL = 100Ω, Figure 4 TA = TMIN to TMAX Transition Time (Note 7) Break-Before-Make (Note 7) 4 16 TA = TMIN to TMAX 24 TA = +25°C TA = +25°C TA = +25°C 20 8 ns 1 15 20 24 5 ns 9 10 ns ns Maxim Integrated MAX4638/MAX4639 3.5Ω, Single 8:1 and Dual 4:1, Low-Voltage Analog Multiplexers ELECTRICAL CHARACTERISTICS—+3.0V Single Supply (continued) (V+ = +2.7V to +3.3V, V- = 0, VIH = +2.0V, VIL = +0.4V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at V+ = +3V and TA = +25°C.) (Notes 2, 3) PARAMETER Off-Isolation (Note 8) Crosstalk (Note 9) On-Channel -3dB Bandwidth SYMBOL VISO VCT BW CONDITIONS TA = +25°C CL = 5pF, RL = 50Ω, f = 1MHz, VNO_ = 1VRMS, Figure 6 TA = +25°C -75 CL = 5pF, RL = 50Ω, f = 10MHz, VNO_ = 1VRMS, Figure 7 TA = +25°C -65 dB -85 TA = +25°C 50 TA = +25°C 85 TA = +25°C 9 MAX4638 TA = +25°C 40 MAX4639 TA = +25°C 20 VCOM = VNO_ MAX4638 = 0V, f = 1MHz, MAX4639 Figure 8 TA = +25°C 54 TA = +25°C 34 Signal = MAX4638 0dBm, 50Ω in and out, MAX4639 Figure 6 VNO_ = 0V, f = 1MHz, Figure 8 VCOM_ = 0V, CCOM_(OFF) f = 1MHz, Figure 8 I+ UNITS 55 TA = +25°C COM_ Off-Capacitance SUPPLY Positive Supply Current MAX dB CL = 5pF, RL = 50Ω, f = 1MHz, VNO_ = 1VRMS, Figure 7 CNO_(OFF) C(ON) TYP (Note 2) CL = 5pF, RL = 50Ω, f = 10MHz, VNO_ = +1VRMS , Figure 6 NO_ Off-Capacitance Switch On-Capacitance MIN MHz pF pF pF V+ = +3.3V, VIN_ = 0 or V+ 0.001 1 µA ELECTRICAL CHARACTERISTICS—±2.5V Dual Supplies (V+ = +2.5 ±10%, V- = -2.5V ±10%, VIH = +2.0V, VIL = +0.4V, TA =TMIN to TMAX, unless otherwise noted. Typical values are at V± = ±2.5V and TA = +25°C.) (Notes 2, 3) PARAMETER SYMBOL CONDITIONS MIN TYP (Note 2) MAX UNITS V+ V ANALOG SWITCH Analog Signal Range On-Resistance On-Resistance Match Between Channels (Notes 4, 5) Maxim Integrated VCOM_, VNO_ RON
RON VICOM_ = 10mA, VNO_ = ±1.5V, TA = +25°C V+ = +2.25V, V- = -2.25V TA = TMIN to TMAX ICOM_ = 10mA, VNO_ = ±1.5V, TA = +25°C V+ = +2.25V, V- = -2.25V TA = TMIN to TMAX 2.5 3.5 4.5 0.2 0.4 0.5   5 MAX4638/MAX4639 3.5Ω, Single 8:1 and Dual 4:1, Low-Voltage Analog Multiplexers ELECTRICAL CHARACTERISTICS—±2.5V Dual Supplies (continued) (V+ = +2.5 ±10%, V- = -2.5V ±10%, VIH = +2.0V, VIL = +0.4V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at V± = ±2.5V and TA = +25°C.) (Notes 2, 3) PARAMETER SYMBOL CONDITIONS On-Resistance Flatness (Note 6) I = 10mA; VNO_ = ±1.5V, TA = +25°C RFLAT(ON) COM_ 0; V+ = +2.25V; V- = -2.25V TA = TMIN to TMAX NO_ Off-Leakage Current (Note 7) V+ = +2.75V; V- = -2.75V; INO_ (OFF) VCOM_ = +1V, +2.5V; VNO_ = +2.5V, +1V COM_ Off-Leakage Current (Note 7) V+ = +2.75V; V- = -2.75; ICOM_ (OFF) VCOM_ = +1V, +2.5V; VNO_ = +2.5V, +1V COM_ On-Leakage Current (Note 7) V+ = +2.5V; V- = -2.5; V = +1V, +2.5V; ICOM_ (ON) COM_ VNO_ = +1V, +2.5V, or unconnected MIN TYP (Note 2) MAX 0.75 1 1.2 TA = +25°C -0.25 TA = TMIN to TMAX -0.35 TA = +25°C -0.25 TA = TMIN to TMAX -0.35 TA = +25°C -0.25 TA = TMIN to TMAX -0.35 ±0.01 UNITS  0.25 nA 0.35 ±0.01 0.25 nA 0.35 ±0.01 0.25 nA 0.35 DIGITAL I/O Input Logic High VIH Input Logic Low VIL Input Leakage Current Digital Input Capacitance IIH, IIL 2.0 VIN_ = 0 or V+ -0.1 CIN V 0.005 0.4 V 0.1 μA 2 pF DYNAMIC Transition Time (Note 7) tTRANS Enable Turn-On Time (Note 7) tON(EN) Enable Turn-Off Time (Note 7) tOFF(EN) Break-Before-Make (Note 7) tBBM VNO_ = +1.2V, CL = 35pF, TA = +25°C RL = 100, Figure 2 TA = TMIN to TMAX VNO_ = +1.2V, CL = 35pF, RL = 100, Figure 4 VNO_ = +1.2V, CL = 35pF, RL = 100, Figure 4 VNO_ = +1.2V, CL = 35pF, RL = 100, Figure 3 16 20 ns 24 TA = +25°C 14 18 ns TA = TMIN to TMAX 20 TA = +25°C 5 7 ns TA = TMIN to TMAX 8 TA = +25°C 8 ns TA = TMIN to TMAX 1 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: Parts are tested at +85°C and guaranteed by design over the entire temperature range. Note 4: ΔRON = RON(MAX) - RON(MIN). Note 5: ΔRON matching specifications for TQFN packaged parts are guaranteed by design. Note 6: Flatness is defined as the difference between the maximum and minimum value of on-resistance as measured over the specified analog signal ranges. Note 7: Guaranteed by design. Note 8: Off-Isolation = 20log10 (VCOM_ / VNO_), VCOM_ = output, VNO_ = input to off switch. Note 9: Between any two switches. 6 Maxim Integrated MAX4638/MAX4639 3.5Ω, Single 8:1 and Dual 4:1, Low-Voltage Analog Multiplexers Typical Operating Characteristics (V+ = +5V, V- = 0V, TA = +25°C, unless otherwise noted.) 20 V+ = +5V 3.5 6 TA = +85°C V+ = +3V 5 TA = +85°C 10 4 2.5 2.0 TA = -40°C RON (Ω) R0N (Ω) TA = +25°C 1.5 V+ = +3V 1 0.5 0 0 0 SUPPLY CURRENT vs. SUPPLY VOLTAGE MAX4638 toc04 V+ = +5V CHARGE (pC) 14 140 120 12 10 8 6 100 3.0 1 0.1 0.01 2 60 0 0.001 -2.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 -0.5 1.5 5.5 3.5 -40 -15 10 35 60 SUPPLY VOLTAGE (V) VCOM (V) TEMPERATURE (°C) LOGIC LEVEL THRESHOLD vs. SUPPLY VOLTAGE AND TEMPERATURE ENABLE TURN-ON/TURN-OFF TIME vs. SUPPLY VOLTAGE ENABLE TURN-ON/TURN-OFF TIME vs. TEMPERATURE 1.6 40 35 TA = -40°C 1.2 tON 25 20 TA = +85°C 10 0 0 2.8 3.3 3.8 4.3 SUPPLY VOLTAGE (V) Maxim Integrated 4.8 5.3 tOFF 8 2 5 2.3 10 4 tOFF 0.8 0.6 tON 6 15 1.0 85 12 TIME (ns) TA = +25°C 1.8 14 30 TIME (ns) 1.4 16 MAX4638 toc08 45 MAX4638 toc07 1.8 LOGIC VOLTAGE (V) 2.5 10 4 80 2.0 SUPPLY CURRENT vs. TEMPERATURE 16 160 1.5 CHARGE INJECTION vs. VCOM V± = ±2.5V 18 1.0 VCOM (V) SUPPLY CURRENT (nA) 180 SUPPLY CURRENT (pA) 20 0.5 VCOM (V) VCOM (V) 200 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 MAX4638 toc05 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 MAX4638 toc06 V+ = +5V 0 TA = +25°C TA = -40°C 2 1.0 5 0 3 MAX4638 toc09 RON (Ω) 3.0 15 MAX4638 toc03 V+ = +1.8V MAX4638 toc02 4.0 MAX4638 toc01 25 ON-RESISTANCE vs. VCOM AND TEMPERATURE ON-RESISTANCE vs. VCOM AND TEMPERATURE ON-RESISTANCE vs. VCOM 1.5 2.0 2.5 3.0 3.5 4.0 4.5 SUPPLY VOLTAGE (V) 5.0 5.5 -40 -15 10 35 60 85 TEMPERATURE (°C) 7 MAX4638/MAX4639 3.5Ω, Single 8:1 and Dual 4:1, Low-Voltage Analog Multiplexers Typical Operating Characteristics (continued) (V+ = +5V, V- = 0V, TA = +25°C, unless otherwise noted.) OFF-ISOLATION -60 CROSSTALK 10 -120 1 OFF-LEAKAGE 0.06 0.04 0.1 0.02 0 0.001 0.01 0.1 1 10 100 MAX4638 toc12 ON-LEAKAGE 0.01 -100 V+ = +2.5V V- = -2.5V 5Vp-p SIGNAL 600Ω IN AND OUT 0.08 THD (%) -40 -80 100 LEAKAGE CURRENT (pA) RESPONSE (dB) ON-RESPONSE MAX4639 0.10 MAX4638 toc11 ON-RESPONSE MAX4638 -20 1000 MAX4638 toc10 0 TOTAL HARMONIC DISTORTION vs. FREQUENCY ON/OFF-LEAKAGE CURRENT vs. TEMPERATURE FREQUENCY RESPONSE 1000 -40 -20 0 FREQUENCY (MHz) 20 40 60 0.01 80 0.1 1 10 100 FREQUENCY (kHz) TEMPERATURE (°C) Pin Description PIN MAX4638 MAX4639 NAME TQFN-EP DIP/SO 8 FUNCTION TQFN-EP DIP/SO 16-PIN 20-PIN 16-PIN 20-PIN 1, 15, 16 15, 13, 14 19, 18, 17 — — — A0, A2, A1 Address Inputs — — — 1, 16 15, 14 19, 17 A0, A1 Address Inputs 2 16 1 2 16 1 EN 3 1 2 3 1 2 V- 4–7 2–5 3–6 — — — NO1–N04 — — — 4–7 2–5 3–6 NO1A–NO4A Bidirectional Analog Inputs 8 6 7 — — — COM Bidirectional Analog outputs — — — 8, 9 6, 7 7, 9 COMA, COMB Bidirectional Analog outputs 9–12 7–10 10–13 — — — NO8–NO5 Bidirectional Analog Inputs — — — 10–13 8–11 10–13 NO4B–NO1B Bidirectional Analog Inputs Enable Negative-Supply Voltage Input Bidirectional Analog Inputs 13 11 14 14 12 14 V+ 14 12 15 15 13 15 GND Ground Positive-Supply Voltage Input — — 8, 9, 16, 20 — — 8, 16, 18, 20 N.C. No Connection. Not internally connected. — — — — — — EP Exposed Pad (TQFN Only). Connect EP to V-. Maxim Integrated MAX4638/MAX4639 3.5Ω, Single 8:1 and Dual 4:1, Low-Voltage Analog Multiplexers Detailed Description The MAX4638/MAX4639 are low-voltage, CMOS analog muxes. The MAX4638 is an 8:1 mux that switches one of eight inputs (NO1–NO8) to a common output (COM) as determined by the 3-bit binary inputs A0, A1, and A2. The MAX4639 is a 4:1 dual mux that switches one of four differential inputs to a common differential output as determined by the 2-bit binary inputs A0 and A1. Both the MAX4638/MAX4639 have an EN input that can be used to enable or disable the device. When disabled, all channels are switched off. See Truth Tables. +2.5V V+ * * NO_ COM_ * * V- Applications Information D2 Overvoltage Protection Proper power-supply sequencing is recommended for all CMOS devices. Do not exceed the absolute maximum ratings because stresses beyond the listed ratings can cause permanent damage to the devices. Always sequence V+ on first, then V-, followed by the logic inputs. If power-supply sequencing is not possible, add two small-signal diodes (D1, D2) in series with the supply pins for overvoltage protection (Figure 1). Adding diodes reduces the analog signal range to one diode drop below V+ and one diode drop above V-, but MAX4638 MAX4639 D1 -2.5V * INTERNAL PROTECTION DIODES Figure 1. Overvoltage Protection Using External Blocking Diodes does not affect the devices’ low switch resistance. Device operation is unchanged, and the difference between V+ and V- should not exceed 6V. These protection diodes are not recommended when using a single supply. For single-supply operation, V- should be connected to GND as close to the device as possible. Truth Tables MAX4638 (Single 8-to-1 Mux) MAX4639 (Dual 4-to-1 Mux) A2 A1 A0 EN ON SWITCH A1 A0 EN COMA X X X 0 None X X 0 None COMB None 0 1 NO1A NO1B 0 0 0 1 NO1 0 0 0 1 1 NO2 0 1 1 NO2A NO2B 0 1 0 1 NO3 1 0 1 NO3A NO3B 1 1 1 NO4A NO4B 0 1 1 1 NO4 1 0 0 1 NO5 1 0 1 1 NO6 1 1 0 1 NO7 1 1 1 1 NO8 Maxim Integrated 9 MAX4638/MAX4639 3.5Ω, Single 8:1 and Dual 4:1, Low-Voltage Analog Multiplexers Test Circuits/Timing Diagrams V+ V+ NO1 A2 A1 A0 50Ω MAX4638 VIH VNO1 NO2–NO7 NO8 VNO8 EN COM GND VIN V- VOUT 100Ω 35pF ADDRESS INPUT VIN V- V+ A1 0V tTRANS NO1B 10% 90% SWITCH OUTPUT VOUT VNO1 NO1A–NO4A A0 50% VN01 V+ tR < 5ns tF < 5ns +3V VN08 50Ω MAX4639 VIH EN COMB V100Ω GND VIN tTRANS VNO8 NO4B VOUT 35pF V- Figure 2. Transition Time V+ VIH V+ EN A0 NO1 NO2–NO7 VNO1 ADDRESS +3V INPUT 0V VA MAX4638 VN0_ A1 VA tR < 5ns tF < 5ns 50% 90% VNO8 NO8 A2 GND COM VOUT V- 35pF 50Ω 100Ω SWITCH OUTPUT VOUT 0V tBBM V- Figure 3. MAX4638 Break-Before-Make Interval 10 Maxim Integrated MAX4638/MAX4639 3.5Ω, Single 8:1 and Dual 4:1, Low-Voltage Analog Multiplexers Test Circuits/Timing Diagrams (continued) V+ VEN V+ EN NO1 VNO1 NO2–NO8 A0 A1 MAX4638 A2 COM GND 50Ω LOGIC INPUT VEN VOUT V- 35pF 100Ω VVEN SWITCH OUTPUT VOUT V+ EN NO1B A0 50% 0V VNO1 V+ VNO1 tR < 5ns tF < 5ns +3V 90% 90% 0V NO_, COMA tON(EN) MAX4639 A1 COMB V- GND 50Ω tOFF(EN) VOUT 35pF 100Ω V- Figure 4. Enable Switching Time V+ RS V+ NO_ VEN VS CHANNEL SELECT LOGIC INPUT VEN EN A0 A1 MAX4638 MAX4639 COM +3V OFF ON OFF ON ON OFF 0V VOUT A2 GND V- CL 1nF ΔVOUT VOUT ΔVOUT IS THE MEASURED VOLTAGE DUE TO CHARGE TRANSFER ERROR Q WHEN THE CHANNEL TURNS OFF. VQ = ΔVOUT ✕ CL Figure 5. Charge Injection Maxim Integrated 11 MAX4638/MAX4639 3.5Ω, Single 8:1 and Dual 4:1, Low-Voltage Analog Multiplexers Test Circuits/Timing Diagrams (continued) V+ VIN RS = 50Ω NO1 V+ 1μF NO8 A0 R 50Ω MAX4638 MAX4639 COM A1 A2 GND EN V+ NO1 V+ V- RL 50Ω NO2 VIN NO8 A0 VOUT RG = 50Ω A1 CL 5pF A2 VOUT MAX4638 COM MAX4639 GND EN V- RL 50Ω 1μF V- VVEN 1μF OFF-ISOLATION = 20log VOUT VEN VIN CROSSTALK = 20log CL 5pF VOUT VIN Figure 7. Crosstalk Figure 6. Off-Isolation/On-Channel Bandwidth V+ V+ A2 CHANNEL SELECT A1 NO1 MAX4638 MAX4639 NO8 A0 GND EN VEN V- 1MHz CAPACITANCE ANALYZER COM f = 1MHz V- Figure 8. Channel Off/On-Capacitance 12 Maxim Integrated MAX4638/MAX4639 3.5Ω, Single 8:1 and Dual 4:1, Low-Voltage Analog Multiplexers 2 11 NO2 3 NO3 4 8 NO7 EN A0 A1 GND 14 13 V+ NO1A 2 11 NO1B 10 NO5 NO2A 3 10 NO2B 9 NO6 NO3A 4 9 NO3B TQFN MAX4639 EP* TQFN N.C. A1 N.C. 18 17 16 N.C. 16 A0 A2 17 19 A1 18 N.C. A0 19 + 20 N.C. *CONNECT EP TO V- 20 + 15 V+ 5 7 NO8 12 NO4A 6 COM NO4 5 EP* 1 8 NO1 MAX4638 V- NO4B GND 7 12 COMB 1 16 A2 13 V- 6 A1 14 + COMA A0 15 + EN TOP VIEW 16 Pin Configurations (continued) EN 1 15 GND EN 1 15 GND V- 2 14 V+ V- 2 14 V+ NO1 3 13 NO5 NO1A 3 13 NO1B NO2 4 12 NO6 NO2A 4 12 NO2B NO3 5 11 NO7 NO3A 5 11 NO3B 9 10 COMB NO4B 8 10 NO8 N.C. 9 N.C. 7 8 N.C. COMA 7 COM TQFN EP* 6 6 NO4 EP* MAX4639 NO4A MAX4638 TQFN *CONNECT EP TO V- Package Information Ordering Information (continued) PART TEMP RANGE PIN-PACKAGE -40°C to +85°C 16 TQFN-EP* (4
4) MAX4639EUE+T -40°C to +85°C 16 TSSOP MAX4639ESE+T -40°C to +85°C 16 SO MAX4639ETP+T -40°C to +85°C 20 TQFN-EP* (4
4) MAX4639ETE+T +Denotes a lead(Pb)-free/RoHS-compliant package. T = Tape and reel. *EP = Exposed pad. Chip Information For the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. PACKAGE TYPE PACKAGE CODE OUTLINE NO. LAND PATTERN NO. 16 TQFN 20 TQFN 16 TSSOP 16 SO T1644+4 T1644+3 U16+2 S16+3 21-0139 21-0139 21-0066 21-0041 90-0070 90-0069 90-0117 90-0097 PROCESS: BiCMOS Maxim Integrated 13 MAX4638/MAX4639 3.5Ω, Single 8:1 and Dual 4:1,Z Low-Voltage Analog Multiplexers Revision History REVISION NUMBER REVISION DATE 2 9/10 — 3 10/12 Added RoHS ordering information throughout data sheet DESCRIPTION PAGES CHANGED — 1–16 Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and max limits) shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance. 14 ________________________________Maxim Integrated 160 Rio Robles, San Jose, CA 95134 USA 1-408-601-1000 © 2012 Maxim Integrated Products, Inc. Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc.