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19-1708; Rev 2; 5/02
3V/5V, 4, Wideband Quad 2:1 Analog Multiplexer
General Description
The MAX4674 is a low-voltage CMOS analog switch containing four 2:1 multiplexers/demultiplexer. When powered from a single +5V supply, it features a low 4 max on-resistance (RON), 0.4 max RON matching between channels, and 0.8 RON flatness over the entire signal range. Off-leakage current is only 0.5nA max at +25C. The MAX4674 features fast turn-on (tON) and turn-off (tOFF) times of 18ns and 6ns, respectively, and is available in QFN, QSOP, TSSOP, and SO packages. This low-voltage multiplexer operates with a +1.8V to +5.5V single supply. All digital inputs have +0.8V and +2.4V logic thresholds, ensuring TTL/CMOS-logic compatibility with +5V operation. o Guaranteed On-Resistance 4 max (+5V Supply) 6 max (+3V Supply) o Guaranteed Match Between Channels 0.4 max o Guaranteed Flatness Over Signal Range 0.8 max o 1.8V Operation RON = 100 typ Over Temperature tON = 51ns typ tOFF = 13ns typ o Guaranteed Low Leakage Currents 0.5nA max at +25C o Single-Supply Operation from +1.8V to +5.5V o Rail-to-Rail(R) Signal Handling o TTL/CMOS-Logic Compatible o Crosstalk: -114dB (1MHz) o Off-Isolation: -67dB (1MHz) o 4mm 4mm QFN Package
Features
MAX4674
________________________Applications
10/100 Base-T ATM Switching Audio and Video Signal Routing Low-Voltage Data-Acquisition Systems Communications Circuits Relay Replacement
Ordering Information
PART MAX4674EEE MAX4674EUE MAX4674ESE MAX4674EGE MAX4674EGP TEMP RANGE -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C PIN-PACKAGE 16 QSOP 16 TSSOP 16 Narrow SO 16 QFN 20 QFN
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
Pin Configuration/Functional Diagram/Truth Table
TOP VIEW
A0 1 NC1 2 NO1 3 COM1 4 NC2 5 NO2 6 COM2 7 GND 8
MAX4674
16 V+ 15 EN 14 NC4 13 NO4 12 COM4 11 NC3 10 NO3 9 COM3 0 1 EN 1 0 A0 X 0 ON SWITCH NONE COM1-NC1 COM2-NC2 COM3-NC3 COM4-NC4 COM1-NO1 COM2-NO2 COM3-NO3 COM4-NO4 NO1 1
NC1 16
A0 15
V+ 14 CONTROL LOGIC
EN 13 12 NC4 1
AO 20
N.C. 19
V+ 18 CONTROL LOGIC
N.C. 17
EN 16 15 NC4
CONTROL LOGIC
NC1
COM1
2
11
NO4
NO1
2
14
NO4
NC2
3
MAX4674
10
COM4
COM1
3
13
COM4
MAX4674
NO2 4 5 COM2 6 GND 7 COM3 8 NO3 6 COM2 7 N.C. 8 GND 9 N.C. 10 COM3 9 NC3 NC2 4 12 NC3
QSOP/TSSOP/SO
NO2
5
11
NO3
QFN
QFN
________________________________________________________________ Maxim Integrated Products
1
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3V/5V, 4, Wideband Quad 2:1 Analog Multiplexer MAX4674
ABSOLUTE MAXIMUM RATINGS
V+, A0, EN................................................................-0.3V to +6V COM_, NO_, NC_ (Note1)...............................-0.3V to (V + 0.3V) Continuous Current COM_, NO_, NC_ ..........................100mA Peak Current (COM_, NO_, NC_) (pulsed at 1ms, 10% duty cycle) ..............................300mA Continuous Power Dissipation (TA = +70C) 16-Pin QSOP (derate 8.3mW/C above +70C) ........ 667mW 16-Pin TSSOP (derate 6.7mW/C above +70C) .......533mW 16-Pin Narrow SO (derate 8mW/C above +70C) ....640mW 16-Pin QFN (derate 18.5mW/C above +70C) ........1481mW 20-Pin QFN (derate 20mW/C above +70C) ...........1600mW Operating Temperature Range MAX4674E_E .................................................-40C to +85C Die Temperature ..............................................................+150C Storage Temperature Range ............................-65C to +150C Lead Temperature (soldering, 10s) ................................+300C
Note 1: Signals on NO_, NC_, and COM_ exceeding V+ or GND are clamped by internal diodes. 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--Single +5V Supply
(V+ = +4.5V to +5.5V, VIH = 2.4V, VIL = 0.8V, TA = TMIN to TMAX, unless otherwise noted. Typical values at TA = +25C.) (Notes 2, 9)
PARAMETER ANALOG SWITCH Analog Signal Range On-Resistance VCOM_,VNO_, VNC_ RON V+ = 4.5V, ICOM_ = 10mA, VNO_ or VNC_ = 0 to V+ V+ = 4.5V, ICOM_ = 10mA, VNO_ or VNC_ = 0 to V+ V+ = 4.5V, ICOM_ = 10mA, VNO_ or VNC_ = 0 to V+ V+ = 5.5V; VCOM_ = 1V, 4.5V; VNO_ or VNC_ = 4.5V, 1V V+ = 5.5V; VCOM_ = 1V, 4.5V; VNO_ or VNC_ = 4.5V, 1V V+ = 5.5V; VCOM_ = 1V, 4.5V; VNO_ or VNC_ = 1, 4.5V, or floating TA = +25C TA = TMIN to TMAX TA = +25C TA = TMIN to TMAX TA = +25C TA = TMIN to TMAX TA = +25C TA = TMIN to TMAX TA = +25C TA = TMIN to TMAX TA = +25C TA = TMIN to TMAX 0.5 -1 0.5 -1 0.5 -1 0.01 0.01 0.01 0.5 0.15 0 2.2 V+ 4 5 0.4 0.5 0.8 1 0.5 1 0.5 1 0.5 1 nA nA nA V SYMBOL CONDITIONS MIN TYP MAX UNITS
On-Resistance Match Between Channels (Notes 3, 8)
RON
On-Resistance Flatness (Note 4)
RFLAT (ON)
NO_, NC_ Off-Leakage Current (Note 5)
INO_(OFF), INC_(OFF)
COM_ Off-Leakage Current (Note 5)
ICOM_(OFF)
COM_ On-Leakage Current (Note 5) DIGITAL I/O (A0, EN) Input Logic High Input Logic Low Input Leakage Current DYNAMIC Turn-On Time (Note 5)
ICOM_(ON)
VIH VIL IIN VIN = 0 or +5.5V TA = +25C TA = TMIN to TMAX
2.4 0.8 -0.5 1 10 0.5 18 20
V V A
tON
VNO_ or VNC_ = 3V, RL = 100, CL = 35pF, Figure 2
ns
2
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3V/5V, 4, Wideband Quad 2:1 Analog Multiplexer
ELECTRICAL CHARACTERISTICS--Single +5V Supply (continued)
(V+ = +4.5V to +5.5V, VIH = 2.4V, VIL = 0.8V, TA = TMIN to TMAX, unless otherwise noted. Typical values at TA = +25C.) (Notes 2, 9)
PARAMETER Turn-Off Time (Note 5) SYMBOL tOFF CONDITIONS VNO_ or VNC_ = 3V, RL = 100, CL = 35pF, Figure 2 VNO_ or VNC_ = 3V, RL = 100, CL = 35pF, Figure 3 TA = +25C TA = TMIN to TMAX TA = +25C TA = TMIN to TMAX 1 10 -47 -67 -68 -114 0.015 10 20 30 5 ns pC dB MIN TYP 4 MAX 6 8 ns UNITS
MAX4674
Break-Before-Make (Note 5) Charge Injection Off-Isolation (Note 6)
tBBM Q VISO VCT THD CNO_(OFF), CNC_(OFF) CCOM_(OFF) C(ON) V+ I+
VGEN = 4V, RGEN = 0, CL = 1.0nF, Figure 4 CL = 5pF, RL = 100, f = 10MHz, Figure 5 CL = 5pF, RL = 100, f = 10MHz, Figure 5 f = 10MHz f = 1MHz f = 10MHz f = 1MHz
Crosstalk (Note 7) Total Harmonic Distortion NO_, NC_ Off-Capacitance COM_ Off-Capacitance COM_ On-Capacitance SUPPLY Supply Range Positive Supply Current
dB % pF pF pF
RL = 600, f = 20Hz to 20kHz VNO_, VNC_ = GND, f = 1MHz, Figure 6 VCOM_ = GND, f = 1MHz, Figure 6 VCOM_ = VNO_, VNC_ = GND, f = 1MHz, Figure 6 1.8 V+ = +5.5V, VIN = 0 or V+
5.5 0.001 1.0
V A
ELECTRICAL CHARACTERISTICS--Single +3V Supply
(V+ = +2.7V to +3.3V, VIH = 2.0V, VIL = 0.4V, TA =TMIN to TMAX, unless otherwise noted. Typical values at TA = +25C.) (Notes 2, 9)
PARAMETER ANALOG SWITCH Analog Signal Range VCOM, VNO, VNC_ RON V+ = 2.7V, ICOM_ = 10mA, VNO_ or VNC_ = 0 to V+ V+ = 2.7V, ICOM_ = 10mA, VNO_ or VNC_ = 0 to V+ V+ = 2.7V, ICOM_ = 10mA, VNO_ or VNC_ = 0 to V+ V+ = 3.3V; VCOM_ = 1V, 3V; VNO_ or VNC_ = 3V, 1V TA = +25C TA = TMIN to TMAX TA = +25C TA = TMIN to TMAX TA = +25C TA = TMIN to TMAX TA = +25C TA = TMIN to TMAX -0.5 -1 0.01 2 0.15 0 4 V+ 6 8 0.4 0.5 3 4 0.5 1 nA V SYMBOL CONDITIONS MIN TYP MAX UNITS
On-Resistance
On-Resistance Match Between Channels (Notes 3, 8)
RON
On-Resistance Flatness (Note 4)
RFLAT(ON)
NO_, NC_ Off-Leakage Current (Note 5)
INO_(OFF), INC_(OFF)
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3V/5V, 4, Wideband Quad 2:1 Analog Multiplexer MAX4674
ELECTRICAL CHARACTERISTICS--Single +3V Supply (continued)
(V+ = +2.7V to +3.3V, VIH = 2.0V, VIL = 0.4V, TA =TMIN to TMAX, unless otherwise noted. Typical values at TA = +25C.) (Notes 2, 9)
PARAMETER COM_ Off-Leakage Current (Note 5) SYMBOL ICOM_(OFF) CONDITIONS V+ = 3.3V; VCOM_ = 1V, 3V; VNO_ or VNC_ = 3V, 1V V+ = 3.3V; VCOM_ = 1V, 3V; VNO_ or VNC_ = 1V, 3V, or floating TA = +25C TA = TMIN to TMAX TA = +25C TA = TMIN to TMAX MIN -0.5 -1 -0.5 -1 0.01 TYP 0.01 MAX 0.5 1 0.5 1 nA nA UNITS
COM_ On-Leakage Current (Note 5) DIGITAL I/O (A0, EN) Input Logic High Input Logic Low Input Leakage Current DYNAMIC Turn-On Time (Note 5)
ICOM_(ON)
VIH VIL IIN VIN = 0 or +5.5V VNO_ or VNC_ = 1.5V, RL = 100, CL = 35pF, Figure 2 VNO_ or VNC_ = 1.5V, RL = 100, CL = 35pF, Figure 2 VNO_ or VNC = 1.5V, RL = 100, CL = 35pF, Figure 3 TA = +25C TA = TMIN to TMAX TA = +25C TA = TMIN to TMAX TA = +25C TA = TMIN to TMAX
2.0 0.4 -0.5 1 12 0.5 22 25 5 8 10 5 1 18 -47 -67 -68 -114 10 20 30
V V A
tON
ns
Turn-Off Time (Note 5)
tOFF
ns
Break-Before-Make (Note 5)
tBBM
ns
Charge Injection Off-Isolation (Note 6) Crosstalk (Note 7) NO_, NC_ Off-Capacitance COM_ Off-Capacitance COM_ On-Capacitance SUPPLY Positive Supply Current
Q VISO VCT CNO_(OFF), CNC_(OFF) CCOM_(OFF) C(ON)
VGEN = 2V, RGEN = 0, CL = 1.0nF, Figure 4 CL = 5pF, RL = 100, f = 10MHz, Figure 5 CL = 5pF, RL = 100, f = 10MHz, Figure 5 f = 10MHz f = 1MHz f = 10MHz f = 1MHz
pC dB dB pF pF pF
VNO_ or VNC_ = GND, f = 1MHz, Figure 6 VCOM_ = GND, f = 1MHz, Figure 6 VCOM_ = VNO_, VNC_ = GND, f = 1MHz, Figure 6 V+ = 3.3V, VIN = 0 or V+
I+
0.001
1.0
A
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: RON = RON(MAX) - RON(MIN). Note 4: Flatness is defined as the difference between the maximum and minimum value of on-resistance as measured over the specified analog signal range. Note 5: Guaranteed by design. Note 6: Off-Isolation = 20log10 (VCOM/VNO), VCOM = output, VNO = input to off switch. Note 7: Between any two switches. Note 8: RON matching specifications for QFN packaged parts are guaranteed by design. Note 9: Parts are tested at the maximum hot-rated temperature. Limits across the entire temperature range are guaranteed by design and correlation. 4 _______________________________________________________________________________________
3V/5V, 4, Wideband Quad 2:1 Analog Multiplexer
Typical Operating Characteristics
(V+ = +5V, TA = +25C, unless otherwise noted.)
ON-RESISTANCE vs. VCOM
MAX4674-01
MAX4674
ON-RESISTANCE vs. VCOM
MAX4674-02
ON/OFF-LEAKAGE CURRENT vs. TEMPERATURE
MAX4674-03
12 10 8 RON () 6 4 2 0 0 1 2 3 4 5 VCOM (V)
3.0 2.5 2.0 RON () 1.5 1.0 TA = +25C TA = -40C TA = +85C
1000
100 V+ = 1.8V V+ = 2.5V V+ = 3.0V V+ = 5.0V 0.5 V+ = 5V 0 0 1 2 3 4 5 VCOM (V) 0.1 -40 -15 ICOM (pA)
ION_LEAK
10 IOFF_LEAK 1
10
35
60
85
TEMPERATURE (C)
CHARGE INJECTION vs. VCOM
MAX4674-04
SUPPLY CURRENT vs. SUPPLY VOLTAGE
MAX4674-05
TURN-ON/-OFF TIME vs. SUPPLY VOLTAGE
MAX4674-06
25
40 35 30 I+ (pA)
30 25 20 15 10 5 0 tOFF
20 tON/tOFF (ns)
Q (pC)
15
25 20 15
tON
10
5 10 0 0 1 2 3 4 5 VCOM (V) 5 0 1 2 3 V+ (V) 4 5 6
1
2
3 V+ (V)
4
5
TURN-ON/-OFF TIME vs. TEMPERATURE
MAX4674-07
OFF-ISOLATION, ON-RESPONSE, AND CROSSTALK vs. FREQUENCY
MAX4674-08
TOTAL HARMONIC DISTORTION vs. FREQUENCY
0.018 0.016
MAX4674-09
12 10 8 6 tOFF 4 2 0 -40 -20 0 20 40 60 80 TEMPERATURE (C) tON
20 0 -20 -40 -60 -80 -100 -120 0.01 0.1 1 10 100 CROSSTALK ON-RESPONSE
0.020
AMPLITUDE (dB)
tON/tOFF (ns)
0.014 THD (%) 1000 0.012 0.010 0.008 0.006 0.004 0.002 10 100 1k FREQUENCY (Hz) 10k 100k
OFF-ISOLATION
FREQUENCY (MHz)
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5
3V/5V, 4, Wideband Quad 2:1 Analog Multiplexer MAX4674
Pin Description
PIN QSOP/TSSOP/SO 1 2 3 4 5 6 7 -- 8 9 10 11 12 13 14 15 16 20 QFN 20 1 2 3 4 5 6 7, 9, 17, 19 8 10 11 12 13 14 15 16 18 16 QFN 15 16 1 2 3 4 5 -- 6 7 8 9 10 11 12 13 14 NAME A0 NC1 NO1 COM1 NC2 NO2 COM2 N.C. GND COM3 NO3 NC3 COM4 NO4 NC4 EN V+ Address Input Normally Closed Terminal Normally Open Terminal Analog Switch Common Terminal Normally Closed Terminal Normally Open Terminal Analog Switch Common Terminal No Connection Ground Analog Switch Common Terminal Normally Open Terminal Normally Closed Terminal Analog Switch Common Terminal Normally Open Terminal Normally Closed Terminal Output Enable, Active Low Positive Supply Voltage FUNCTION
Detailed Description
The MAX4674 is a low on-resistance (RON), low-voltage, quad 2:1 analog multiplexer/demultiplexer that operates from a +1.8V to +5.5V single supply. The MAX4674 features very fast switching speed (tON = 18ns max, tOFF = 6ns max) and guaranteed breakbefore-make switching. Its low RON allows high continuous currents to be switched in a variety of applications.
Digital Interface
A0 and EN are CMOS digital inputs that meet TTL logic levels when V+ = 5V. Note that A0 and EN can exceed the voltage at V+ to a maximum of +5.5V. This feature allows operation of the MAX4674 from a +3.3V supply while controlling it with 5V CMOS logic signals. The Pin Configuration/Functional Diagram/Truth Table located on the first page of this data sheet details the operation of the MAX4674.
Applications Information
Power-Supply Considerations
Overview The MAX4674 construction is typical of most CMOS analog switches. It has two supply pins, V+ and GND, used to drive the internal CMOS switches and set the
6
limits of the analog voltage on any switches. Reverse ESD-protection diodes are internally connected between each analog-signal pin and both V+ and GND. If any analog signal exceeds V+ and GND, one of these diodes conducts. During normal operation, these and other reverse-biased ESD diodes leak, forming the only current drawn from VCC or GND. Virtually all the analog leakage current comes from the ESD diodes. Although the ESD diodes on a given signal pin are identical and therefore fairly well balanced, they are reverse biased differently. Each is biased by either V+ or GND and the analog signal. This means their leakages will vary as the signal varies. The difference in the two-diode leakages to the V+ and GND pins constitutes the analog-signal-path leakage current. All analog leakage current flows between each pin and one of the supply terminals, not to the other switch terminal, which is why both sides of a given switch can show leakage currents of either the same or opposite polarity. V+ and GND power the internal logic and set the input logic limits. Logic inputs have ESD-protection diodes to ground. The logic-level thresholds are TTL/CMOS compatible when V+ is +5V. As V+ rises, the threshold increases; as V+ falls, the threshold decreases. For example,
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3V/5V, 4, Wideband Quad 2:1 Analog Multiplexer
when V+ = +3V, the guaranteed minimum logic-high threshold decreases to 2.0V. Low-Voltage Operation The MAX4674 operates from a single supply between +1.8V and +5.5V. At room temperature, it actually "works" with a single supply near or below +1.7V; as supply voltage decreases, however, switch on-resistance becomes very high.
High-Frequency Performance
In 50 systems, signal response is reasonably flat up to 50MHz (see Typical Operating Characteristics). Above 20MHz, the on response has several minor peaks that are highly layout dependent. The problem is not turning the switch on, but turning it off. The off-state switch acts like a capacitor and passes higher frequencies with less attenuation. At 10MHz, off-isolation is about -50dB in 50 systems, becoming worse (approximately 20dB per decade) as frequency increases. Higher circuit impedances also degrade off-isolation. Adjacent channel attenuation is about 3dB above that of a bare IC socket and is entirely due to capacitive coupling.
MAX4674
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 device. Always sequence V+ on first, followed by the logic inputs and analog signals. 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 GND, but does not affect the device's low switch resistance and low leakage characteristics. Device operation is unchanged, and the difference between V+ and GND should not exceed 6V. These protection diodes are not recommended if signal levels must extend to ground.
Chip Information
TRANSISTOR COUNT: 478
V+
D1 EXTERNAL BLOCKING DIODE
MAX4674
V+
* *
GND
* *
D2 EXTERNAL BLOCKING DIODE GND *INTERNAL PROTECTION DIODES
Figure 1. Overvoltage Protection Using External Blocking Diodes _______________________________________________________________________________________ 7
3V/5V, 4, Wideband Quad 2:1 Analog Multiplexer MAX4674
Test Circuits/Timing Diagrams
V+ VAO AO 50 V+ NO VNO_ VIH + 0.5V VAO 0 VOUT NC EN GND RL COM CL* VOUT GND tOFF tON 90% 50% tR < 5ns tF < 5ns
MAX4674
*CL INCLUDES STRAY CAPACITANCE.
Figure 2. Turn-On and Turn-Off Times
V+ VAO AO 50 V+ NC, NO VN_ _ VIH + 0.5V VAO 0 VCOM 90% COM GND RL CL* VOUT VOUT 0 *CL INCLUDES STRAY CAPACITANCE. tBBM tR < 5ns tF < 5ns
50%
MAX4674
EN
Figure 3. Break-Before-Make Interval
V+ V+ V+ V+ OR GND AO NC, NO RGEN VEN 0 VGEN VOUT VEN 50 EN GND COM CL * VOUT IS THE MEASURED VOLTAGE DUE TO CHARGETRANSFER ERROR Q WHEN THE CHANNEL TURNS OFF. *CL INCLUDES STRAY CAPACITANCE. Q = VOUT CL VOUT VOUT
MAX4674
Figure 4. Charge Injection 8 _______________________________________________________________________________________
3V/5V, 4, Wideband Quad 2:1 Analog Multiplexer
Test Circuits/Timing Diagrams (continued)
V+ 10nF NETWORK ANALYZER 50 50
MAX4674
V+ V+ OR GND AO NC, NO
VIN
OFF-ISOLATION = 20log
VOUT VIN VOUT VIN VOUT VIN
MAX4674
VOUT EN GND 50 50 COM MEAS REF
ON-LOSS = 20log
CROSSTALK = 20log
NOTES: MEASUREMENTS ARE STANDARDIZED AGAINST SHORTS AT SOCKET TERMINALS. OFF-ISOLATION IS MEASURED BETWEEN COM AND "OFF" NO TERMINAL ON EACH SWITCH. ON-LOSS IS MEASURED BETWEEN COM AND "ON" NO TERMINAL ON EACH SWITCH. CROSSTALK IS MEASURED FROM ONE CHANNEL TO ALL OTHER CHANNELS. SIGNAL DIRECTION THROUGH SWITCH IS REVERSED; WORST VALUES ARE RECORDED.
Figure 5. Off-Isolation, On-Loss, and Crosstalk
V+
V+ V+ OR GND AO NC, NO
MAX4674
EN GND COM 1MHz CAPACITANCE ANALYZER
Figure 6. Capacitance
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9
3V/5V, 4, Wideband Quad 2:1 Analog Multiplexer MAX4674
Package Information
QSOP.EPS
10
______________________________________________________________________________________
TSSOP.EPS
3V/5V, 4, Wideband Quad 2:1 Analog Multiplexer
Package Information (continued)
SOICN.EPS
MAX4674
______________________________________________________________________________________
11
3V/5V, 4, Wideband Quad 2:1 Analog Multiplexer MAX4674
Package Information (continued)
12,16,20, 24L QFN.EPS
12
______________________________________________________________________________________
3V/5V, 4, Wideband Quad 2:1 Analog Multiplexer MAX4674
Package Information (continued)
12,16,20, 24L QFN.EPS
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.
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 13 (c) 2002 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.

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