Datasheet

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_______________General Description

The MAX394 is a precision, low-voltage, quad, single-

pole/double-throw (SPDT) analog switch. The four inde-

pendent switches operate with bipolar supplies ranging

from ±2.7V to ±8V, or with a single supply of +2.7V to

+15V. The MAX394 offers low on-resistance (less than

35Ω), guaranteed to match within 2Ω between channels

and to remain flat over the analog signal range (Δ4Ω

max). It also offers break-before-make switching (10ns

typical), with turn-off times less than 75ns and turn-on

times less than 130ns. The MAX394 is ideal for portable

operation since quiescent current runs less than 1µA with

all inputs high or low.

This monolithic, quad switch is fabricated with Maxim’s

low voltage silicon-gate process. Design improvements

guarantee extremely low charge injection (10pC), low

power consumption (10µW), and electrostatic discharge

(ESD) greater than 2000V.

Logic inputs are TTL and CMOS compatible and guaran-

teed over a +0.8V to +2.4V range for supply voltages up

to +8V. When supplies exceed +8V, the inputs are typi-

cally +0.8V to +4V. Logic inputs and switched analog sig-

nals can range anywhere between the supply voltages

without damage.

________________________Applications

Test Equipment Portable Instruments

Communications Systems Audio Signal Routing

PBX, PABX Set-Top Boxes

Heads-Up Displays

____________________________Features

♦♦

Low On-Resistance, < 17Ω Typical (35Ω max)

♦♦

Guaranteed Matched On-Resistance Between

Channels, < 2Ω

♦♦

Guaranteed Flat On-Resistance over Analog

Signal Range, Δ4Ω Max

♦♦

Guaranteed Charge Injection < 10pC

♦♦

Guaranteed Off-Channel Leakage < 2.5nA at +85°C

♦♦

ESD Guaranteed > 2000V per Method 3015.7

♦♦

Single-Supply Operation (+2.7V to +15V)

Bipolar-Supply Operation (±2.7V to ±8V)

♦♦

TTL/CMOS-Logic Compatibility

♦♦

Rail-to-Rail Analog Signal Handling Capability

♦♦

Pin Compatible with MAX333, MAX333A

MAX394

Low-Voltage, Quad, SPDT,

CMOS Analog Switch

________________________________________________________________

Maxim Integrated Products

SWITCHES ARE SHOWN WITH LOGIC "0" INPUT

N.C. = NOT INTERNALLY CONNECTED

IN4

NO4

COM4

NC4

NC1

COM1

NO1

IN1

MAX394

V+

N.C.

NC3

COM3

COM2

NC2

GND

V-

NO3

IN3

IN2

NO2

TOP VIEW

DIP/SO/TSSOP

INPUTS

OSC

FLYING CAPACITOR

LEVEL TRANSLATOR

(2-CHANNEL)

OUTPUTS

- V

__________________Pin Configuration

Typical Operating Circuit

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.

19-0391; Rev 2; 9/08

PART TEMPERATURE PIN-PACKAGE

MAX394CPP 0°C to +70°C 20 Plastic DIP

MAX394CWP 0°C to +70°C 20 Wide SO

MAX394C/D 0°C to +70°C Dice*

MAX394EPP -40°C to +85°C 20 Plastic DIP

MAX394EWP -40°C to +85°C 20 Wide SO

MAX394EUP -40°C to +85°C 20 TSSOP

MAX394MJP -55°C to +85°C 20 CERDIP**

MAX394MWP/PR -55°C to +125°C 20 Wide SO**

MAX394MWP/PR-T

-55°C to +125°C 20 Wide SO**

Ordering Information

Contact factory for dice specifications.

Contact factory for availability.

Summary of content (13 pages)

PAGE 1
9-0391; Rev 2; 9/08 Low-Voltage, Quad, SPDT, CMOS Analog Switch ____________________________Features The MAX394 is a precision, low-voltage, quad, singlepole/double-throw (SPDT) analog switch. The four independent switches operate with bipolar supplies ranging from ±2.7V to ±8V, or with a single supply of +2.7V to +15V. The MAX394 offers low on-resistance (less than 35Ω), guaranteed to match within 2Ω between channels and to remain flat over the analog signal range (Δ4Ω max).
PAGE 2
MAX394 Low-Voltage, Quad, SPDT, CMOS Analog Switch ABSOLUTE MAXIMUM RATINGS Voltage Referenced to GND V+ .......................................................................-0.3V to +17V V- ........................................................................+0.3V to -17V V+ to V-...............................................................-0.3V to +17V COM_, NO_, NC_, IN_ (Note 1) ..................(V- - 2V) to (V+ + 2V) or 30mA, whichever occurs first Continuous Current, Any Pin..................
PAGE 3
Low-Voltage, Quad, SPDT, CMOS Analog Switch (V+ = 5V ±10%, V- = -5V ±10%, GND = 0V, VINH = 2.4V, VINL = 0.8V, TA = TMIN to TMAX, unless otherwise noted.) PARAMETER SYMBOL CONDITIONS MIN TYP (Note 2) MAX UNITS DIGITAL LOGIC INPUT Input Current with Input Voltage High IINH VIN = 2.4V, all others = 0.8V -1.0 +0.005 +1.0 µA Input Current with Input Voltage Low IINL VIN = 0.8V, all others = 2.4V -1.0 +0.005 +1.
PAGE 4
MAX394 Low-Voltage, Quad, SPDT, CMOS Analog Switch ELECTRICAL CHARACTERISTICS—Single +5V Supply (V+ = 5V ±10%, V- = 0V, GND = 0V, VINH = 2.4V, VINL = 0.8V, TA = TMIN to TMAX, unless otherwise noted.) PARAMETER SYMBOL TEMP. RANGE CONDITIONS MIN TYP (Note 2) MAX UNITS SWITCH Analog Signal Range On-Resistance On-Resistance Match Between Channels (Note 4) On-Resistance Flatness (Note 4) NC or NO Off-Leakage Current (Note 8) COM Leakage Current (Note 8) VCOM, VNO, VNC RON ΔRON (Note 3) V+ = 5.
PAGE 5
Low-Voltage, Quad, SPDT, CMOS Analog Switch (V+ = +5V ±10%, V- = 0V, GND = 0V, VINH = 2.4V, VINL = 0.8V, TA = TMIN to TMAX, unless otherwise noted.) PARAMETER SYMBOL MIN CONDITIONS TYP (Note 2) MAX 160 250 UNITS DYNAMIC Turn-On Time (Note 3) tON VCOM = 3V, Figure 2 Turn-Off Time (Note 3) tOFF VCOM = 3V, Figure 2 Break-Before-Make Time Delay (Note 3) Charge Injection (Note 3) TA = +25°C TA = TMIN to TMAX TA = +25°C 60 TA = TMIN to TMAX tD VCTE 300 TA = +25°C CL = 1.
PAGE 6
MAX394 Low-Voltage, Quad, SPDT, CMOS Analog Switch ELECTRICAL CHARACTERISTICS—Single +3.3V Supply (continued) (V+ = 3.0V to 3.6V, GND = 0V, VINH = 2.4V, VINL = 0.8V, TA = TMIN to TMAX, unless otherwise noted.) PARAMETER SYMBOL CONDITIONS MIN TYP (Note 2) MAX UNITS DIGITAL LOGIC INPUT Input Current with Input Voltage High IINH VIN = 2.4V, all others = 0.8V -1.0 +0.005 +1.0 µA Input Current with Input Voltage Low IINL VIN = 0.8V, all others = 2.4V -1.0 +0.005 +1.
PAGE 7
Low-Voltage, Quad, SPDT, CMOS Analog Switch ON-RESISTANCE vs. VCOM OVER TEMPERATURE (DUAL SUPPLIES) ON-RESISTANCE vs. VCOM (SINGLE SUPPLY) 30 50 MAX394-02 100 MAX394-01 35 90 20 15 V+ = 5V, V- = -5V RON (Ω) 70 RON (Ω) RON (Ω) V+ = 3V, V- = -3V V+ = +5V V- = -5V 40 80 25 MAX394-03 ON-RESISTANCE vs.
PAGE 8
____________________________Typical Operating Characteristics (continued) (TA = +25°C, unless otherwise noted). CHARGE INJECTION vs. VCOM SUPPLY CURRENT vs. TEMPERATURE 40 V+ = 5.5V V- = -5.5V 10 SUPPLY CURRENT (μA) 30 20 10 V+ = 3V, V- = 0V 0 -10 -20 V+ = 5V, V- = 0V V+ = 5V, V- = -5V MAX394-08 100 MAX394-07 50 Q (pC) 1 I+ or I- 0.1 0.01 0.001 -30 0.0001 -40 -50 0.00001 -5 -4 -3 -2 -1 0 1 2 3 4 -75 5 -50 -25 VCOM (V) 0 25 50 75 TEMPERATURE (°C) OFF-ISOLATION vs.
PAGE 9
Low-Voltage, Quad, SPDT, CMOS Analog Switch PIN NAME FUNCTION 1, 10, 11, 20 IN1–IN4 Logic-Level Inputs MAX394 Pin Description +5V D1 V+ 2, 9, 12, 19 NO1–NO4 3, 8, 13, 18 COM1–COM4 4, 7,14, 17 NC1–NC4 Normally Open Switches MAX394 Common Switch Poles Normally Closed Switches 5 V- Negative Power Supply 6 GND Ground 15 N.C.
PAGE 10
MAX394 Low-Voltage, Quad, SPDT, CMOS Analog Switch ______________________________________________Test Circuits/Timing Diagrams t R < 20ns t F < 20ns 3V 50% 50% V IN 0V V COM 50% 50% 0V 50% -10V NO_ 300Ω IN_ t OPEN MAX394 V+ LOGIC INPUT 50% GND +15V t OFF t ON SWITCH OUTPUT COM_ -10V t OFF +10V NC_ +10V t ON t OPEN V- -15V (REPEAT TEST FOR IN2, IN3, AND IN4.) Figure 2.
PAGE 11
Low-Voltage, Quad, SPDT, CMOS Analog Switch +5V V+ R GEN ΔVO MAX394 COM_ V GEN NC OR NO GND IN_ VO VO CL 10nF V- IN_ ON ON OFF -5V Q = (ΔV O )(C L ) Figure 6. Charge Injection +5V C SIGNAL GENERATOR COM_ V+ MAX394 0V, 2.4V IN_ ANALYZER CH A CH B NC_ OR NO_ GND RL 50Ω V- FREQUENCY TESTED SIGNAL GENERATOR 1 MHz AUTOMATIC SYNTHESIZER ANALYZER TRACKING SPECTRUM ANALYZER C VCOM VISO = 20LOG VNC OR VNO -5V C = 5pF Figure 7.
PAGE 12
MAX394 Low-Voltage, Quad, SPDT, CMOS Analog Switch ___________________Chip Topography NO1 IN1 IN4 Package Information For the latest package outline information and land patterns, go to www.maxim-ic.com/packages. NO4 PACKAGE TYPE COM1 COM4 NC1 NC4 PACKAGE CODE DOCUMENT NO. 20 Plastic DIP P20-4 21-0043 20 Wide SO W26-1 21-0042 20 TSSOP U20-2 21-0066 20 CERDIP J20-2 21-0335 0.128" V+ (3.25mm) VGND NC2 NC3 COM2 COM3 NO2 IN3 0.100" (2.
PAGE 13
Low-Voltage, Quad, SPDT, CMOS Analog Switch REVISION NUMBER REVISION DATE 2 9/08 DESCRIPTION Added information for rugged plastic product PAGES CHANGED 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.