V–

V+

GND

NC

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

9

Top View

DG308A

DG308A/DG309

Vishay Siliconix

Document Number: 70046

S-52882—Rev. E, 28-Apr-97

www.vishay.com

S FaxBack 408-970-5600

4-1

Quad Monolithic SPST CMOS Analog Switches

FEATURES

BENEFITS

APPLICATIONS

D "15-V Analog Input Range

D Low On-Resistance: 60 W

D Fast Switching: 130 ns

D Low Power Dissipation: 30 nW

D CMOS Logic Compatible

D Full Rail-to-Rail Analog Signal Range

D Low Signal Error

D Wide Dynamic Range

D Single or Dual Supply Capability

D Static Protected Logic Inputs

D Space Savings (TSSOP)

D Portable and Battery Powered

Instrumentation

D Communication Systems

D Computer Peripherals

D High-Speed Multiplexing

DESCRIPTION

Featuring low on-resistance (60

W) and fast switching

(130 ns), the DG308A is supplied in the “normally open”

configuration while DG309 is supplied “normally closed.” Input

thresholds are high voltage CMOS compatible.

Designed with the Vishay Siliconix PLUS-40 CMOS process

to combine low power dissipation with a high breakdown

voltage rating of 44 V, each switch conducts equally well in

both directions when on, and blocks up to the supply voltage

when off. An epitaxial layer prevents latch up.

The DG308B/309B upgrades are recommended for new

designs.

FUNCTIONAL BLOCK DIAGRAM AND PIN CONFIGURATION

Four SPST Switches per Package

TRUTH TABLE

Logic

DG308A

DG309

0

OFF

ON

1

ON

OFF

Logic “0”

v 3.5 V

Logic “1”

w 11 V