FEATURES

? ± 22 V supply voltage rating

? CMOS compatible logic

? Low on-resistance - RDS(on): 45 ?

? Low leakage - ID(on): 20 pA

? Single supply operation possible

? Extended temperature range

? Fast switching - tON: < 200 ns

? Low glitching - Q: 1 pC

BENEFITS

? Wide analog signal range

? Simple logic interface

? Higher accuracy

? Minimum transients

? Reduced power consumption

? Superior to DG308A, DG309

? Space savings (TSSOP)

APPLICATIONS

? Industrial instrumentation

? Test equipment

? Communications systems

? Disk drives

? Computer peripherals

? Portable instruments

? Sample-and-hold circuits

DESCRIPTION

The DG308B, DG309B analog switches are highly improved

versions of the industry-standard DG308A, DG309. These

devices are fabricated in Vishay Siliconix’ proprietary silicon

gate CMOS process, resulting in lower on-resistance, lower

leakage, higher speed, and lower power consumption.

These quad single-pole single-throw switches are designed

for a wide variety of applications in telecommunications,

instrumentation, process control, computer peripherals, etc.

An improved charge injection compensation design

minimizes switching transients. The DG308B and DG309B

can handle up to ± 22 V input signals. An epitaxial layer

prevents latchup.

All devices feature true bi-directional performance in the on

condition, and will block signals to the supply levels in the off

condition.

The DG308B is a normally open switch and the DG309B is

a normally closed switch. (see Truth Table.)