FEATURES

• Accepts 150 ns write pulse width

• 5 V on-chip regulator

• Latches are transparent with WR low

• Low on-resistance: 60 W

BENEFITS

• Compatible with most μP buses

• Allows wide power supply tolerance without affecting TTL

compatibility

• Reduced power consumption

• Allows flexibility of design

APPLICATIONS

• μP based systems

• Automatic test equipment

• Communication systems

• Data acquisition systems

• Medical instrumentation

• Factory automation

DESCRIPTION

The DG221B is a monolithic quad single-pole, single-throw

analog switch designed for precision switching applications

in communication, instrumentation and process control

systems.

Featuring independent onboard latches and a common WR

pin, each DG221B can be memory mapped, and addressed

as a single data byte for simultaneous switching.

The DG221B combines low power and low on-resistance

(60 typical) while handling continuous currents up to 20 mA.

An epitaxial layer prevents latchup.

The device features true bidirectional performance in the on

condition.