DG221B

Features:

Accepts 150-ns Write Pulse Width
5-V On-Chip Regulator
Latches Are Transparent with WR Low
Low On-Resistance: 60




Application

P Based Systems
Automatic Test Equipment
Communication Systems
Data Acquisition Systems
Medical Instrumentation
Factory Automation




Specifications

V+........ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 V
GND .. . . . .. . . . . . . . . . .. . . . . . . . . . . . . . . . ...... . . . . . . . . . . . . . . . . . . . . . .25 V
Digital Inputs^a V_S, V_D . . .. . . . .. . . . . . . . .. . .. . .. . . .. . . .. . .. (V-) -2 V to (V+) +2 V
or 20 mA, whichever occurs first
Continuous Current (Any Terminal) .. . . . . . . . . .. . . . . . .. .. . . . .. . . . . .. . . . 30 mA
Current, S or D................................................ .. . . .. . . ... . .. . .... .. .. . . .. . .20 mA
Peak Current, S or D (Pulsed 1 ms, 10% duty cycle). .. .. .. . ... . ... .. ... . ... . . 70 mA
Storage Temperature: (DJ and DY Suffix) . . . . . . . .. . .. . . . . .. . .. . . .. . -65 to 125
Power Dissipation (Package)b
16-Pin Plastic DIP^c . . . . . . . . . . .. . . . . . . . .. . . . . . . . . .. . . . . . . . . . .. .. . . 470 mW
QFN-16^d . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . .. . . . . . . . . . . .600 mW





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 DG221B features true bidirectional performance in the on condition.