DESCRIPTION

The VO221AT, VO222AT, VO223AT are high current transfer

ratio (CTR) optocouplers with a gallium arsenide infrared

LED emitter and a silicon NPN photodarlington transistor

detector.

The device has a CTR tested at 1 mA LED current. This low

drive current permits easy interfacing from CMOS to LSTTL

or TTL.

FEATURES

• Isolation test voltage, 4000 VRMS

• Material categorization:

For definitions of compliance please see

www.vishay.com/doc?99912

AGENCY APPROVALS

• UL1577, file no. E52744 system code Y

• cUL - file no. E52744, equivalent to CSA bulletin 5A

• DIN EN 60747-5-5 (VDE 0884-5) approved, contact

customer service if this option is required