VISHAY

IL256AT

Document Number 83620

Rev. 1.4, 22-Apr-04

Vishay Semiconductors

www.vishay.com

1

i179025

A/C

NC

B

C

E

1

2

3

4

8

7

6

5

NC

NC

C/A

Optocoupler, Phototransistor Output, AC Input, With Base

Connection

Features

• Guaranteed CTR Symmetry, 2:1 Maximum

• Bidirectional AC Input Industry Standard SOIC-8

Surface Mountable Package

• Standard Lead Spacing, .05 "

• Available only on Tape and Reel (Conform to EIA

Standard RS481A)

Agency Approvals

• UL File #E52744 System Code Y

• CSA 93751

• DIN EN 60747-5-2(VDE0884)

DIN EN 60747-5-5 pending

Available with Option 1

• FIMKO

Applications

Telecom applications ring detection

Description

The IL256A is an AC input phototransistor optocou-

pler. The device consists of two infrared emitters con-

nected in reverse parallel and coupled to a silicon

NPN phototransistor detector.

These circuit elements are constructed with a stan-

dard SOIC-8 foot print.

The product is well suited for telecom applications

such as ring detection or off/on hook status, given its

bidirectional LED input and guaranteed current trans-

Order Information

For additional information on the available options refer to

Option Information.

Absolute Maximum Ratings

Stresses in excess of the absolute Maximum Ratings can cause permanent damage to the device. Functional operation of the device is

not implied at these or any other conditions in excess of those given in the operational sections of this document. Exposure to absolute

Maximum Rating for extended periods of the time can adversely affect reliability.

Input

Part

Remarks

IL256AT

CTR > 20 %, Tape and reel, SOIC-8

Parameter

Test condition

Symbol

Value

Unit

Forward continuous current

60

mA

Power dissipation

90

mW

Derate linearly from 25 °C

0.8

mW/°C