ITC137P

Integrated Telecom Circuits

www.ixysic.com

DS-ITC137P-R05

1

Pb

Applications

Features

Description

Approvals

Ordering Information

Pin Configuration

Circuits

Current Detect

TUV Certificate: B 09 07 49410 006

Parameter

Rating

Units

Relay Load Voltage

350

V

Relay Load Current

120

mA

Relay On-Resistance (max)

15



Bridge Rectifier Reverse Voltage

100

V

Darlington Collector Current

120

mA

Darlington Current Gain

10,000

-

Part #

Description

ITC137P

16-Pin SOIC (50/Tube)

ITC137PTR

16-Pin SOIC (1000/Reel)

ITC137P

PV

1

2

3

4

16

15

14

13

5

6

7

8

(N/C)

– LED - Form A Relay

– LED - Form A Relay

+ Zener Diode (cathode)

– Zener Diode (anode)

+ Zener Diode (cathode)

Collector - Phototransistor

Emitter - Phototransistor

Output Form A

Output Form A/Bridge Input –/+

Darlington Base

Darlington Emitter

Bridge Output +/Darlington Collector/

+ Zener Diode (cathode)

Bridge Output –/– Zener Diode (anode)

LED - Phototransistor –/+

LED - Phototransistor +/–

**

12

11

10

9

This Integrated Telecom Circuit combines a single-pole,

normally open (1-Form-A) solid state relay, a bridge

rectifier, a Darlington transistor, an optocoupler, and

three Zener diodes into one 16-pin SOIC package,

consolidating designs and reducing component count

in telecom applications.

The ITC137’s optocoupler provides for full-wave

detection of ringing signals.

Switching Characteristics

of Normally Open Devices

Form-A

I

F

I

LOAD

10%

90%

t

on

t

off