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CPC7581

DS-CPC7581-R2

The CPC7581 is a monolithic solid state switch in a 16 pin

surface mount SOIC package. It provides the necessary

functions to replace a 2-Form-C electromechanical relay

on analog line cards found in Central Office, Access and

PBX equipment. The device contains solid state switches

for tip and ring line break and ring injection/ring return.

The CPC7581 requires only a +5V supply and offers

“break-before-make” or “make-before-break” switch oper-

ation using simple logic level input control. There are two

versions of the CPC7581, the CPC7581BA and the

CPC7581BB. The “BA” version has a protection SCR

which provides protection to the SLIC device and subse-

quent circuitry during fault conditions.

ON

to idle/talk mode

limiting, thermal shutdown and SLIC protection

Applications

Features

Description

Line Card Access Switch

Ordering Information

Part #

Description

CPC7581BA

4 Pole with protection SCR

CPC7581BB

4 Pole without protection SCR

CPC7581BA-TR Tape & Reel Version

CPC7581BB-TR Tape & Reel Version

Block Diagram

R1

R2

Ring

TIP

Secondary

Protection

SW1

Break

SW2

Break

SW3

Ringing

Return

SW4

Ringing

Access

SCR

and Trip

Circuit

SLIC

Ring Generator

V

BAT

Reference (16)

CPC7581BA

Battery

+

-

R

(14)

(3)

(2)

(15)