DS-CPC7581-R06

www.ixysic.com

1

Not for New Designs

Features

ON

Mode to Idle/Talk Mode

Limiting, Thermal Shutdown for SLIC Protection

Circuitry Required

Product

Applications

Description

The CPC7581 is a monolithic solid-state four-pole

switch in a 16-pin package. It provides the necessary

functions to replace a 2-Form-C electromechanical

relay on traditional analog and integrated voice and

data (IVD) line cards found in central office, access, and

PBX equipment. The CPC7581 contains solid-state

switches for tip and ring lead line break and ringing

injection/ringing return. The device requires only a +5 V

supply, and offers break-before-make and

make-before-break operation using logic-level inputs.

The CPC7581BA versions include an SCR that

provides protection to the SLIC and subsequent

circuitry during a fault condition.

Ordering Information

Figure 1. CPC7581 Block Diagram

Part #

Description

CPC7581BA

16-Pin SOIC, with Protection SCR, 50/Tube

CPC7581BATR

16-Pin SOIC, with Protection SCR, 1000/Reel

CPC7581BB

16-Pin SOIC, without Protection SCR, 50/Tube

CPC7581BBTR

16-Pin SOIC, without Protection SCR, 1000/Reel

CPC7581

T

LINE

R

LINE

T

BAT

V

DD

R

BAT

D

GND

V

BAT

F

GND

V

REF

IN

RINGING

T

SD

LATCH

3

6

14

2

7

8

9

16

1

12

15

10

11

L

A

T

C

H

Switch

Control

Logic

SCR and

Trip Circuit

CPC7581BA)

Secondary

Protection

+5 Vdc

Tip

Ring

SLIC

X

X

X

X

SW2

SW4

V

BAT

RINGING

300

(min.)

Ω

T

RING

SW3

SW1

Pb

CPC7581

Line Card Access Switch