DS-CPC7581-R05

www.clare.com

1

Features

percent smaller than the SOIC version, 40 percent

smaller than fourth generation EMR solutions.

ON

mode to idle/talk mode.

limiting, thermal shutdown for SLIC protection

required

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 CPC7581xA versions include an SCR that

provides protection to the SLIC and subsequent

circuitry during a fault condition. The CPC7581xC

versions are functionally identical to the CPC7581xA

versions, but with higher SCR hold current.

Ordering Information

Figure 1. CPC7581 Block Diagram

CPC7581 x x xx

B - 16-pin SOIC delivered 50/Tube, 1000/Reel

M - 16-pin DFN delivered 52/Tube, 1000/Reel

A - With Protection SCR

B - Without Protection SCR

C - With Protection SCR and higher SCR hold current

TR - Add for Tape & Reel Version

CPC7581 part numbers are specified as shown here:

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

(CPC7581xA/C)

Secondary

Protection

+5 Vdc

Tip

Ring

SLIC

X

X

X

X

SW2

SW4

V

BAT

RINGING

300

(min.)

Ω

T

RING

SW3

SW1

RoHS

2002/95/EC

Pb

Not for New Designs

CPC7581

Line Card Access Switch