DS-CPC5903-R02

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1

Features

Applications

Approvals

TUV Certificate: B 11 10 49410 007

Description

The CPC5903 is a dual, optically isolated, logic-bus

repeater. It isolates two open-drain logic signals while

two sides are powered by different supply voltages, it

also functions as a logic level translator for levels as

low as 2.7V or as high as 5.5V. Because the CPC5903

signal, it is best suited for applications where clock

stretching is not required. This configuration also

Unlike transformer or capacitive isolators, optical

isolation passes DC signals and does not require

continuous clocking to ensure the proper state is

maintained. The CPC5903 always returns the buffered

signals to their proper state after transient

interruptions on either side.

Ordering Information

Figure 1. CPC5903 Functional Block Diagram

Pb

Part

Description

CPC5903G

8-Pin DIP (50 / Tube)

CPC5903GS

8-Pin Surface Mount (50 / Tube)

CPC5903GSTR

8-Pin Surface Mount (1000 / Reel)

V

DDA

V

DDB

V

DDA

B

V

DDB

OB

LED

V

DDA

IA

V

DDA

A

V

DDB

B

A

GND

A

A

V

DDA

LED

V

DDA

IOA

V

DDB

Q

D

CLR

B

V

DDB

LED

V

DDB

IOB

B

GND

B

1

2

3

45

6

7

8

CPC5903