DS36950

Quad Differential Bus Transceiver

General Description

The DS36950 is a low power, space-saving quad EIA-485

differential bus transceiver especially suited for high speed,

parallel, multipoint, computer I/O bus applications. A com-

pact 20-pin surface mount PLCC package provides high

transceiver integration and a very small PC board footprint.

Timing uncertainty across an interface using multiple de-

vices,

a

typical

problem

in

a

parallel

interface,

is

specified — minimum and maximum propagation delay times

are guaranteed.

Six devices can implement a complete IPI master or slave

interface. Three transceivers in a package are pinned out for

connection to a parallel databus. The fourth transceiver, with

the flexibility provided by its individual enables, can serve as

a control bus transceiver.

Features

n

Pinout for IPI interface

n

Compact 20-pin PLCC package

n

Meets EIA-485 standard for multipoint bus transmission

n

Greater than 60 mA source/sink

n

Thermal Shutdown Protection

Pinout and Logic Diagram

01060201

Order Number DS36950

See NS Package Number V20A

01060202

July 1998

© 2004 National Semiconductor Corporation

DS010602

www.national.com