TLF5255

January 1996

DS26LS32CDS26LS32MDS26LS32ACDS26LS33C

DS26LS33MDS26LS33AC Quad Differential Line

Receivers

General Description

The DS26LS32 and DS26LS32A are quad differential line

receivers designed to meet the RS-422 RS-423 and Feder-

al Standards 1020 and 1030 for balanced and unbalanced

digital data transmission

The DS26LS32 and DS26LS32A have an input sensitivity of

DS26LS33 and DS26LS33A have an input sensitivity of

Both the DS26LS32A and DS26LS33A differ in function

from the popular DS26LS32 and DS26LS33 in that input

pull-up and pull-down resistors are included which prevent

output oscillation on unused channels

Each version provides an enable and disable function com-

mon to all four receivers and features TRI-STATE

outputs

with 8 mA sink capability Constructed using low power

Schottky processing these devices are available over the

full military and commerical operating temperature ranges

Features

Y

High differential or common-mode input voltage ranges

on the DS26LS33 and DS26LS33A

Y

g

02V sensitivity over the input voltage range on the

DS26LS33 and DS26LS33A

Y

DS26LS32 and DS26LS32A meet all requirements of

RS-422 and RS-423

Y

6k minimum input impedance

Y

100 mV input hysteresis on the DS26LS32 and

DS26LS32A

200

mV

on

the

DS26LS33

and

DS26LS33A

Y

Operation from a single 5V supply

Y

TRI-STATE outputs with choice of complementary out-

put enables for receiving directly onto a data bus

Logic Diagram

TLF5255 – 1

Connection Diagram

Dual-In-Line Package

TLF5255 – 2

Top View

Truth Table

ENABLE

ENABLE

Input

Output

0

1

X

Hi-Z

See

1

Note Below

0

Note Input conditions may be any combination not defined for ENABLE

and ENABLE

Order Number DS26LS32CM DS26LS32CN

DS26LS32MJ DS26LS32ACM DS26LS32ACN

DS26LS33CN DS26LS33MJ or DS26LS33ACN

See NS Package Number J16A M16A or N16A

For Complete Military 883 Specifications

See RETS Data Sheet

Order Number DS26LS32MJ883 DS26LS32MW883

DS26LS33MJ883 DS26LS33MW883

See NS Package Number J16A or W16A

TRI-STATE

is a registered trademark of National Semiconductor Corporation

C1996 National Semiconductor Corporation

RRD-B30M36Printed in U S A

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