DS14C89A

Quad CMOS Receiver

General Description

The DS14C89A, pin-for-pin compatible to the DS1489A/

MC1489A, ia a quad receiver designed to interface data

terminal equipment (DTE) with data circuit-terminating

equipment (DCE). These devices translate levels conform-

ing to EIA-232E and CCITT V.28 standards to TTL/CMOS

logic levels.

The device is fabricated in low threshold CMOS metal gate

technology. The device provides very low power consump-

tion

compared

to

their

bipolar

equivalents:

900

µA

(DS14C89A) versus 26 mA (DS1489A).

The DS14C89A provides on chip noise filtering which elimi-

nates the need for external response control filter capacitors.

When replacing the DS1489A with the DS14C89A, the re-

sponse control filter pins can be tied high, low, or not con-

nected.

Features

n

Meets EIA/TIA-232-E and CCITT V.28 Standards

n

Failsafe - Output High for Open Input

n

LOW Power consumption

n

On chip noise filter

n

Available in SOIC Package

Connection Diagram

01110601

Order Number DS14C89AN, DS14C89AM,

See NS Package Number M14A, N14A

May 1998

© 2004 National Semiconductor Corporation

DS011106

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