ST26C32

QUAD RS-422, RS-423 CMOS

Differential Line Receiver

Rev. 1.01

E1991

EXAR Corporation, 48720 Kato Road, Fremont, CA 94538

z (510) 668-7000 z FAX (510) 668-7017

1

June 1997–3

FEATURES

D Pin-to-Pin Compatible with National DS26C32C

D Low Power CMOS Design

D Three-State Outputs with Enable Pin

D Meets the EIA RS-422 Requirements

D Low Propagation Delays

D High Speed

GENERAL DESCRIPTION

The ST26C32 is a CMOS quad differential line receiver

designed to meet the standard RS-422, RS-423

requirements. The ST26C32 has an input sensitivity of

200mv over the common mode input voltage range of

±7V. To improve noise margin and output stability for slow

changing input signal, special hysteresis is built in the

ST26C32 circuit.

The ST26C32 is a high speed line receiver designed to

operate with MFM / RLL controllers and hard disk drives

as well as RS-422, and RS-423 differential applications.

ST26C32 provides TTL compatible outputs to interface

with standard 74LS and CMOS design environments.

ST26C32 is suitable for low power 5V operation.

ORDERING INFORMATION

Part No.

Package

Operating

Temperature Range

ST26C32CP16

16 Lead 300 Mil PDIP

0

°C to +70°C

ST26C32CF16

16 Lead 150 Mil JEDEC SOIC

0

°C to +70°C

ST26C32IP16

16 Lead 300 Mil PDIP

-40

°C to +85°C

ST26C32IF16

16 Lead 150 Mil JEDEC SOIC

-40

°C to +85°C

Figure 1. Block Diagram

INPUT D-

INPUT D+

OUTPUT D

-ENABLE

OUTPUT C

INPUT C+

INPUT C-

INPUT A-

INPUT A+

OUTPUT A

ENABLE

INPUT B-

INPUT B+

OUTPUT B