DS9638

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SNLS389D – MAY 1998 – REVISED APRIL 2013

DS9638 RS-422 Dual High Speed Differential Line Driver

Check for Samples: DS9638

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FEATURES

DESCRIPTION

The DS9638 is a Schottky, TTL compatible, dual

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•

Single 5V Supply

differential line driver designed specifically to meet

•

Schottky Technology

the

EIA

Standard

RS-422

specifications.

It

is

•

TTL and CMOS Compatible Inputs

designed to provide unipolar differential drive to

twisted pair or parallel wire transmission lines. The

•

Output Short Circuit Protection

inputs are TTL compatible. The outputs are similar to

•

Input Clamp Diodes

totem pole TTL outputs, with active pull-up and pull-

•

Complementary Outputs

down. The device features a short circuit protected

active pull-up with low output impedance and is

•

Minimum Output Skew (<1.0 ns typical)

specified to drive 50

Ω transmission lines at high

•

50 mA Output Drive Capability for 50

Ω

speed. The mini-DIP provides high package density.

Transmission Lines

•

Meets EIA RS-422 Specifications

•

Propagation Delay of Less Than 10 ns

•

“Glitchless” Differential Output

•

Variations (<2.0 ns typical) (See Figure 4 )

•

Extended Temperature Range

Connection Diagram

Figure 1. 8-Lead PDIP or CDIP or SOIC (Top View)

See P or NAB0008A or D Package

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Copyright © 1998–2013, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

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