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uA9638C

DUAL HIGH-SPEED DIFFERENTIAL LINE DRIVER

SLLS112C − OCTOBER 1980 − REVISED APRIL 1994

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

D Meets or Exceeds ANSI Standard

EIA/TIA-422-B

D Operates From a Single 5-V Power Supply

D Drives Loads as Low as 50 Ω up

to 15 Mbps

D TTL- and CMOS-Input Compatibility

D Output Short-Circuit Protection

D Interchangeable With National

Semiconductor™ DS9638

description

The uA9638C is a dual high-speed differential line driver designed to meet ANSI Standard EIA/TIA-422-B. The

inputs are TTL and CMOS compatible and have input clamp diodes. Schottky-diode-clamped transistors are

used to minimize propagation delay time. This device operates from a single 5-V power supply and is supplied

in an 8-pin package.

The uA9638 provides the current needed to drive low-impedance loads at high speeds. Typically used with

twisted-pair cabling and differential receiver(s), base-band data transmission can be accomplished up to and

exceeding 15 Mbps in properly designed systems. The uA9637A dual line receiver is commonly used as the

receiver. For even faster switching speeds in the same pin configuration, see the SN75ALS191.

The uA9638C is characterized for operation from 0°C to 70°C.

logic symbol

†

This symbol is in accordance with ANSI/IEEE Std 91-1984 and

IEC Publication 617-12.

logic diagram

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

National Semiconductor is a trademark of National Semiconductor Corporation.

GND

D OR P PACKAGE

(TOP VIEW)

Summary of content (12 pages)

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uA9638C DUAL HIGH-SPEED DIFFERENTIAL LINE DRIVER SLLS112C − OCTOBER 1980 − REVISED APRIL 1994 D Meets or Exceeds ANSI Standard D D D D D D OR P PACKAGE (TOP VIEW) EIA/ TIA-422-B Operates From a Single 5-V Power Supply Drives Loads as Low as 50 Ω up to 15 Mbps TTL- and CMOS-Input Compatibility Output Short-Circuit Protection Interchangeable With National Semiconductor™ DS9638 VCC 1A 2A GND 1 8 2 7 3 6 4 5 1Y 1Z 2Y 2Z description The uA9638C is a dual high-speed differential line driver designed
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uA9638C DUAL HIGH-SPEED DIFFERENTIAL LINE DRIVER SLLS112C − OCTOBER 1980 − REVISED APRIL 1994 schematics of inputs and outputs EQUIVALENT OF EACH INPUT TYPICAL OF ALL OUTPUTS VCC VCC 4 kΩ NOM Input 9.6 Ω NOM Output GND absolute maximum ratings over operating free-air temperature range (unless otherwise noted)† Supply voltage range, VCC (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to 7 V Input voltage range, VI . . . . . . . . . . . .
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uA9638C DUAL HIGH-SPEED DIFFERENTIAL LINE DRIVER SLLS112C − OCTOBER 1980 − REVISED APRIL 1994 electrical characteristics over operating free-air temperature range (unless otherwise noted) PARAMETER VIK MIN TYP† MAX UNIT −1 −1.2 V IOH = − 10 mA 2.5 3.5 IOH = − 40 mA 2 TEST CONDITIONS Input clamp voltage VCC = 4.75 V, II = − 18 mA VOH High level output voltage High-level VCC = 4.75 V, VIL = 0.8 V VIH = 2 V, VOL Low level output voltage Low-level VCC = 4.
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uA9638C DUAL HIGH-SPEED DIFFERENTIAL LINE DRIVER SLLS112C − OCTOBER 1980 − REVISED APRIL 1994 PARAMETER MEASUREMENT INFORMATION 50 Ω VOD2 Input VOC 50 Ω Figure 1. Differential and Common-Mode Output Voltages 3V Input 1.5 V 1.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.com 12-Dec-2011 continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.
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PACKAGE MATERIALS INFORMATION www.ti.com 19-Mar-2008 TAPE AND REEL INFORMATION *All dimensions are nominal Device UA9638CDR Package Package Pins Type Drawing SOIC D 8 SPQ Reel Reel Diameter Width (mm) W1 (mm) 2500 330.0 12.4 Pack Materials-Page 1 A0 (mm) B0 (mm) K0 (mm) P1 (mm) 6.4 5.2 2.1 8.0 W Pin1 (mm) Quadrant 12.
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PACKAGE MATERIALS INFORMATION www.ti.com 19-Mar-2008 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) UA9638CDR SOIC D 8 2500 340.5 338.1 20.
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