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DS9638

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SNLS389D –MAY 1998–REVISED APRIL 2013

DS9638 RS-422 Dual High Speed Differential Line Driver

Check for Samples: DS9638

FEATURES

DESCRIPTION

The DS9638 is a Schottky, TTL compatible, dual

• 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 50Ω transmission lines at high

• 50 mA Output Drive Capability for 50Ω

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

• Delay Time Stable with V

and Temperature

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

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.

2All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

Summary of content (12 pages)

PAGE 1
DS9638 www.ti.com SNLS389D – MAY 1998 – REVISED APRIL 2013 DS9638 RS-422 Dual High Speed Differential Line Driver Check for Samples: DS9638 FEATURES DESCRIPTION • • • • • • • • The DS9638 is a Schottky, TTL compatible, dual differential line driver designed specifically to meet the EIA Standard RS-422 specifications. It is designed to provide unipolar differential drive to twisted pair or parallel wire transmission lines. The inputs are TTL compatible.
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DS9638 SNLS389D – MAY 1998 – REVISED APRIL 2013 www.ti.com These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates. Absolute Maximum Ratings (1) (2) Storage Temperature Range Lead Temperature Ceramic DIP −65°C to +175°C Molded DIP and SO-8 −65°C to +150°C CDIP (Soldering, 60 sec.) 300°C PDIP (Soldering, 10 sec.
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DS9638 www.ti.com SNLS389D – MAY 1998 – REVISED APRIL 2013 Electrical Characteristics (1) (2) Over recommended operating temperature and supply voltage ranges, unless otherwise specified Symbol Parameter VIH Input Voltage HIGH VIL Input Voltage LOW Conditions Min Typ Max Units 2.0 V 0°C to +70°C 0.8 −55°C to +125°C 0.5 VIC Input Clamp Voltage V CC = Min, II = −18 mA VOH Output Voltage HIGH VCC = Min, VIH = VIH Min, VIL = VIL Max −1.0 IOH = −10 mA 2.5 IOH = −40 mA 2.0 V −1.
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DS9638 SNLS389D – MAY 1998 – REVISED APRIL 2013 www.ti.com Figure 2. Equivalent Circuit DC Test Circuit Figure 3. Terminated Output Voltage and Output Balance (1) The pulse generator has the following characteristics: CL includes probe and jig capacitance. PRR = 500 kHz, tW = 100 ns, tr ≤ 5.0 ns, ZO = 50Ω. Figure 4.
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DS9638 www.ti.com SNLS389D – MAY 1998 – REVISED APRIL 2013 Typical Characteristics Figure 5. Typical Delay Characteristics (a) Figure 6.
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DS9638 SNLS389D – MAY 1998 – REVISED APRIL 2013 www.ti.com REVISION HISTORY Changes from Revision C (April 2013) to Revision D • 6 Page Changed layout of National Data Sheet to TI format ............................................................................................................
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.com 1-Nov-2013 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 11-Oct-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device DS9638CMX/NOPB Package Package Pins Type Drawing SOIC D 8 SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) 2500 330.0 12.4 Pack Materials-Page 1 6.5 B0 (mm) K0 (mm) P1 (mm) 5.4 2.0 8.0 W Pin1 (mm) Quadrant 12.
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PACKAGE MATERIALS INFORMATION www.ti.com 11-Oct-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) DS9638CMX/NOPB SOIC D 8 2500 367.0 367.0 35.
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