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SN75ALS191

DUAL DIFFERENTIAL LINE DRIVER

SLLS032B − DECEMBER 1987 − REVISED MAY 1995

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

D Meets or Exceeds the Requirements of

ANSI Standard EIA/TIA-422-B and ITU

Recommendation V.11

D Designed to Operate at 20 Mbaud or Higher

D TTL-and CMOS-Input Compatibility

D Single 5-V Supply Operation

D Output Short-Circuit Protection

D Improved Replacement for the μA9638

description

The SN75ALS191 is a dual, high-speed, differential line driver designed to meet ANSI Standard EIA/TIA-422-B

and ITU Recommendation V.11. The inputs are TTL- and CMOS-compatible and have input clamp diodes.

Schottky-diode-clamped transistors minimize propagation delay time. This device operates from a single 5-V

power supply and is supplied in eight-pin packages.

The SN75ALS191 is characterized for operation from 0°C to 70°C.

FUNCTION TABLE

(each driver)

INPUTS

OUTPUTS

INPUTS

Y Z

H H L

L L H

H = high level, L = low level,

Z = high impedance

logic symbol

†

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

and IEC Publication 617-12.

logic diagram (positive logic)

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.

GND

D OR P PACKAGE

(TOP VIEW)

Summary of content (14 pages)

PAGE 1
SN75ALS191 DUAL DIFFERENTIAL LINE DRIVER SLLS032B − DECEMBER 1987 − REVISED MAY 1995 D Meets or Exceeds the Requirements of D D D D D D OR P PACKAGE (TOP VIEW) ANSI Standard EIA/TIA-422-B and ITU Recommendation V.
PAGE 2
SN75ALS191 DUAL DIFFERENTIAL LINE DRIVER SLLS032B − DECEMBER 1987 − REVISED MAY 1995 schematics of inputs and outputs EQUIVALENT OF EACH INPUT TYPICAL OF ALL OUTPUTS VCC VCC 40 kΩ NOM Input 10 Ω Output GND absolute maximum ratings over operating free-air temperature range (unless otherwise noted)† Supply voltage, VCC (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V Input voltage, VI . . . . . . . . . . . . . . .
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SN75ALS191 DUAL DIFFERENTIAL LINE DRIVER SLLS032B − DECEMBER 1987 − REVISED MAY 1995 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 3.3 IOH = − 40 mA 2 TEST CONDITIONS Input clamp voltage VCC = 4.75 V, II = −18 mA VOH Hi h l l output t t voltage lt High-level VCC = 4.75 V, VIL = 0.8 V VIH = 2 V, VOL Low-level output voltage VCC = 4.
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SN75ALS191 DUAL DIFFERENTIAL LINE DRIVER SLLS032B − DECEMBER 1987 − REVISED MAY 1995 PARAMETER MEASUREMENT INFORMATION 50 Ω Input VOD2 50 Ω VOC Figure 1. Differential and Common-Mode Output Voltages 3V Input 1.5 V 1.5 V Y Output 0V td(OD) td(OD) CL RL = 100 Ω Generator (see Note A) 50 Ω 90% Differential Output 10% 10% tt(OD) Z Output CL CL = 15 pF (see Note B) 90% tt(OD) VOH Y Output 50% Skew 50% VOL Skew VOH Z Output TEST CIRCUIT 50% 50% VOLTAGE WAVEFORMS NOTES: A.
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PACKAGE OPTION ADDENDUM www.ti.
PAGE 6
PACKAGE OPTION ADDENDUM www.ti.com 4-Jun-2007 to Customer on an annual basis.
PAGE 7
PACKAGE MATERIALS INFORMATION www.ti.com 14-Jul-2012 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant SN75ALS191DR SOIC D 8 2500 330.0 12.4 6.4 5.2 2.1 8.0 12.0 Q1 SN75ALS191PSR SO PS 8 2000 330.0 16.4 8.2 6.6 2.5 12.0 16.
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PACKAGE MATERIALS INFORMATION www.ti.com 14-Jul-2012 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) SN75ALS191DR SN75ALS191PSR SOIC D 8 2500 340.5 338.1 20.6 SO PS 8 2000 367.0 367.0 38.
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