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SN75ALS172A

QUADRUPLE DIFFERENTIAL LINE DRIVER

SLLS121D – AUGUST 1990 – REVISED APRIL 1998

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

Meets or Exceeds ANSI Standards

EIA/TIA-422-B and RS-485 and ITU

Recommendation V.11

High-Speed Advanced Low-Power Schottky

Circuitry

Designed for 20-MBaud Operation in Both

Serial and Parallel Applications

Designed for Multipoint Transmission on

Long Bus Lines in Noisy Environments

Low Supply-Current Requirements:

55 mA Max

Wide Positive and Negative Input/Output

Bus-Voltage Ranges

Driver Output Capacity...±60 mA

Thermal Shutdown Protection

Driver Positive and Negative Current

Limiting

Logically Interchangeable With SN75172

description

The SN75ALS172A comprises four line drivers

with 3-state differential outputs. They are

designed to meet the requirements of ANSI

Standards EIA/TIA-422-B and RS-485 and ITU

Recommendation V.11. This device is optimized

for balanced multipoint bus transmission at rates

of up to 20 Mbaud. Each driver features wide

positive and negative common-mode output

voltage ranges, making it suitable for party-line

applications in noisy environments.

The SN75ALS172A provides positive- and negative-current limiting and thermal shutdown for protection from

line-fault conditions on the transmission bus line. Shutdown occurs at a junction temperature of

approximately 150°C.

The SN75ALS172A is characterized for operation from 0°C to 70°C.

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.

DW PACKAGE

(TOP VIEW)

GND

N PACKAGE

(TOP VIEW)

NC – No internal connection

Summary of content (14 pages)

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SN75ALS172A QUADRUPLE DIFFERENTIAL LINE DRIVER SLLS121D – AUGUST 1990 – REVISED APRIL 1998 D D D D D D D D D D N PACKAGE (TOP VIEW) Meets or Exceeds ANSI Standards EIA/TIA-422-B and RS-485 and ITU Recommendation V.
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SN75ALS172A QUADRUPLE DIFFERENTIAL LINE DRIVER SLLS121D – AUGUST 1990 – REVISED APRIL 1998 FUNCTION TABLE (each driver) INPUT A ENABLES OUTPUTS G G Y H H X H Z L L H X L H H X L H L L X L L H X L H Z Z H = high level, L = low level, X = irrelevant, Z = high impedance (off) logic symbol† G G 4 ≥1 12 EN 2 1A 1 3 6 2A 7 5 10 3A 9 11 14 4A 15 13 † This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
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SN75ALS172A QUADRUPLE DIFFERENTIAL LINE DRIVER SLLS121D – AUGUST 1990 – REVISED APRIL 1998 schematics of inputs and outputs EQUIVALENT OF EACH INPUT TYPICAL OF ALL OUTPUTS VCC VCC 35 kΩ NOM Input 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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SN75ALS172A QUADRUPLE DIFFERENTIAL LINE DRIVER SLLS121D – AUGUST 1990 – REVISED APRIL 1998 electrical characteristics over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted) PARAMETER VIK VO Input clamp voltage |VOD1| Differential output voltage Output voltage TEST CONDITIONS MIN II = –18 mA IO = 0 IO = 0 VCC = 5 V, RL = 100 Ω, RL = 54 Ω, See Figure 1 |VOD2| Differential output voltage |VOD3| Differential output voltage See Note 2 ∆|VOD| Change
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SN75ALS172A QUADRUPLE DIFFERENTIAL LINE DRIVER SLLS121D – AUGUST 1990 – REVISED APRIL 1998 PARAMETER MEASUREMENT INFORMATION RL 2 VOD2 RL 2 VOC Figure 1. Differential and Common-Mode Output Voltages Y CL Generator (see Note A) 50 Ω 3V 3V RL = 54 Ω Input 1.5 V 1.5 V 0V Z td(ODL) td(ODH) CL = 50 pF (see Note B) Output Z Output Y TEST CIRCUIT VOLTAGE WAVEFORMS NOTES: A.
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SN75ALS172A QUADRUPLE DIFFERENTIAL LINE DRIVER SLLS121D – AUGUST 1990 – REVISED APRIL 1998 PARAMETER MEASUREMENT INFORMATION 5V RL = 110 Ω S1 0 V or 3 V Generator (see Note A) Output 3V Input 1.5 V 1.5 V 0V tPZL CL = 50 pF (see Note B) 50 Ω 2.3 V Output tPLZ 5V VOL 3V (see Note C) 0.5 V TEST CIRCUIT VOLTAGE WAVEFORMS NOTES: A. The input pulse is supplied by a generator having the following characteristics: PRR = 1 MHz, ZO = 50 Ω, duty cycle = 50%, tf ≤ 5 ns, tr ≤ 5 ns. B.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.com 14-May-2013 (4) Multiple Top-Side Markings will be inside parentheses. Only one Top-Side Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation of the previous line and the two combined represent the entire Top-Side Marking for that device. Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided.
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PACKAGE MATERIALS INFORMATION www.ti.com 3-Jan-2013 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 SN75ALS172ADWR SOIC DW 20 2000 330.0 24.4 10.8 13.3 2.7 12.0 24.0 Q1 SN75ALS172ADWR SOIC DW 20 2000 330.0 24.4 10.8 13.0 2.7 12.0 24.
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PACKAGE MATERIALS INFORMATION www.ti.com 3-Jan-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) SN75ALS172ADWR SOIC DW 20 2000 367.0 367.0 45.0 SN75ALS172ADWR SOIC DW 20 2000 367.0 367.0 45.
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