Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsInterface ICsInterface IC - drivers RS422, RS485 4/0 PDIP 16

SN75ALS174A

QUADRUPLE DIFFERENTIAL LINE DRIVER

SLLS122E – JULY 1991 – REVISED APRIL 1998

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

Meets or Exceeds the Requirements of

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

High-Speed Advanced Low-Power Schottky

Circuitry

Designed for up to 20-Mbit/s 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

Functionally Interchangeable With SN75174

description

The SN75ALS174A is a quadruple line driver with

3-state differential outputs. It is designed to meet

the requirements of ANSI Standards

EIA/TIA-422-B and RS-485. This device is

optimized for balanced multipoint bus

transmission at rates of up to 20 Mbit/s. Each

driver features wide positive and negative

common-mode output voltage ranges that make

them suitable for party-line applications in noisy

environments.

The SN75ALS174A 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 SN75ALS174A is characterized for operation from 0°C to 70°C.

FUNCTION TABLE

(each driver)

INPUT

ENABLES

OUTPUTS

ENABLES

Y Z

H H H L

L H L H

X L Z Z

H = high level, L = low level, X = irrelevant,

Z = high impedance (off)

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)

1,2EN

GND

3,4EN

1,2EN

GND

3,4EN

N PACKAGE

(TOP VIEW)

NC – No internal connection

Summary of content (14 pages)

PAGE 1
SN75ALS174A QUADRUPLE DIFFERENTIAL LINE DRIVER SLLS122E – JULY 1991 – REVISED APRIL 1998 D D D D D D D D D D N PACKAGE (TOP VIEW) Meets or Exceeds the Requirements of ANSI EIA/TIA-422-B and RS-485 High-Speed Advanced Low-Power Schottky Circuitry Designed for up to 20-Mbit/s 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 Drive
PAGE 2
SN75ALS174A QUADRUPLE DIFFERENTIAL LINE DRIVER SLLS122E – JULY 1991 – REVISED APRIL 1998 logic symbol† 1,2EN 4 EN 2 1A 1 3 6 2A 3,4EN 7 5 12 9 11 14 4A 15 13 † This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12. Pin numbers shown are for the N package. logic diagram (positive logic) 1,2EN 4 2 1A 2A 3,4EN 1 7 3 6 5 3A 4A 1Y 1Z 2Y 2Z 12 10 9 15 11 14 13 Pin numbers shown are for the N package.
PAGE 3
SN75ALS174A QUADRUPLE DIFFERENTIAL LINE DRIVER SLLS122E – JULY 1991 – 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 . . . . . . . . . . . . . . . .
PAGE 4
SN75ALS174A QUADRUPLE DIFFERENTIAL LINE DRIVER SLLS122E – JULY 1991 – REVISED APRIL 1998 electrical characteristics over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted) PARAMETER TEST CONDITIONS VIK VO Input clamp voltage Output voltage II = –18 mA IO = 0 |VOD1| Differential output voltage IO = 0 |VOD2| RL = 100 Ω Differential output voltage g MIN See Figure g 1 MAX UNIT –1.5 V 0 6 V 1.5 6 V 1/2VOD1 or 2‡ RL = 54 Ω 1.5 1.
PAGE 5
SN75ALS174A QUADRUPLE DIFFERENTIAL LINE DRIVER SLLS122E – JULY 1991 – REVISED APRIL 1998 PARAMETER MEASUREMENT INFORMATION RL 2 VOD2 RL 2 VOC Figure 1. Differential and Common-Mode Output Voltages 3V Y CL Generator (see Note A) 50 Ω Input RL = 54 Ω 1.5 V td(ODH) Z 3V 1.5 V 0V td(ODL) Output Z CL = 50 pF (see Note B) Output Y TEST CIRCUIT VOLTAGE WAVEFORMS NOTES: A.
PAGE 6
SN75ALS174A QUADRUPLE DIFFERENTIAL LINE DRIVER SLLS122E – JULY 1991 – 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 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.
PAGE 7
PACKAGE OPTION ADDENDUM www.ti.
PAGE 8
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.
PAGE 9
PACKAGE MATERIALS INFORMATION www.ti.com 3-Jan-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device SN75ALS174ADWR Package Package Pins Type Drawing SOIC DW 20 SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) 2000 330.0 24.4 Pack Materials-Page 1 10.8 B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant 13.3 2.7 12.0 24.
PAGE 10
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) SN75ALS174ADWR SOIC DW 20 2000 367.0 367.0 45.
PAGE 11
PAGE 12
PAGE 13
PAGE 14
IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.