SN75ALS174ADWR Datasheet, PDF (1/14 Pages) Texas Instruments – QUADRUPLE DIFFERENTIAL LINE DRIVER

SN75ALS174A
QUADRUPLE DIFFERENTIAL LINE DRIVER
SLLS122E – JULY 1991 – REVISED APRIL 1998
D Meets or Exceeds the Requirements of
ANSI EIA/TIA-422-B and RS-485
D High-Speed Advanced Low-Power Schottky
Circuitry
D Designed for up to 20-Mbit/s Operation in
Both Serial and Parallel Applications
D Designed for Multipoint Transmission on
Long Bus Lines in Noisy Environments
D Low Supply Current Requirements
55 mA Max
D Wide Positive and Negative Input/Output
Bus Voltage Ranges
D Driver Output Capacity . . . ±60 mA
D Thermal-Shutdown Protection
D Driver Positive- and Negative-Current
Limiting
D 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.
N PACKAGE
(TOP VIEW)
1A 1
1Y 2
1Z 3
1,2EN 4
2Z 5
2Y 6
2A 7
GND 8
16 V_CC
15 4A
14 4Y
13 4Z
12 3,4EN
11 3Z
10 3Y
9 3A
DW PACKAGE
(TOP VIEW)
1A ₁
1Y 2
NC 3
1Z 4
1,2EN 5
2Z 6
NC 7
2Y 8
2A 9
GND 10
20 ^V_CC
19 4A
18 4Y
17 NC
16 4Z
15 3,4EN
14 3Z
13 NC
12 3Y
11 3A
NC – No internal connection
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
A
ENABLES
OUTPUTS
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)
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.
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.
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265
Copyright © 1998, Texas Instruments Incorporated
1