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75ALS172A Datasheet Preview

75ALS172A Datasheet

QUADRUPLE DIFFERENTIAL LINE DRIVER

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SN75ALS172A
QUADRUPLE DIFFERENTIAL LINE DRIVER
SLLS121D – AUGUST 1990 – REVISED APRIL 1998
D Meets or Exceeds ANSI Standards
EIA/TIA-422-B and RS-485 and ITU
Recommendation V.11
D High-Speed Advanced Low-Power Schottky
Circuitry
D Designed for 20-MBaud 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 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.
N PACKAGE
(TOP VIEW)
1A 1
1Y 2
1Z 3
G4
2Z 5
2Y 6
2A 7
GND 8
16 VCC
15 4A
14 4Y
13 4Z
12 G
11 3Z
10 3Y
9 3A
DW PACKAGE
(TOP VIEW)
1A 1
1Y 2
NC 3
1Z 4
G5
2Z 6
NC 7
2Y 8
2A 9
GND 10
20 VCC
19 4A
18 4Y
17 NC
16 4Z
15 G
14 3Z
13 NC
12 3Y
11 3A
NC – No internal connection
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.
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




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75ALS172A Datasheet Preview

75ALS172A Datasheet

QUADRUPLE DIFFERENTIAL LINE DRIVER

No Preview Available !

SN75ALS172A
QUADRUPLE DIFFERENTIAL LINE DRIVER
SLLS121D – AUGUST 1990 – REVISED APRIL 1998
FUNCTION TABLE
(each driver)
INPUT
A
ENABLES
G
G
OUTPUTS
Y
Z
H
H
X
H
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
4
G
12
G
1
1A
7
2A
9
3A
15
4A
1
EN
2
1Y
3
1Z
6
2Y
5
2Z
10
3Y
11
3Z
14
4Y
13
4Z
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)
4
G
12
G
1
1A
7
2A
9
3A
Pin numbers shown are for the N package.
15
4A
2
1Y
3
1Z
6
2Y
5
2Z
10
3Y
11
3Z
14
4Y
13
4Z
2
POST OFFICE BOX 655303 DALLAS, TEXAS 75265


Part Number 75ALS172A
Description QUADRUPLE DIFFERENTIAL LINE DRIVER
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