SN55173, SN65173, SN75173
QUADRUPLE DIFFERENTIAL LINE RECEIVERS
SLLS144E – OCTOBER 1980 – REVISED APRIL 2000
SN55173 . . . J PACKAGE
SN65173, SN75173 . . . D OR N PACKAGE
(TOP VIEW)
Meet or Exceed the Requirements of
TIA/EIA-422-B, TIA/EIA-423-B, and
TIA/EIA-485-A and ITU Recommendations
V.10, V.11, X.26, and X.27
1B
1A
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
V
CC
Designed for Multipoint Bus Transmission
on Long Bus Lines in Noisy Environments
4B
4A
4Y
G
1Y
3-State Outputs
G
2Y
Common-Mode Input Voltage Range of
–12 V to 12 V
2A
3Y
3A
3B
2B
Input Sensitivity . . . ±200 mV
Input Hysteresis . . . 50 mV Typ
High Input Impedance . . . 12 kΩ Min
Operate From Single 5-V Supply
Low Power Requirements
GND
SN55173 . . . FK PACKAGE
(TOP VIEW)
Pin-to-Pin Replacement for AM26LS32
description
3
2
1
20 19
18
4A
4Y
NC
G
1Y
G
4
5
6
7
8
17
16
15
14
The SN55173, SN65173, and SN75173 are
monolithic quadruple differential line receivers
with 3-state outputs. They are designed to meet
NC
2Y
2A
3Y
the
requirements
of
TIA/EIA-422-B,
9 10 11 12 13
TIA/EIA-423-B, TIA/EIA-485-A, and several ITU
recommendations. The standards are for
balanced multipoint bus transmission at rates up
to 10 megabits per second. The four receivers
share two OR enable inputs, one active when
high, the other active when low. These devices
feature high input impedance, input hysteresis for
increased noise immunity, and input sensitivity of
±200 mV over a common-mode input voltage
range of –12 V to 12 V. Fail-safe design specifies
thatiftheinputsareopencircuited, theoutputsare
always high. The SN65173 and SN75173 are
designed for optimum performance when used
with the SN75172 or SN75174 quad differential
line drivers.
NC–No internal connection
THE SN55173 IS NOT RECOMMENDED
FOR NEW DESIGNS.
The SN55173 is characterized over the full military temperature range of –55°C to 125°C. The SN65173 is
characterized for operation from –40°C to 85°C. The SN75173 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.
Copyright 2000, Texas Instruments Incorporated
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.
1
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