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ManualsBrandsTEXAS INSTRUMENTS ManualsInterface ICsInterface IC - receivers RS422, RS423, RS485 0/4 SOIC 16 N
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SLLS170E − OCTOBER 1993 − REVISED AUGUST 2000
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
D Meets or Exceeds the Requirements of
ANSI Standards EIA/TIA-422-B,
EIA/TIA-423-B, RS-485, and ITU
Recommendations V.10 and V.11.
D Designed to Operate With Pulse Durations
as Short as 20 ns
D Designed for Multipoint Bus Transmission
on Long Bus Lines in Noisy Environments
D Input Sensitivity . . . ±200 mV
D Low-Power Consumption...20 mA Max
D Open-Circuit Fail-Safe Design
D Pin Compatible With SN75173 and
AM26LS32
description
The SN65LBC173 and SN75LBC173 are monolithic quadruple differential line receivers with 3-state outputs.
Both are designed to meet the requirements of the ANSI standards EIA/TIA-422-B, EIA/TIA-423-B, RS-485,
and ITU Recommendations V.10 and V.11. The devices are optimized for balanced multipoint bus transmission
at data rates up to and exceeding 10 million bits per second. The four receivers share two ORed enable inputs,
one active when high, the other active when low.
Each receiver features 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 −7 V. Fail-safe design ensures that
if the inputs are open circuited, the output is always high. Both devices are designed using the Texas Instruments
proprietary LinBiCMOS technology that provides low power consumption, high switching speeds, and
robustness.
These devices offer optimum performance when used with the SN75LBC172 or SN75LBC174 quadruple line
drivers. The SN65LBC173 and SN75LBC173 are available in the 16-pin DIP (N) and SOIC (D) packages.
The SN65LBC173 is characterized over the industrial temperature range of −40°C to 85°C. The SN75LBC173
is characterized for operation over the commercial temperature range of 0°C to 70°C.
FUNCTION TABLE
(each receiver)
DIFFERENTIAL INPUTS
ENABLES
OUTPUT
DIFFERENTIAL INPUTS
A−B
G G
OUTPUT
Y
V
ID
≥ 0.2 V
H
X
X
L
H
H
−0.2 V < V
ID
< 0.2 V
H
X
X
L
?
?
V
ID
≤ −0.2 V
H
X
X
L
L
L
X L H Z
Open Circuit
H
X
X
L
H
H
H = high level, L = low level, X = irrelevant,
Z = high impedance (off), ? = indeterminate
LinBiCMOS is a trademark of Texas Instruments.
Copyright 2000, Texas Instruments Incorporated
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1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
1B
1A
1Y
G
2Y
2A
2B
GND
V
CC
4B
4A
4Y
G
3Y
3A
3B
D OR N PACKAGE
(TOP VIEW)
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.

Summary of content (14 pages)