QUADRUPLE RSĆ485 DIFFERENTIAL LINE RECEIVERS
SLLS456B − NOVEMBER 2000 − REVISED APRIL 2005
D Designed for TIA/EIA-485, TIA/EIA-422, and
ISO 8482 Applications
D Signaling Rate† Exceeding 50 Mbps
D Fail-Safe in Bus Short-Circuit, Open-Circuit,
and Idle-Bus Conditions
D ESD Protection on Bus Inputs
Exceeds 6 kV
D Common-Mode Bus Input Range
–7 V to 12 V
D Propagation Delay Times <16 ns
D Low Standby Power Consumption <20 µA
D Pin-Compatible Upgrade for AM26LS32,
DS96F173, LTC488, and SN75173
The SN65LBC173A and SN75LBC173A are
quadruple differential line receivers with 3-state
outputs, designed for TIA/EIA-485 (RS-485),
TIA/EIA-422 (RS-422), and ISO 8482 (Euro
These devices are optimized for balanced
multipoint bus communication at data rates up to
and exceeding 50 million bits per second. The
transmission media may be twisted-pair cables,
printed-circuit board traces, or backplanes. The
ultimate rate and distance of data transfer is
dependent upon the attenuation characteristics of
the media and the noise coupling to the
SN65LBC173A (Marked as 65LBC173A)
SN75LBC173A (Marked as 75LBC173A)
D or N PACKAGE
Each receiver operates over a wide range of positive and negative common-mode input voltages, and features
ESD protection to 6 kV, making it suitable for high-speed multipoint data transmission applications in harsh
environments. These devices are designed using LinBiCMOSt, facilitating low power consumption and
The G and G inputs provide enable control logic for either positive- or negative-logic enabling all four drivers.
When disabled or powered off, the receiver inputs present a high-impedance to the bus for reduced system
The SN75LBC173A is characterized for operation over the temperature range of 0°C to 70°C. The
SN65LBC173A is characterized over the temperature range from −40°C to 85°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.
LinBiCMOS is a trademark of Texas Instruments.
†The signaling rate of a line is the number of voltage transitions that are made per second expressed in the units bps (bits per second).
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.
Copyright 2001, Texas Instruments Incorporated
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