SN65ALS1176
DIFFERENTIAL BUS TRANSCEIVER
SLLS295A – APRIL 1998 – REVISED DECEMBER 1999
†
D
OR P PACKAGE
(TOP VIEW)
Meets or Exceeds the Requirements of
TIA/EIA-422-B, TIA/EIA-485-A, and ITU
Recommendations V.11 and X.27
1
2
3
4
8
7
6
5
R
RE
DE
D
V
B
A
CC
Recommended for PROFIBUS Applications
Operates at Data Rates up to 35 MBaud
Operating Temperature Range
. . . –25°C to 85°C
GND
†
Designed for Multipoint Transmission on
Long Bus Lines in Noisy Environments
The D package is available taped and
reeled. Add the suffix R to the device
type (e.g., SN65ALS1176DR).
Low Supply-Current Requirement
. . . 30 mA Max
Wide Positive and Negative Input/Output
Bus-Voltage Ranges
Thermal-Shutdown Protection
Driver Positive- and Negative-Current
Limiting
Receiver Input Hysteresis
Glitch-Free Power-Up and Power-Down
Protection
Receiver Open-Circuit Fail-Safe Design
Package Options Include Plastic
Small-Outline (D) Package and (P) DIPs
description
The SN65ALS1176 differential bus transceiver is designed for bidirectional data communication on multipoint
bus transmission lines. It is designed for balanced transmissionlinesandmeetsTIA/EIA-422-B, TIA/EIA-485-A,
and ITU Recommendations V.11 and X.27.
The SN65ALS1176 combines a 3-state differential line driver and a differential input line receiver, both of which
operate from a single 5-V power supply. The driver and receiver have active-high and active-low enables,
respectively, that can be connected together externally to function as a direction control. The driver differential
outputs and the receiver differential inputs are connected internally to form a differential input/output (I/O) bus
portthatisdesignedtoofferminimumloadingtothebuswhenthedriverisdisabledorV =0. Thisportfeatures
CC
wide positive and negative common-mode voltage ranges, making the device suitable for party-line
applications.
The SN65ALS1176 is characterized for operation from –25°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.
Copyright 1999, 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
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265