SN55LBC176, SN65LBC176, SN65LBC176Q, SN75LBC176
DIFFERENTIAL BUS TRANSCEIVERS
SLLS067G − AUGUST 1990 − REVISED APRIL 2006
D
Bidirectional Transceiver
D
Meets or Exceeds the Requirements of
D
D
D
D
D
D
D
D
D
D
D
D
D
D
ANSI Standard TIA/EIA−485−A and
ISO 8482:1987(E)
High-Speed Low-Power LinBiCMOS
Circuitry
Designed for High-Speed Operation in Both
Serial and Parallel Applications
Low Skew
Designed for Multipoint Transmission on
Long Bus Lines in Noisy Environments
Very Low Disabled Supply Current . . . 200
µA
Maximum
Wide Positive and Negative Input/Output
Bus Voltage Ranges
Thermal-Shutdown Protection
Driver Positive-and Negative-Current
Limiting
Open-Circuit Failsafe Receiver Design
Receiver Input Sensitivity . . .
±
200 mV Max
Receiver Input Hysteresis . . . 50 mV Typ
Operates From a Single 5-V Supply
Glitch-Free Power-Up and Power-Down
Protection
Available in Q-Temp Automotive
HighRel Automotive Applications
Configuration Control / Print Support
Qualification to Automotive Standards
D, JG, OR P PACKAGE
(TOP VIEW)
R
RE
DE
D
1
2
3
4
8
7
6
5
V
CC
B
A
GND
FK PACKAGE
(TOP VIEW)
NC
RE
NC
DE
NC
4
5
6
7
8
3 2 1 20 19
18
17
16
15
14
9 10 11 12 13
NC
R
NC
VCC
NC
NC
B
NC
A
NC
NC −No internal connection
Function Tables
DRIVER
INPUT
D
H
L
X
ENABLE
DE
H
H
L
OUTPUTS
A
B
H
L
L
H
Z
Z
description
The
SN55LBC176,
SN65LBC176,
SN65LBC176Q, and SN75LBC176 differential
bus transceivers are monolithic, integrated
circuits designed for bidirectional data communi-
cation on multipoint bus-transmission lines. They
are designed for balanced transmission lines and
meet ANSI Standard TIA/EIA−485−A (RS-485)
and ISO 8482:1987(E).
NC
D
NC
GND
NC
RECEIVER
DIFFERENTIAL INPUTS
VID = VIA −VIB
VID
≥
0.2 V
−0.2 V < VID < 0.2 V
VID
≤
− 0.2 V
X
Open
H = high level,
X = irrelevant,
ENABLE
RE
L
L
L
H
L
OUTPUT
R
H
?
L
Z
H
L = low level, ? = indeterminate,
Z = high impedance (off)
Copyright
2000−2006, Texas Instruments Incorporated
On products compliant to MIL PRF 38535, all parameters are tested
unless otherwise noted. On all other products, production
processing does not necessarily include testing of all parameters.
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 and LinASIC are trademarks of 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.
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