Texas Instruments SNJ55LBC173FK, SNJ55LBC173J, SNJ55LBC173W Datasheet
SN55LBC173
QUADRUPLE LOW-POWER DIFFERENTIAL RECEIVER
SGLS081 – MARCH 1995
D
Meets EIA Standards RS-422-A, RS-423-A,
RS-485, and CCITT 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 SN55LBC173 is a monolithic quadruple
differential line receiver with 3-state outputs and is
designed to meet the requirements of the EIA
standards RS-422-A, RS-423-A, RS-485, and
CCITT V .1 1. This device is 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. The SN55LBC173 is
designed using the T exas Instruments proprietary
LinBiCMOStechnology that provides low power
consumption, high switching speeds, and
robustness.
J OR W PACKAGE
(TOP VIEW)
1
2
3
4
5
6
7
8
GND
NC
16
15
14
13
12
11
10
9
CC
V
3B
1B
1A
1Y
G
2Y
2A
2B
GND
FK PACKAGE
(TOP VIEW)
1A1BNC
1Y
4
G
5
NC
6
2Y
7
2A
8
2B
NC – No internal connection
V
CC
4B
4A
4Y
G
3Y
3A
3B
4B
1920132
4A
18
4Y
17
NC
16
G
15
3Y
14
1312119 10
3A
This device offers optimum performance when used with the SN55LBC172M quadruple line driver. The
SN55LBC173 is available in the 16-pin CDIP (J), the 16-pin CPAK (W), or the 20-pin LCCC (FK) packages.
The SN55LBC173 is characterized over the military temperature range of –55°C to 125°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 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.
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
Copyright 1995, Texas Instruments Incorporated
1
SN55LBC173
QUADRUPLE LOW-POWER DIFFERENTIAL RECEIVER
SGLS081 – MARCH 1995
FUNCTION TABLE
(each receiver)
DIFFERENTIAL INPUTS
A–B
VID ≥ 0.2 V
–0.2 V < VID < 0.2 V
VID ≤ –0.2 V
X L H Z
Open circuit
H = high level, L = low level, X = irrelevant,
Z = high impedance (off), ? = indeterminate
ENABLES
G G
H
X
H
X
H
X
H
X
X
L
X
L
X
L
X
L
OUTPUT
Y
H
H
?
?
L
L
H
H
4
12
2
1
6
7
10
9
14
15
†
≥ 1
3
5
11
13
logic symbol
G
G
1A
1B
2A
2B
3A
3B
4A
4B
†
This symbol is in accordance with ANSI/IEEE Std 91-1984
and IEC Publication 617-12.
Pin numbers shown are for the J or W package.
1Y
2Y
3Y
4Y
logic diagram (positive logic)
4
G
12
G
2
1A
1
1B
6
2A
7
2B
10
3A
9
3B
14
4A
15
4B
13
3
1Y
5
2Y
11
3Y
4Y
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
schematics of inputs and outputs
G inputs
SN55LBC173
QUADRUPLE LOW-POWER DIFFERENTIAL RECEIVER
SGLS081 – MARCH 1995
EQUIVALENT OF A AND B INPUTS
V
CC
100 kΩ
A Only
Input
18 kΩ
100 kΩ
B Only
3 kΩ
12 kΩ
Receiver
1 kΩ
TYPICAL OF ALL OUTPUTS
V
CC
Y Output
TYPICAL OF G AND G INPUTS
Input
V
CC
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range, V
Input voltage, V
(A or B inputs) ±25 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
I
Differential input voltage, V
Data and control voltage range –0.3 V to 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Continuous total dissipation See Dissipation Rating Table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating free-air temperature range, T
Storage temperature range, T
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds 260°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
†
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTES: 1. All voltage values are with respect to GND.
2. Differential input voltage is measured at the noninverting input with respect to the corresponding inverting input.
(see Note 1) –0.3 V to 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CC
(see Note 2) ±25 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ID
–55°C to 125°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
–65°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
stg
A
†
PACKAGE
FK 1375 mW 11.0 mW/°C 275 mW
J 1375 mW 11.0 mW/°C 275 mW
W 1000 mW 8.0 mW/°C 200 mW
POWER RATING
recommended operating conditions
Supply voltage, V
Common-mode input voltage, V
Differential input voltage, V
High-level input voltage, V
Low-level input voltage, V
High-level output current, I
Low-level output current, I
Operating free-air temperature, T
CC
IC
ID
IH
IL
OH
OL
A
DISSIPATION RATING TABLE
TA ≤ 25°C
p
DERATING FACTOR
ABOVE TA = 25°C
TA = 125°C
POWER RATING
MIN NOM MAX UNIT
4.75 5 5.25 V
–7 12 V
±6 V
2 V
0.8 V
–8 mA
16 mA
–55 125 °C
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
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