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SN55LBC172 Datasheet(PDF) 1 Page - Texas Instruments

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Part No. SN55LBC172
Description  QUADRUPLE LOW-POWER DIFFERENTIAL LINE DRIVER
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Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
Logo TI - Texas Instruments

SN55LBC172 Datasheet(HTML) 1 Page - Texas Instruments

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SN55LBC172
QUADRUPLE LOW-POWER DIFFERENTIAL LINE DRIVER
SGLS084B – MARCH 1995 – REVISED SEPTEMBER 1999
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
D Meets Standard EIA-485
D Designed for High-Speed Multipoint
Transmission on Long Bus Lines in Noisy
Environments
D Supports Data Rates up to and Exceeding
Ten Million Transfers Per Second
D Common-Mode Output Voltage Range of
– 7 V to 12 V
D Positive- and Negative-Current Limiting
D Low Power Consumption . . . 1.5 mA Max
(Output Disabled)
description
The SN55LBC172 is a monolithic quadruple
differential line driver with 3-state outputs. This
device is designed to meet the requirements of the
Electronics Industry Association (EIA) standard
RS-485. The SN55LBC172 is optimized for
balanced multipoint bus transmission at data
rates up to and exceeding 10 million bits per
second. The driver features wide positive and
negative common-mode output voltage ranges,
current limiting, and thermal-shutdown circuitry,
making it suitable for party-line applications in
noisy environments. The device is designed using
the LinBiCMOS
™ process, facilitating ultralow
power consumption and inherent robustness.
The SN55LBC172 provides positive- and negative-current limiting and thermal shutdown for protection from
line fault conditions on the transmission bus line. This device offers optimum performance when used with the
SN55LBC173M quadruple line receiver. The SN55LBC172 is available in the 16-pin CDIP package (J), the
16-pin CPAK package (W), or the 20-pin LCCC package (FK).
The SN55LBC172 is characterized for operation over a military temperature range of –55
°C to 125°C.
FUNCTION TABLE
(each driver)
INPUT
ENABLES
OUTPUTS
A
G
G
Y
Z
H
H
X
H
L
L
H
XL
H
H
X
LH
L
L
X
LL
H
X
L
H
Z
Z
H = high level, L = low level, X = irrelevant,
Z = high impedance (off)
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
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
1A
1Y
1Z
G
2Z
2Y
2A
GND
VCC
4A
4Y
4Z
G
3Z
3Y
3A
J OR W PACKAGE
(TOP VIEW)
NC – No internal connection
FK PACKAGE
(TOP VIEW)
19
20
1
32
17
18
16
15
14
13
12
11
9
10
5
4
6
7
8
4Y
4Z
NC
G
3Z
1Z
G
NC
2Z
2Y
LinBiCMOS is a trademark of Texas Instruments Incorporated.
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.


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