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SN75LBC172 Datasheet Preview

SN75LBC172 Datasheet

Quadruple Low-Power Differential Line Driver

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SN65LBC172, SN75LBC172
QUADRUPLE LOWĆPOWER DIFFERENTIAL LINE DRIVER
D Meets or Exceeds EIA Standard RS-485
D Designed for High-Speed Multipoint
Transmission on Long Bus Lines in Noisy
Environments
D Support 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)
D Functionally Interchangeable With SN75172
description
The SN65LBC172 and SN75LBC172 are
monolithic quadruple differential line drivers with
3-state outputs. Both devices are designed to
meet the requirements of EIA Standard RS-485.
These devices are optimized for balanced
multipoint bus transmission at data rates up to and
exceeding 10 million bits per second. Each 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.
Both devices are designed using LinBiCMOS,
facilitating ultra-low power consumption and
inherent robustness.
Both the SN65LBC172 and SN75LBC172 provide
positive- and negative-current limiting and
thermal shutdown for protection from line fault
conditions on the transmission bus line. These
devices offer optimum performance when
used with the SN75LBC173 or SN75LBC175
quadruple line receivers. The SN65LBC172 and
SN75LBC172 are available in the 16-pin DIP
package (N) and the 20-pin wide-body small-
outline inline-circuit (SOIC) package (DW).
The SN75LBC172 is characterized for operation
over the commercial temperature range of 0°C to
70°C. The SN65LBC172 is characterized over the
industrial temperature range of − 40°C to 85°C.
SLLS163E − JULY 1993 − REVISED APRIL 2006
N PACKAGE
(TOP VIEW)
1A 1
1Y 2
1Z 3
G4
2Z 5
2Y 6
2A 7
GND 8
16 VCC
15 4A
14 4Y
13 4Z
12 G
11 3Z
10 3Y
9 3A
1A
1Y
NC
1Z
G
2Z
NC
2Y
2A
GND
DW PACKAGE
(TOP VIEW)
1
20
2
19
3
18
4
17
5
16
6
15
7
14
8
13
9
12
10
11
VCC
4A
4Y
NC
4Z
G
3Z
NC
3Y
3A
NC − No internal connection
FUNCTION TABLE
(each driver)
INPUT
ENABLES
OUTPUTS
A
GG
YZ
H
H
X
HL
L
H
X
LH
H
X
L
HL
L
X
L
LH
X
LH
ZZ
H = high level, L = low level,
X = irrelevant, Z = high impedance (off)
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.
Copyright 2001−2006, Texas Instruments Incorporated
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
1




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SN75LBC172 Datasheet Preview

SN75LBC172 Datasheet

Quadruple Low-Power Differential Line Driver

No Preview Available !

SN65LBC172, SN75LBC172
QUADRUPLE LOWĆPOWER DIFFERENTIAL LINE DRIVER
SLLS163E − JULY 1993 − REVISED APRIL 2006
logic symbol
4
G
12
G
1
EN
1
1A
7
2A
9
3A
15
4A
2
1Y
3
1Z
6 2Y
5
2Z
10
3Y
11 3Z
14
4Y
13
4Z
This symbol is in accordance with ANSI/IEEE Std 91-1984
and IEC Publication 617-12.
Pin numbers shown are for the N package.
logic diagram (positive logic)
4
G
12
G
1
1A
2
1Y
3
1Z
7
2A
6
2Y
5
2Z
9
3A
10
3Y
11
3Z
15
4A
14
4Y
13
4Z
schematic diagrams of inputs and outputs
ALL INPUTS
50 µA
VCC
VCC
Y OR Z OUTPUT
Input
200
Driver
Output
2
POST OFFICE BOX 655303 DALLAS, TEXAS 75265


Part Number SN75LBC172
Description Quadruple Low-Power Differential Line Driver
Maker etcTI
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SN75LBC172 Datasheet PDF






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