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SN75ALS173 Datasheet Preview

SN75ALS173 Datasheet

QUADRUPLE DIFFERENTIAL LINE RECEIVER

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SN75ALS173
QUADRUPLE DIFFERENTIAL LINE RECEIVER
D Meets or Exceeds the Requirements of
ANSI EIA/TIA-422-B, EIA/TIA-423-B, and
RS-485
D Meets or Exceeds the Requirements of ITU
Recommendations V.10, V.11, X.26, and
X.27
D Designed for Multipoint Bus Transmission
on Long Bus Lines in Noisy Environments
D 3-State Outputs
D Common-Mode Input Voltage Range of
– 12 V to 12 V
D Input Sensitivity . . . ± 200 mV
D Input Hysteresis . . . 50 mV Typ
D High Input Impedance . . . 12 kMin
D Operates From Single 5-V Supply
D Low Supply-Current Requirement
27 mA Max
SLLS132C – SEPTEMBER 1991 – REVISED MAY 1995
N OR NS† PACKAGE
(TOP VIEW)
1B 1
1A 2
1Y 3
G4
2Y 5
2A 6
2B 7
GND 8
16 VCC
15 4B
14 4A
13 4Y
12 G
11 3Y
10 3A
9 3B
The NS package is only available left-end taped and
reeled (order device SN75ALS173 NSLE).
description
The SN75ALS173 is a monolithic quadruple differential line receiver with 3-state outputs. It is designed to meet
the requirements of ANSI Standards EIA/TIA-422-B, EIA/TIA-423-B, RS-485, and several ITU
recommendations. Advanced low-power Schottky technology provides high speed without the usual power
penalty. The four receivers have an ORed pair of enables in common. Either G high or G low enables all of the
receivers. The device 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 12 V.
The SN75ALS173 is characterized for operation from 0°C to 70°C.
FUNCTION TABLE
(each receiver)
DIFFERENTIAL
A–B
ENABLES
G
G
OUTPUT
Y
VID 0.2 V
H
X
H
X
L
H
H
X
?
– 0.2 V < VID < 0.2 V
X
L
?
VID – 0.2 V
H
X
L
X
L
L
X
L
H
Z
Open Circuit
H
X
H
X
L
H
H = high level, L = low level, ? = indeterminate,
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.
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




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SN75ALS173 Datasheet Preview

SN75ALS173 Datasheet

QUADRUPLE DIFFERENTIAL LINE RECEIVER

No Preview Available !

SN75ALS173
QUADRUPLE DIFFERENTIAL LINE RECEIVER
SLLS132C – SEPTEMBER 1991 – REVISED MAY 1995
logic symbol
4
G
12
G
1
EN
2
1A
1
1B
6
2A
7
2B
10
3A
9
3B
14
4A
15
4B
3
1Y
5
2Y
11
3Y
13
4Y
This symbol is in accordance with ANSI/IEEE Std 91-1984 and
IEC Publication 617-12.
logic diagram (positive logic)
4
G
12
G
2
1A
1
1B
3
1Y
6
2A
7
2B
5
2Y
10
3A
9
3B
11
3Y
14
4A
15
4B
13
4Y
schematics of inputs and outputs
EQUIVALENT OF EACH A OR B INPUT
VCC
EQUIVALENT OF G OR G ENABLE INPUT
VCC
TYPICAL OF ALL OUTPUTS
VCC
70
Input
288 k
NOM
17 k
NOM
VCC (A)
or
GND (B)
17 k
NOM
17 k
NOM
GND
Input
GND
Output
GND
2
POST OFFICE BOX 655303 DALLAS, TEXAS 75265


Part Number SN75ALS173
Description QUADRUPLE DIFFERENTIAL LINE RECEIVER
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