Texas Instruments SN75ALS173N, SN75ALS173NS, SN75ALS173NSLE, SN75ALS173NSR Datasheet
SN75ALS173
QUADRUPLE DIFFERENTIAL LINE RECEIVER
SLLS132C – SEPTEMBER 1991 – REVISED MA Y 1995
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
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 kΩ Min
D
Operates From Single 5-V Supply
D
Low Supply-Current Requirement
27 mA Max
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
ENABLES
OUTPUT
A – B
G G
Y
H X H
V
ID
≥ 0.2
V
X LH
HX?
–
0
.
2
V
<
V
ID
< 0.2
V
X L?
HXL
V
ID
≤ –0.2
V
X LL
X LHZ
p
HXH
Open
Circ
u
it
XLH
H = high level, L = low level, ? = indeterminate,
X = irrelevant, Z = high impedance (off)
Copyright 1995, 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.
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.
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
1B
1A
1Y
G
2Y
2A
2B
GND
V
CC
4B
4A
4Y
G
3Y
3A
3B
N OR NS† PACKAGE
(TOP VIEW)
†
The NS package is only available left-end taped and
reeled (order device SN75ALS173 NSLE).
SN75ALS173
QUADRUPLE DIFFERENTIAL LINE RECEIVER
SLLS132C – SEPTEMBER 1991 – REVISED MA Y 1995
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
logic symbol
†
4B
4A
3B
3A
2B
2A
1B
1A
G
G
4Y
3Y
2Y
1Y
13
11
5
3
15
14
9
10
7
6
1
2
12
4
EN
≥ 1
†
This symbol is in accordance with ANSI/IEEE Std 91-1984 and
IEC Publication 617-12.
logic diagram (positive logic)
4Y
3Y
2Y
1Y
13
11
5
3
15
14
9
10
7
6
1
2
12
4
4B
4A
3B
3A
2B
2A
1B
1A
G
G
schematics of inputs and outputs
TYPICAL OF ALL OUTPUTSEQUIVALENT OF G OR G ENABLE INPUTEQUIVALENT OF EACH A OR B INPUT
70 Ω
GND
Output
V
CC
GND
Input
V
CC
V
CC
288 kΩ
NOM
GND
Input
VCC (A)
or
GND (B)
17 kΩ
NOM
17 kΩ
NOM
17 kΩ
NOM
SN75ALS173
QUADRUPLE DIFFERENTIAL LINE RECEIVER
SLLS132C – SEPTEMBER 1991 – REVISED MA Y 1995
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
†
Supply voltage, V
CC
(see Note 1) 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage, V
I
(A or B inputs) ±14 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Differential input voltage, V
ID
(see Note 2) ±14 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Enable input voltage, V
I
7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Low-level output current, I
OL
50 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Continuous total dissipation See Dissipation Rating Table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating free-air temperature range, T
A
0°C to 70°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, T
stg
–65°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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, except differential input voltage, are with respect to network ground terminal.
2. Differential input voltage is measured at the noninverting input with respect to the corresponding inverting input.
DISSIPATION RATING TABLE
PACKAGE
TA ≤ 25°C
POWER RATING
DERATING FACTOR
ABOVE TA = 25°C
TA = 70°C
POWER RATING
N 1150 mW 9.2 mW/°C 736 mW
NS 625 mW 5.0 mW/°C 400 mW
recommended operating conditions
MIN NOM MAX UNIT
Supply voltage, V
CC
4.75 5 5.25 V
Common-mode input voltage, V
IC
±12 V
Differential input voltage, V
ID
±12 V
High-level input voltage, V
IH
G, G 2 V
Low-level input voltage, V
IL
G, G 0.8 V
High-level output current, I
OH
–400 µA
Low-level output current, I
OL
8 mA
Operating free-air temperature, T
A
0 70 °C
Loading...