Texas Instruments SN75ALS175N, SN75ALS175NS, SN75ALS175NSLE, SN75ALS175NSR Datasheet
SN75ALS175
QUADRUPLE DIFFERENTIAL LINE RECEIVER
SLLS131C – 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 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
Low Supply Current Requirement
27 mA Max
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
description
The SN75ALS175 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, and RS-485 and several ITU
recommendations. Advanced low-power Schottky technology provides high speed without the usual power
penalty. Each of the two pairs of receivers has a common active-high enable. 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 SN75ALS175 is characterized for operation from 0°C to 70°C.
FUNCTION TABLE
(each receiver)
DIFFERENTIAL INPUTS
ENABLES OUTPUT
A – B EN Y
VID ≥ 0.2 V H H
–0.2 V < VID < 0.2 V H ?
VID ≤ – 0.2 V H L
X L Z
Open Circuit H H
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
1,2EN
2Y
2A
2B
GND
V
CC
4B
4A
4Y
3,4EN
3Y
3A
3B
N OR NS† PACKAGE
(TOP VIEW)
†
The NS package is only available left-ended taped and reeled
(order device SN75ALS175NSLE).
SN75ALS175
QUADRUPLE DIFFERENTIAL LINE RECEIVER
SLLS131C – SEPTEMBER 1991 – REVISED MA Y 1995
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
logic symbol
†
4Y
3Y
2Y
1Y
4B
4A
3B
3A
3,4EN
2B
2A
1B
1A
1,2EN
13
11
5
3
15
14
9
10
12
7
6
1
2
4
EN
EN
†
This symbol is in accordance with ANSI/IEEE Std 91-1984 and
IEC Publication 617-12.
logic diagram (positive logic)
2B
2A
1B
1A
1,2EN
2Y
1Y
3
5
4B
4A
3B
3A
3,4EN
13
11
3Y
4Y15
14
9
10
12
7
6
1
2
4
schematics of inputs and outputs
TYPICAL OF ALL OUTPUTSEQUIVALANT OF EACH ENABLE INPUTEQUIVALANT OF EACH A OR B INPUT
70 Ω
GND
Output
V
CC
GND
V
CC
V
CC
288 kΩ
NOM
GND
Input
VCC (A)
or
GND (B)
17 kΩ
NOM
17 kΩ
NOM
17 kΩ
NOM
EN
Input
SN75ALS175
QUADRUPLE DIFFERENTIAL LINE RECEIVER
SLLS131C – 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 enable-input voltage, V
IH
2 V
Low-level enable-input voltage, V
IL
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
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