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SN75172 Datasheet Preview

SN75172 Datasheet

QUADRUPLE DIFFRENTIAL LINE DRIVER

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SN75172
QUADRUPLE DIFFRENTIAL LINE DRIVER
SLLS038B – OCTOBER 1980 – REVISED MAY 1995
D Meets or Exceeds the Requirements of
ANSI Standards EIA/TIA-422-B and RS-485
and ITU Recommendation V.11
D Designed for Multipoint Transmission on
Long Bus Lines in Noisy Environments
D 3-State Outputs
D Common-Mode Output Voltage Range of
– 7 V to 12 V
D Active-High and Active-Low Enables
D Thermal Shutdown Protection
D Positive- and Negative-Current Limiting
D Operates From Single 5-V Supply
D Logically Interchangeable With AM26LS31
description
The SN75172 is a monolithic quadruple
differential line driver with 3-state outputs. It is
designed to meet the requirements of ANSI
Standards EIA/TIA-422-B and RS-485 and ITU
Recommendation V.11. The device is optimized
for balanced multipoint bus transmission at rates
of up to 4 megabaud. Each driver features wide
positive and negative common-mode output
voltage ranges, making it suitable for party-line
applications in noisy environments.
N PACKAGE
(TOP VIEW)
1A
1Y
1Z
G
2Z
2Y
2A
GND
1
2
3
4
5
6
7
8
16 VCC
15 4A
14 4Y
13 4Z
12 G
11 3Z
10 3Y
9 3A
DW PACKAGE
(TOP VIEW)
1A
1Y
NC
1Z
G
2Z
NC
2Y
2A
GND
1
2
3
4
5
6
7
8
9
10
20 VCC
19 4A
18 4Y
17 NC
16 4Z
15 G
14 3Z
13 NC
12 3Y
11 3A
NC – No internal connection
The SN75172 provides positive- and negative-current limiting and thermal shutdown for protection from line
fault conditions on the transmission bus line. Shutdown occurs at a junction temperature of approximately
150°C. This device offers optimum performance when used with the SN75173 or SN75175 quadruple
differential line receivers.
The SN75172 is characterized for operation from 0°C to 70°C.
FUNCTION TABLE
(each driver)
INPUT
A
ENABLES
GG
OUTPUTS
YZ
H HXHL
L HXLH
H XLHL
L XLLH
X LHZZ
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.
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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SN75172 Datasheet Preview

SN75172 Datasheet

QUADRUPLE DIFFRENTIAL LINE DRIVER

No Preview Available !

SN75172
QUADRUPLE DIFFRENTIAL LINE DRIVER
SLLS038B – OCTOBER 1980 – REVISED MAY 1995
logic symbol
logic diagram (positive logic)
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.
Terminal numbers shown are for the N package.
4
G
12
G
1
1A
7
2A
9
3A
15
4A
2
1Y
3
1Z
6
2Y
5
2Z
10
3Y
11
3Z
14
4Y
13
4Z
absolute maximum ratings over operating free-air temperature (unless otherwise noted)
Supply voltage, VCC (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
Voltage range at any bus terminal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 10 V to 15 V
Input voltage, VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5 V
Continuous total dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Dissipation Rating Table
Operating free-air temperature range, TA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C
Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 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.
NOTE 1: All voltage values are with respect to the network ground terminal.
PACKAGE
DW
N
DISSIPATION RATING TABLE
TA 25°C
POWER RATING
1125 mW
DERATING FACTOR
ABOVE TA = 25°C
9.0 mW/°C
1150 mW
9.2 mW/°C
TA = 70°C
POWER RATING
720 mW
736 mW
2 POST OFFICE BOX 655303 DALLAS, TEXAS 75265


Part Number SN75172
Description QUADRUPLE DIFFRENTIAL LINE DRIVER
Maker etcTI
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SN75172 Datasheet PDF






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