QUADRUPLE DIFFERENTIAL LINE DRIVER
SLLS039B – 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 Enable
D Thermal Shutdown Protection
D Positive- and Negative-Current Limiting
D Operates From Single 5-V Supply
D Low Power Requirements
D Functionally Interchangeable With MC3487
The SN75174 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
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.
1, 2EN 4
12 3, 4EN
1, 2EN 5
15 3, 4EN
NC – No internal connection
The SN75174 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 SN75174 is characterized for operation from 0°C to 70°C.
H = TTL high level, X = irrelevant,
L = TTL low level, Z = high impedance (off)
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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.
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Copyright © 1995, Texas Instruments Incorporated