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SN75176ADR-SN75176AP
Differential Bus Transceiver
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SN75176ASLLS100B –JUNE 1984–REVISED JANUARY 2015
SN75176A Differential Bus Transceiver Features Bidirectional Transceiver Meetsor Exceeds the Requirements
Standards EIA/TIA-422-B and ITU
Recommendations V.11 Designedfor Multipoint Transmission Long Busin Noisy Environments Driver and Driver and Receiver Enables Positive and Negative Input/Output Bus
Voltage Ranges Driver Output Capability ±60 mA Max Thermal-Shutdown Protection Driver Positive-Current Limiting and Negative-
Current Limiting Receiver Input Impedance12 kΩ Min Receiver Input Sensitivity ±200 mV Receiver Input Hysteresis50 mV Typ Operates From Single 5-V Supply Lower Power Requirements
Applications Low Speed RS485 communication(5 Mbpsor
less) For 10 Mbps, use SN75176B
DescriptionThe SN75176A differential bus transceiver isa
monolithic integrated circuit designed for bidirectional
data communication on multipoint bus-transmission
lines.Itis designed for balanced transmission lines
and meets ANSI Standard EIA/TIA-422-B and ITU
Recommendation V.11.
The SN75176A combinesa 3-state differential line
driver anda differential input line receiver, bothof
which operate froma single 5-V power supply. The
driver and receiver have active-high and active-low
enables, respectively, that can be externally
connected togetherto functionasa direction control.
The driver differential outputs and the receiver
differential inputs are connected internally to form
differential input/output (I/O) bus ports that are
designed to offer minimum loading to the bus
whenever the driveris disabledor VCC=0. These
ports feature wide positive and negative common-
mode voltage ranges making the device suitable for
party-line applications.
The driveris designedto handle loadsupto60 mAof
sinkor source current. The driver features positive-
and negative-current limiting and thermal shutdown
for protection from line fault conditions. Thermal
shutdown is designed to occur at a junction
temperature of approximately 150°C. The receiver
featuresa minimum input impedanceof 12 kΩ, an
input sensitivity of ±200 mV, anda typical input
hysteresisof50 mV.
The SN75176A can be used in transmission-line
applications employing the SN75172 and SN75174
quadruple differential line drivers and SN75173 and
SN75175 quadruple differential line receivers.
The SN75176Ais characterized for operation from
0°Cto 70°C.
Device Information(1)(1) Forall available packages, see the orderable addendumat
the endofthe datasheet.
