Fail-safe Differential Bus TransceiverThe SN75276 differential Bus Transceiver is a monolithic, integrated circuit designed for bidirectional data
Communication on multipoint bus transmission lines. It is designed for balanced transmission lines and is
electrically compatible with ANSI Standards TIA/EIA-422-B and TIA/EIA-485-A, and meets ITU
Recommendation V.11.
The fail-safe operation ensures a known level on the circuit output under bus fault conditions. The circuit
provides a high-level output under floating-line, idle-line, open-circuit, and short-circuit bus conditions (see
Function Tables).
The SN75276 combines a 3-state, differential Line Driver and a differential input line receiver, both of which
operate from a single, 5-V power supply. The driver and receiver have active-high and active-low enables,
respectively, that CAN be externally connected together to function as a 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 driver is disabled or
VCC = 0. These ports feature wide positive and negative common-mode voltage ranges making the device
suitable for party-line applications. By STMicroelectronics
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SN75276 Pb-Free | SN75276 Cross Reference | SN75276 Schematic | SN75276 Distributor |
SN75276 Application Notes | SN75276 RoHS | SN75276 Circuits | SN75276 footprint |