TEXAS INSTRUMENTS SN75176BDR RS422 / RS485 Transceiver, SOIC-8

The TEXAS INSTRUMENTS SN75176BDR is a highly robust differential bus transceiver engineered for reliable, bidirectional data communication across multipoint bus transmission lines, particularly in challenging industrial and networking environments. Its design adheres to key industry standards, including ANSI TIA/EIA-422-B and TIA/EIA-485-A, as well as ITU recommendations V.11 and X.27, ensuring compatibility and performance in balanced line applications.

This integrated circuit combines a 3-state differential line driver and a differential input line receiver, both powered from a single 5V supply (4.75V to 5.25V). A key feature is the individual active-high and active-low enable pins for the driver and receiver, which can be tied together externally to provide simple and effective direction control for the data flow on the bus.

The device is specifically tailored for multipoint transmission on long bus lines where electrical noise is a concern. Its differential I/O bus ports are designed to present minimal loading to the bus when the driver is disabled or unpowered, supporting up to 32 nodes. These ports offer wide positive and negative common-mode voltage ranges, making the SN75176BDR exceptionally suitable for party-line applications.

Built-in protection and eco-friendly design enhance its reliability and suitability for modern electronics. The transceiver includes thermal shutdown protection and driver output current limiting (both positive and negative) to safeguard against fault conditions. It is also a green product, manufactured without antimony or brominated flame retardants (no Sb/Br).

Applications

• Industrial automation and control systems
• Communications networking equipment
• Point-of-sale systems and industrial instrumentation
• Any application requiring robust, long-distance, multi-drop serial data communication.

Specifications

• **IC