Texas Instruments SN75176AD RS422 Differential Bus Transceiver SOIC-8

The Texas Instruments SN75176AD is a monolithic integrated circuit designed as a differential bus transceiver for bidirectional data communication on multipoint bus transmission lines. Engineered for balanced transmission lines, it meets the stringent requirements of ANSI Standard EIA/TIA-422-B and ITU Recommendation V.11, ensuring reliable performance in industrial and communication applications.

This device integrates a 3-state differential line driver and a differential input line receiver, both operating from a single 5V power supply. The driver and receiver feature active high and active low enables, respectively, which can be externally connected to function as a direction control, simplifying system design. The differential input/output bus ports are designed to offer minimal loading to the bus when the driver is disabled or when VCC is zero, enhancing bus integrity in multi-drop configurations.

A key strength of the SN75176AD is its wide positive and negative common-mode voltage ranges, making it exceptionally suitable for party-line applications and robust operation in noisy environments. It is specifically designed for multipoint transmission over long bus lines, providing reliable data links where signal integrity is critical. Additional protective features include thermal shutdown and driver positive and negative current limiting, safeguarding the device against fault conditions.

Key Features & Specifications

• Compliance: Meets or exceeds ANSI EIA/TIA-422-B and ITU V.11 standards.
• Configuration: Combines a single driver and a single receiver for half-duplex communication.
• Data Rate: Supports high-speed data transfer up to 10 Mbps.
• Supply Voltage: Operates from a 4.75V to 5.25V supply range.
• Package: Housed in a compact, surface-mount SOIC-8 package.
• Bus Loading: Features differential I/O ports designed for minimum bus loading.