75176BP

SN75176B Differential Bus Transceiver — Reliable Communication for Multipoint Bus Systems

The SN75176B is a high-performance differential bus transceiver from Texas Instruments, engineered for bidirectional data communication on multipoint bus transmission lines. Compliant with ANSI Standards TIA/EIA-422-B and TIA/EIA-485-A as well as ITU Recommendations V.11 and X.27, this IC is an essential component for maintaining reliable signal integrity in complex electronic systems — including the control boards and communication buses found in arcade machines, pinball machines, and other coin-operated game room equipment. Operating from a single 5V supply, it combines a 3-state differential line driver with a differential input line receiver, making it a compact and versatile solution for demanding environments.

Built to handle the noise and signal challenges common in multipoint transmission systems, the SN75176B features robust driver protection including thermal shutdown at approximately 150°C and positive/negative current limiting. Its wide common-mode voltage range makes it well-suited for party-line applications, while the receiver's 12kΩ minimum input impedance and ±200mV input sensitivity ensure accurate signal detection even in electrically noisy game room environments.

• Bidirectional data communication on multipoint bus lines
• Meets ANSI TIA/EIA-422-B, TIA/EIA-485-A, ITU V.11 and X.27 standards
• 3-state driver and receiver outputs
• Individual driver and receiver enables for flexible direction control
• ±60mA maximum driver output capability
• Thermal shutdown protection at ~150°C junction temperature
• Driver positive and negative current limiting
• 12kΩ minimum receiver input impedance
• ±200mV receiver input sensitivity with 50mV typical hysteresis
• Operates from a single 5V power supply