ST75C176BDR

Drivers, Receivers, Transceivers Overview

The ST75C176BDR is a low-power RS-485 and RS-422 transceiver manufactured by STMicroelectronics. It integrates one driver and one receiver, operating from a single 5V supply with a typical quiescent current of 300µA when unloaded or fully loaded with disabled drivers. The device supports bi-directional data communications on multipoint bus transmission lines for half-duplex applications. Key electrical parameters include a common mode input voltage range of -7V to 12V, 30ns propagation delays, and 5ns skew. It features short-circuit current limiting and thermal shutdown protection for the driver, along with a fail-safe receiver that guarantees a logic-high output if the input is open circuit.

Drivers, Receivers, Transceivers Feature Summary

• Low power consumption with 300µA typical quiescent current in standby
• Fail-safe receiver ensures high logic output during open circuit conditions
• Driver protected against excessive power dissipation via thermal shutdown
• Supports up to 32 transceivers on a single multipoint bus

Drivers, Receivers, Transceivers Applications

• Bi-directional data communications on multipoint bus transmission lines
• Half-duplex RS-485 interface applications
• RS-422 communication systems requiring low power operation

Drivers, Receivers, Transceivers Procurement Notes

Verify the package type matches the required board layout, as the suffix indicates specific packaging. Confirm the operating temperature range aligns with system requirements, typically spanning -40°C to 85°C for this series. Ensure compatibility with existing RS-485/RS-422 network protocols before integration. Check for RoHS compliance status if environmental regulations apply to the final product assembly.

Drivers, Receivers, Transceivers Selection Notes

Select this component for applications requiring low standby current and robust noise immunity in industrial environments. The fail-safe feature is critical for maintaining signal integrity during bus idle states. Consider the thermal shutdown capability for designs prone to short circuits. Verify that the 5V supply voltage matches the system power rails and that the 30ns delay meets timing constraints.

Drivers, Receivers, Transceivers Part Context

The ST75C176BDR belongs to the ST75C176 family of low-power transceivers designed for RS-485 and RS-422 standards. This family utilizes BiCMOS technology to balance performance and power efficiency. The 'BDR' suffix typically denotes a specific tape-and-reel packaging variant suitable for automated surface-mount assembly, distinguishing it from through-hole or manual placement options.

Drivers, Receivers, Transceivers Replacement Considerations

Direct pin-compatible replacements within the same family include ST75C176BD and ST75C176BN. Verify that substitute parts maintain identical electrical characteristics, particularly the 300µA quiescent current and thermal shutdown thresholds. Ensure the replacement package matches the PCB footprint and soldering profile requirements.