MC74F657BDWR

Overview

The MC74F657BDWR is an octal bidirectional transceiver manufactured by onsemi, belonging to the 74F logic series. It operates within a supply voltage range of 2 V to 6 V and features single-ended inputs and outputs in a non-inverting configuration. The device utilizes SOIC-20 surface-mount packaging and supports SMD/SMT installation styles. It functions across an extended temperature range from -55 °C to +125 °C. Key electrical characteristics include a propagation delay of 160 ns, with high-level output current of -7.8 mA and low-level output current of 7.8 mA.

Feature Summary

• Octal bidirectional data transmission capability for eight-bit parallel interfaces
• Non-inverting signal path maintaining logical input state at outputs
• Extended industrial temperature rating suitable for harsh environments

Applications

• Bidirectional bus-oriented communications systems
• Memory-to-memory data transfer applications
• Control signaling between microprocessors and peripheral devices

Procurement Notes

Verify the specific suffix 'DWR' corresponds to the SOIC-20 package and reel/cut-tape packaging format required for your assembly line. Confirm RoHS compliance status through official manufacturer documentation prior to procurement. Ensure thermal management strategies align with the specified operating temperature range of -55 °C to +125 °C for reliable long-term performance in your target application environment.

Selection Notes

Select this component when designing systems requiring robust octal bidirectional data transfer with fast switching speeds characteristic of the F-series logic family. Consider the wide supply voltage tolerance and extended temperature range if operating conditions exceed standard commercial limits. Evaluate pin compatibility and package dimensions against existing PCB layouts to ensure seamless integration without redesigning mechanical constraints or trace routing.

Part Context

This part belongs to the broader category of buffers, drivers, receivers, and transceivers offered by onsemi. It serves as a critical interface element in digital logic circuits, facilitating signal integrity and level shifting between different subsystems. The 74F series designation indicates specific speed and power consumption traits distinct from other logic families like HC or LVX.

Replacement Considerations

Check for direct cross-references such as SN74F657 or equivalent octal bidirectional transceivers from other manufacturers. Verify that substitute parts match the SOIC-20 footprint and maintain compatible electrical parameters including voltage ranges and drive currents.