MC74F657BDWR2

Overview

The MC74F657BDWR2 is an octal bus transceiver manufactured by onsemi, belonging to the F/FAST logic series. It features a single function with bidirectional data transfer capabilities and inverted output polarity. The device utilizes CMOS technology and is housed in a 20-pin SOIC-Wide package suitable for surface mount installation. It operates within a supply voltage range of 2 V to 6 V and supports a maximum input frequency of 130 MHz. The component is rated for operation across an extended temperature range from -55 °C to +125 °C.

Feature Summary

• Provides bidirectional data transmission between two buses using a single direction control signal.
• Features common output enable functionality to manage bus traffic effectively.
• Inverted output polarity ensures specific signal phase requirements are met in circuit designs.

Applications

• Mobile applications requiring high-speed data transfer
• Computing systems utilizing bus architectures
• High-density memory modules

Procurement Notes

Verify the specific ordering suffix to ensure the correct package variant and tape-and-reel configuration match the assembly requirements. Confirm RoHS compliance status and moisture sensitivity level prior to soldering. Cross-reference the manufacturer datasheet for exact pinout definitions and electrical characteristics to prevent integration errors during the design phase.

Selection Notes

Select this component when designing circuits that require robust, high-speed bidirectional data routing with low propagation delay. The wide operating temperature range makes it suitable for industrial or automotive environments where thermal stability is critical. Ensure the system voltage aligns with the 2 V to 6 V operational limits to maintain signal integrity.

Part Context

This part belongs to the MC74F657 family of octal bus transceivers. It serves as a key interface component in digital systems, facilitating data movement between microprocessors and peripheral devices. The F/FAST series is known for balancing speed and power consumption, making it a standard choice for general-purpose logic applications requiring reliable bus isolation and driving capability.

Replacement Considerations

Check for direct substitutes such as the MC74F657D or other variants within the same F/FAST series that share identical pinouts and electrical specifications. Verify compatibility with existing PCB footprints and ensure that any alternative components meet the same voltage and temperature ratings.