MC74F657BDW

Overview

The MC74F657BDW is an octal buffer and line driver manufactured by onsemi, belonging to the 74F logic series. It features a single element with eight bits per element and provides tri-state outputs. The device operates within a supply voltage range of 4.5V to 5.5V. It delivers a maximum output low current (IOL) of 64mA. The component is housed in a 24-pin SOIC package.

Feature Summary

• Provides non-inverting buffering for digital signals
• Features tri-state output capability for bus driving applications
• Utilizes high-speed 74F technology for efficient signal transmission

Applications

• Bus-oriented systems requiring signal buffering
• Clock drivers for high-speed digital circuits
• Memory address decoding and data register interfacing

Procurement Notes

Verify the specific suffix 'DWG' or 'BDW' against official datasheets to confirm package type and tape/reel specifications. Ensure compatibility with 5V logic levels and check RoHS compliance status via manufacturer documentation before integration into production designs.

Selection Notes

Select this component when high-speed performance is required alongside moderate drive strength. The 74F series offers faster switching speeds than standard 74LS devices but consumes more power. Verify that the system voltage remains within the 4.5V to 5.5V range to ensure reliable operation and prevent damage to the tri-state outputs.

Part Context

This part is part of onsemi's extensive portfolio of discrete logic integrated circuits. The 74F series represents a high-speed variant of the standard TTL logic family, adapted for CMOS processes. It serves as a critical interface component in legacy and mixed-signal digital systems where speed and drive capability are prioritized over ultra-low power consumption.

Replacement Considerations

Check for direct pin-compatible alternatives such as other manufacturers' 74F657 variants. Ensure any substitute maintains the same 24-SOIC footprint and tri-state functionality. Verify electrical characteristics match the original design requirements.