74FCT564APC

Overview

The 74FCT564APC is an octal bus driver manufactured by National Semiconductor, now part of Texas Instruments. It belongs to the FCT (Fast CMOS Technology) logic family, designed for high-speed digital applications. The device features eight non-inverting buffers with three-state outputs, allowing multiple drivers to share a bus without contention. It operates within a standard voltage range and supports TTL-compatible input levels, ensuring reliable interfacing with various logic families in system designs.

Feature Summary

• Octal configuration providing eight independent data paths
• Three-state output capability for efficient bus sharing
• TTL-compatible input thresholds for broad compatibility

Applications

• High-speed data bus buffering in computer systems
• Memory interface circuits requiring tri-state control
• General-purpose logic buffering in industrial control panels

Procurement Notes

Verify the manufacturer source carefully, as National Semiconductor was acquired by Texas Instruments. Ensure the specific suffix matches your packaging requirements. Confirm RoHS compliance status if environmental regulations apply to your project. Cross-reference the datasheet revision date to ensure design compatibility with current standards.

Selection Notes

Select this component when an octal buffer with tri-state functionality is required. Consider the FCT series for its balance of speed and power consumption compared to older LS or ALS families. Evaluate the DIP-20 package suitability for through-hole prototyping or legacy board layouts before finalizing the design choice.

Part Context

This component is part of the broader 74FCT logic family, which bridges the performance gap between standard CMOS and bipolar technologies. It represents a transition era in semiconductor design, offering faster switching speeds than traditional HC/HCT devices while maintaining low power dissipation characteristics suitable for dense digital circuits.

Replacement Considerations

SN74FCT564ATQ1: Texas Instruments equivalent with automotive qualification.