74AC377SCX

Overview

The Fairchild Semiconductor 74AC377SCX is an octal D-type flip-flop featuring clock enable functionality and three-state outputs. It operates within the AC logic family, utilizing a 20-lead Small Outline Integrated Circuit (SOIC) package with a standard 0.300-inch width. The device provides buffered positive edge-triggered clock inputs and separate data inputs for each of its eight flip-flops. It supports bus-oriented applications through its high-impedance output states.

Feature Summary

• Features clock enable control for precise data capture timing
• Provides three-state outputs to facilitate bus-oriented system architectures
• Utilizes buffered positive edge-triggered clocking for signal integrity

Applications

• Bus-oriented register systems requiring parallel data storage
• High-speed digital logic circuits utilizing clock enable mechanisms
• Octal data buffering applications in communication interfaces

Procurement Notes

Verify the specific suffix 'SCX' against the manufacturer's current ordering guide to confirm package dimensions and tape-and-reel specifications. Ensure the component matches the AC series electrical characteristics rather than ACT or HC variants. Confirm lead-free status and RoHS compliance documentation aligns with project requirements before finalizing procurement orders.

Selection Notes

Select this component when an octal flip-flop with explicit clock enable control is required, distinguishing it from the standard 74AC374 which lacks this feature. Consider the SOIC-20 package constraints for PCB layout. Evaluate power consumption differences between AC and ACT families if TTL compatibility is necessary for input stages.

Part Context

This part belongs to the Fairchild 74AC series of high-speed CMOS logic devices. It serves as the clock-enable variant within the octal flip-flop lineup, complementing parts like the 74AC374 (standard) and 74ACT374 (TTL-compatible inputs). The SCX designation indicates a specific surface-mount packaging configuration offered by the manufacturer.

Replacement Considerations

The 74ACT377SCX serves as a direct functional substitute with compatible input thresholds. Cross-reference with ON Semiconductor equivalents for supply chain redundancy. Verify pinout compatibility with existing board designs when substituting.