74AC377SJ

Overview

The Fairchild Semiconductor 74AC377SJ is an octal D-type flip-flop belonging to the AC/ACT logic family. It features eight positive edge-triggered D-type flip-flops with common clock and clock enable inputs, providing true outputs. The device utilizes a 20-lead Small Outline Package (SOP) compatible with EIAJ TYPE II standards. It operates within a voltage range of 2.0V to 6.0V and supports a maximum operating temperature of 85°C.

Feature Summary

• Octal configuration containing eight independent D-type flip-flops for parallel data storage
• Positive edge triggering mechanism synchronized by a common clock input
• Clock enable functionality allows selective data transfer based on control signals
• True output polarity provides non-inverted state representation

Applications

• Parallel-to-serial data conversion circuits
• Register file implementations in microprocessor systems
• Data buffering between asynchronous logic domains
• State machine memory elements in digital controllers

Procurement Notes

Verify component authenticity through authorized distribution channels. Confirm package marking matches the specified SOP-20 form factor. Ensure supply chain documentation aligns with manufacturer specifications for the ACT series. Validate environmental compliance status prior to integration into regulated assemblies.

Selection Notes

Select this component when designing systems requiring high-density octal storage with precise timing control. The positive edge-triggered architecture suits synchronous designs demanding reliable data capture. Consider the ACT series characteristics for TTL-compatible input thresholds if interfacing with legacy logic families.

Part Context

This part belongs to the widely adopted 74AC logic family, representing an advancement over standard 74LS technology with reduced power consumption and higher speed capabilities. The octal flip-flop topology serves as a fundamental building block for complex sequential logic circuits in industrial and consumer electronics applications.

Replacement Considerations

The 74ACT377SJX from Rochester Electronics serves as a confirmed substitute option. Verify pinout compatibility and electrical parameter alignment before implementation.