74FCT377SC

Overview

The 74FCT377SC is an octal D-type flip-flop manufactured by National Semiconductor, housed in a 20-pin SOIC package. It features positive edge triggering and true outputs with a common clock input. The device operates within a supply voltage range of 4.75V to 5.25V. Key electrical specifications include a maximum quiescent current of 40 µA and output drive capabilities of 15mA high and 48mA low. The component exhibits a typical capacitance of 6 pF and is compliant with RoHS standards.

Feature Summary

• Octal D-type flip-flop architecture with eight individual data inputs and corresponding outputs
• Positive edge-triggered operation synchronized by a single buffered clock signal
• True output polarity providing non-inverted logic states

Applications

• Data storage and buffering in digital logic circuits
• Parallel-to-serial conversion modules
• State machine implementation in embedded systems

Procurement Notes

Verify the manufacturer designation as National Semiconductor or its successor entities when sourcing this component. Confirm that the specific suffix 'SC' corresponds to the standard 20-SOIC package variant. Ensure compliance with RoHS directives if environmental regulations apply to your assembly process. Cross-reference datasheet revisions to confirm pinout consistency for integration into existing designs.

Selection Notes

Select this component for applications requiring octal data latching with CMOS-compatible interfaces. The FCT series ensures compatibility with TTL logic levels while maintaining CMOS power characteristics. Consider the 20-pin SOIC form factor for surface-mount assembly constraints. Evaluate the 48mA low-side output drive capability against load requirements to ensure signal integrity without additional buffering stages.

Part Context

This part belongs to the FCT (Fast CMOS Technology) series, designed for high-speed digital applications. It serves as a fundamental building block for sequential logic circuits. The device bridges the performance gap between standard CMOS and older TTL technologies, offering faster switching speeds while maintaining low power consumption typical of CMOS families.

Replacement Considerations

The 74F377SCQR from Fairchild represents a functional equivalent within the same logical family. Verify pinout compatibility and electrical parameter alignment before substitution. Ensure that any alternative source maintains the same package dimensions and thermal characteristics for direct replacement.