QS74FCT574TZ

Flip Flops Overview

The QS74FCT574TZ is an octal edge-triggered D-type flip-flop manufactured by Quality Semiconductor. It belongs to the FCT logic series and features three-state outputs for bus-oriented memory operations. The device operates within a supply voltage range of 4.75 V to 5.25 V. It utilizes a 20-lead Small Outline package (SOIC) with surface mount installation. The component supports TTL input levels and provides non-inverting output polarity. It is designed for high-speed applications with specified propagation delay characteristics suitable for digital data storage.

Flip Flops Feature Summary

• Octal configuration providing eight independent D-type flip-flops in a single package
• Three-state outputs enable direct connection to system buses without additional buffering
• Edge-triggered operation ensures data capture on specific clock transitions
• TTL-compatible inputs simplify interface design with standard logic families

Flip Flops Applications

• Bus-oriented memory register implementations
• High-speed data latching circuits
• Parallel-to-serial conversion interfaces
• Digital signal processing data storage stages

Flip Flops Procurement Notes

Verify the manufacturer designation as Quality Semiconductor Inc, distinct from Texas Instruments or IDT variants. Confirm the package type matches the required SOIC-20 footprint. Check RoHS compliance status and moisture sensitivity level before assembly. Ensure the ordering suffix corresponds to the correct tape and reel quantity if applicable. Validate the datasheet version for accurate electrical timing parameters.

Flip Flops Selection Notes

Select this component when an octal register with three-state outputs is required for bus systems. Consider the FCT series speed and CMOS power consumption benefits over standard 74LS logic. Verify that the 20-pin SOIC package fits the PCB layout constraints. Compare propagation delays against system clock requirements. Ensure input voltage levels are compatible with the driving logic family.

Flip Flops Part Context

This part is part of the FCT (Fast CMOS Technology) family, bridging the performance gap between LS and ALS logic families. It offers higher speed than standard CMOS while maintaining low power consumption. The octal flip-flop architecture is common in microprocessor-based systems for temporary data holding. Quality Semiconductor produces this variant alongside other manufacturers like TI and IDT under similar naming conventions.

Flip Flops Replacement Considerations

Cross-reference with CY74FCT574TSOC from Texas Instruments for pin-compatible alternatives. Check QS74FCT574DTSO from IDT for functional equivalence. Verify package dimensions and electrical specifications match exactly before substitution.