QS74FCT374ATSO

Flip Flops Overview

The QS74FCT374ATSO is an octal D-type flip-flop with three-state outputs manufactured by Quality Semiconductor. It belongs to the FCT logic series and features a SOIC-20 surface-mount package. The device operates within a supply voltage range of 4.75 V to 5.25 V, supporting TTL input levels. Key electrical parameters include a propagation delay of 6.5 ns, a high-level output current of -32 mA, and a low-level output current of 64 mA. It functions as a non-inverting register with eight independent circuits.

Flip Flops Feature Summary

• Octal D-type flip-flop architecture providing eight independent data storage elements
• Three-state output capability for efficient bus line driving applications
• TTL-compatible input structure ensuring direct interface with standard logic families
• Non-inverting polarity maintaining signal integrity across the register

Flip Flops Applications

• Parallel-to-serial data conversion in communication interfaces
• Buffering and latching operations in microprocessor-based systems
• High-speed data acquisition and storage modules
• General-purpose digital logic registers in industrial control equipment

Flip Flops Procurement Notes

Verify the manufacturer designation carefully, as Quality Semiconductor assets were acquired by Integrated Device Technology (IDT) and subsequently Renesas Electronics. Ensure the part number suffix matches the specific package variant required. Cross-reference official datasheets from IDT or Renesas archives to confirm pinout compatibility and electrical specifications before integration into new designs.

Flip Flops Selection Notes

Select this component when an octal register with three-state outputs is required for high-speed digital applications. The FCT series offers superior switching speeds compared to standard 74LS logic while maintaining CMOS power efficiency. Consider the SOIC-20 package dimensions and thermal characteristics for PCB layout optimization. Verify that the system voltage aligns with the specified 5V operating range.

Flip Flops Part Context

This component is part of the broader 74FCT family of high-speed CMOS logic devices. The FCT series was designed to bridge the performance gap between standard TTL and advanced CMOS technologies. As an octal flip-flop, it serves critical roles in data path management and synchronization within complex digital circuits requiring reliable state retention.

Flip Flops Replacement Considerations

Public confirmed substitute part numbers include CY74FCT374ATSOC and CY74FCT374ATSOCT from Texas Instruments. These alternatives share identical logical functionality and pin configurations. Verify package compatibility and electrical parameter alignment before substitution.