CD74FCT2574ATQM

Overview

The CD74FCT2574ATQM is an octal D-type register manufactured by Harris Corporation, belonging to the FCT logic series. It features non-inverting outputs and operates within a supply voltage range of 4.75 V to 5.25 V, with a nominal rating of 5 V. The device provides single-ended inputs and outputs, supporting a propagation delay of 6.5 ns. It is housed in a PDSO20 package and functions as a registered bus transceiver with three-state output capability.

Feature Summary

• Octal D-type register configuration for high-density data storage
• Three-state outputs enabling efficient bus line multiplexing
• Non-inverting signal polarity for direct logic interfacing

Applications

• High-speed parallel data buffering in digital systems
• Registered bus transceivers for system interconnects
• Memory interface circuits requiring fast clock-to-output timing

Procurement Notes

Verify component authenticity through authorized Harris Corporation distributors or certified suppliers. Confirm the specific ATQM suffix matches the required package variant and temperature grade. Request original manufacturer documentation to validate the part number against current production status, as legacy components may have limited availability or obsolescence risks.

Selection Notes

Select this component when an octal register with low propagation delay is required for synchronous data transfer. Ensure the design accommodates the specified 5 V supply tolerance and three-state output drive requirements. Compare against alternative FCT series devices if different pin counts or output polarities are needed for the target application architecture.

Part Context

This device is part of the Harris FCT (Fast CMOS) family, designed to bridge TTL and CMOS logic levels with improved speed. It serves as a registered version of standard bus drivers, providing latched data storage alongside transmission capabilities within a compact surface-mount package suitable for dense PCB layouts.

Replacement Considerations

Public confirmed substitute part numbers: None identified.