CD74FCT574ATQM

Overview

The CD74FCT574ATQM is a Fast Octal D Register manufactured by Harris Corporation, designed for high-speed digital logic applications. It features eight D-type flip-flops with positive-edge triggering and tri-state outputs. The device operates within a supply voltage range of 4.5V to 5.5V and supports clock frequencies up to 70 MHz. Packaged in a 20-SSOP format with a width of 3.90mm, it provides non-inverted output polarity suitable for bus-oriented architectures requiring registered data storage.

Feature Summary

• Fast Octal D Register architecture with positive-edge triggering mechanism
• Tri-state output capability supporting bus-oriented system designs
• High-speed operation with a maximum clock frequency of 70 MHz

Applications

• Bus-oriented memory mapping systems
• Clocked register banks for data storage
• High-speed interface buffering applications

Procurement Notes

Verify the manufacturer designation as Harris Corporation when sourcing this component. Confirm the specific package type is 20-SSOP with a 3.90mm width. Ensure the supply voltage requirements align with the 4.5V to 5.5V operational range. Check for RoHS compliance status as historical documentation may indicate non-compliance. Validate that the part number suffix matches the exact trim and tape specifications required for your assembly process.

Selection Notes

Select the CD74FCT574ATQM for applications requiring octal D-type registration with fast switching speeds. This component is appropriate for systems utilizing FCT logic families where 70 MHz clock performance is necessary. Consider the tri-state output feature if bus sharing is required. The SSOP package is suitable for surface-mount assemblies with space constraints. Ensure compatibility with 5V logic levels and verify thermal management needs for the operating temperature range.

Part Context

This component belongs to the FCT (Fast CMOS Technology) series developed by Harris Corporation. The FCT line bridges the performance gap between standard TTL and advanced CMOS technologies, offering speed comparable to LS-TTL with lower power consumption. The CD74 prefix indicates a commercial grade variant compatible with standard 74-series pinouts and functions, facilitating integration into existing digital designs.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.