CD74FCT574ATE

Overview

The CD74FCT574ATE is an octal edge-triggered D-type flip-flop manufactured by Harris Corporation. It features eight independent D-type registers with true outputs and three-state control. The device operates within a supply voltage range of 4.75 V to 5.25 V. It supports a maximum load capacitance of 50 pF and functions reliably across an industrial temperature range from -40 °C to +85 °C. The component utilizes a plastic surface-mount package designed for high-speed digital applications requiring registered data storage.

Feature Summary

• Octal configuration providing eight independent D-type registers
• Three-state output capability for bus-driven systems
• Edge-triggered data latching on the positive clock transition
• CMOS construction ensuring low power consumption

Applications

• High-speed parallel data buffering in communication interfaces
• Registered bus drivers for system interconnects
• Memory address latching in microprocessor-based designs
• I/O port expansion in embedded control systems

Procurement Notes

Verify manufacturer authenticity as Harris Corporation assets were acquired by other entities. Confirm RoHS compliance status, as original Harris FCT parts may not meet current environmental standards. Check datasheet revisions for electrical parameter updates. Ensure package dimensions match PCB footprint requirements. Validate operating temperature range against application constraints.

Selection Notes

Select this component when eight-bit synchronous registration with tri-state outputs is required. Compare propagation delay specifications against system timing budgets. Evaluate package availability and lead times due to potential discontinuation. Consider pin-compatible alternatives if Harris stock is unavailable. Verify input threshold compatibility with driving logic families.

Part Context

This part belongs to the Harris 74FCT series of fast CMOS logic devices. The FCT family bridges TTL speed with CMOS power efficiency. The CD74FCT574ATE specifically addresses octal register needs. Harris Corporation was a primary supplier before industry consolidation. This component represents legacy high-performance logic technology.

Replacement Considerations

CY74FCT574ATQCT (Texas Instruments) offers equivalent functionality in QSOP-20 packaging. CY74FCT574ATSOC provides SOIC-20 options from Texas Instruments. Verify pinout compatibility before substitution. Check electrical parameters for minor variations. Confirm package thermal characteristics match design requirements.