CD54HC174F3A

Overview

The CD54HC174F3A is a high-speed CMOS logic device manufactured by Harris Corporation, classified as a hex D-type flip-flop. It features six independent positive-edge-triggered D flip-flops with complementary outputs within a single package. The component operates on a supply voltage range of 2V to 6V and supports a maximum operating frequency of 20MHz at nominal supply. It utilizes a ceramic DIP-16 package with glass-sealed construction, designed for military-grade reliability across an extended temperature range from -55°C to +125°C.

Feature Summary

• Hex configuration providing six independent D-type flip-flops in one unit
• Positive-edge triggering mechanism for precise data capture
• Complementary output structure offering both true and inverted signals
• Military-grade ceramic packaging ensuring durability in harsh environments

Applications

• High-reliability digital data storage systems
• Military-grade shift register applications
• Industrial control logic circuits requiring wide temperature tolerance
• Spacecraft telemetry data buffering

Procurement Notes

Verify the manufacturer origin carefully, as Harris Corporation's semiconductor assets were acquired by Texas Instruments. Confirm that the specific part number corresponds to the original Harris production run rather than a TI equivalent. Check for RoHS compliance status, as older Harris parts are typically non-compliant. Ensure the ceramic DIP-16 package matches your board layout requirements before ordering.

Selection Notes

Select this component when a high-density solution for multiple flip-flops is required in a rugged environment. The HC series offers faster switching speeds compared to standard 74HC devices. Consider the complementary outputs if signal inversion is needed without additional gates. Verify power supply constraints align with the 2V to 6V operational range.

Part Context

This part belongs to the CD54HCxx series, which denotes high-speed CMOS logic designed for military specifications. The '54' prefix indicates military grade, while 'HC' signifies high-speed CMOS technology. The 'F3A' suffix typically refers to the specific package style and processing variant used by Harris Corporation for hermetic ceramic dual in-line packages.

Replacement Considerations

Texas Instruments CD54HC174 is the direct successor part number following the acquisition of Harris Semiconductor. Verify pin compatibility and electrical characteristics match exactly. Other manufacturers may offer similar hex D-flip-flops, but ensure they meet the same military temperature and radiation hardness standards if applicable.