CD54HC174F

Overview

The CD54HC174F is a hex D-type flip-flop manufactured by Harris Corporation, belonging to the HC/UH logic series. It features positive edge triggering and provides complementary outputs for each of its six internal circuits. The device utilizes CMOS technology and is housed in a 16-lead ceramic DIP package (CDIP16) with glass-sealed construction. It operates within a supply voltage range of 2V to 6V and supports a maximum frequency of 20MHz at nominal supply. The component is rated for an extended operating temperature range from -55°C to 125°C.

Feature Summary

• Hex configuration providing six independent D-type flip-flops within a single package
• Positive edge-triggered operation ensuring precise data capture on clock transitions
• Complementary output availability for each flip-flop stage
• Ceramic DIP packaging with frit sealing for enhanced environmental durability

Applications

• High-reliability digital data storage systems requiring extended temperature tolerance
• Military and aerospace electronic circuits demanding hermetic sealing
• Industrial control applications utilizing 2V to 6V CMOS logic families
• Synchronous sequential logic design in harsh operational environments

Procurement Notes

Verify that the specific procurement lot matches the CD54HC174F designation, as standard commercial variants may differ in package material or sealing method. Confirm compliance with export control classifications such as EAR99 if applicable to the destination jurisdiction. Ensure the supplier provides documentation verifying the ceramic construction and glass-seal integrity, as these are critical for the specified military-grade reliability standards associated with this part number.

Selection Notes

Select the CD54HC174F when application requirements demand a high-density hex flip-flop solution with robust physical protection against moisture and contaminants. This component is appropriate for designs necessitating operation across extreme thermal conditions beyond standard industrial limits. Consider the complementary output feature if signal inversion is required without additional logic gates. Evaluate the 2V to 6V supply range compatibility with existing system power rails before integration into the circuit architecture.

Part Context

This component belongs to the broader 74HC/UH family of high-speed CMOS logic devices produced by Harris Corporation. While many family members share similar electrical characteristics and pinouts, the CD54HC174F is distinct due to its specific hex flip-flop functionality and specialized ceramic packaging. It differs from plastic-packaged equivalents by offering superior hermeticity, making it suitable for applications where standard plastic packages would fail under environmental stress.

Replacement Considerations

Public confirmed substitute part numbers: CD54HC174M, CD54HC174W.