CD54HC273F3A

Overview

The CD54HC273F3A is an octal D-type flip-flop manufactured by Texas Instruments, belonging to the HC logic series. It features eight independent D-type flip-flops with a common clear input and operates within a supply voltage range of 2 V to 6 V. The device utilizes a 20-CDIP package designed for through-hole mounting. It supports a wide operating temperature range from -55 °C to +125 °C, suitable for military and aerospace applications. The component provides non-inverting outputs and includes a Schmitt-trigger input structure for noise immunity.

Feature Summary

• Octal configuration containing eight independent D-type flip-flops with a shared clear function
• Wide DC supply voltage operation ranging from 2 V to 6 V for flexible power integration
• Military-grade extended temperature capability spanning -55 °C to +125 °C
• Robust ceramic hermetic packaging ensuring reliability in harsh environments

Applications

• Military and aerospace electronic systems requiring high reliability
• Industrial control equipment operating in extreme temperature conditions
• Data storage registers and buffer memory circuits
• High-speed digital signal processing interfaces

Procurement Notes

Verify the specific suffix F3A corresponds to the required 20-CDIP ceramic package configuration. Confirm that the manufacturer's datasheet specifications align with the intended operational voltage and temperature requirements. Ensure compatibility with existing board layouts due to the through-hole mounting style. Check for any recent product change notifications affecting pinout or electrical characteristics before finalizing procurement decisions.

Selection Notes

Select this component when an octal D-type flip-flop with a global clear input is required for high-reliability applications. The HC series offers standard CMOS performance with broad voltage tolerance. Consider the CD54HCT variant if TTL-compatible input thresholds are necessary instead of standard CMOS levels. Evaluate the physical size constraints of the 20-CDIP package against available PCB real estate.

Part Context

This part belongs to the Texas Instruments CD54HCxx family of high-speed CMOS logic devices. The CD54 prefix indicates military-grade qualification and hermetic ceramic packaging. The HC series provides standard switching speeds and power consumption characteristics typical of high-speed CMOS technology. This specific model implements the functional architecture of the SN74HC273 but in a ruggedized form factor.

Replacement Considerations

SN74HC273N (SOIC-20), SN74HC273NSR (SOIC-20), CD54HC273F3A (20-CDIP). Verify pin compatibility and package dimensions before substitution.