CD54HC85F3A

Comparators Overview

The CD54HC85F3A is a high-speed CMOS logic 4-bit magnitude comparator manufactured by Texas Instruments. It operates within a supply voltage range of 2V to 6V and features buffered inputs and outputs. The device provides typical propagation delays of 13 ns at VCC = 5V with a 15 pF load at 25°C. It is housed in a 16-pin Ceramic Dual In-Line Package (CDIP) designed for through-hole mounting. The component supports an extended industrial temperature range from -55°C to +125°C, ensuring reliable performance in demanding environments.

Comparators Feature Summary

• High-speed CMOS technology enabling rapid signal processing
• Buffered inputs and outputs for improved signal integrity
• Extended industrial temperature range for harsh environment operation

Comparators Applications

• Digital data comparison systems
• Address decoding circuits
• Magnitude comparison in control logic

Comparators Procurement Notes

Verify the specific suffix 'F3A' against the manufacturer's official documentation to confirm package type and environmental rating. Ensure compatibility with existing PCB footprints for the 16-CDIP ceramic package. Confirm that the required operating voltage and temperature ranges align with system specifications before procurement.

Comparators Selection Notes

Select this component when a robust, hermetically sealed comparator is required for military or aerospace applications. The CDIP package offers superior protection compared to plastic variants. Consider the propagation delay characteristics relative to system clock speeds. Verify that the input buffering requirements match the driving source capabilities.

Comparators Part Context

This part belongs to the Texas Instruments 54HC series of high-speed CMOS logic devices. The '54' prefix typically denotes military-grade temperature ranges and reliability standards. The HC designation indicates High-speed CMOS technology, offering speed comparable to LS TTL but with lower power consumption. The F3A suffix specifies the ceramic dual in-line package configuration.

Comparators Replacement Considerations

Consult official substitution guides for equivalent parts within the same logic family. Verify pinout compatibility and electrical parameters such as propagation delay and supply voltage limits. Ensure that any substitute component meets the same environmental and packaging requirements.