CD54HC109F3A

Overview

The CD54HC109F3A is a JK flip-flop manufactured by Harris Corporation, belonging to the HC/UH series. It features asynchronous set and reset capabilities with Schmitt trigger clock inputs for noise immunity. The device operates within a temperature range of -55 °C to 125 °C and utilizes a ceramic glass-sealed CDIP16 package. It supports positive edge triggering and provides true outputs.

Feature Summary

• Asynchronous Set and Reset functionality
• Schmitt Trigger Clock Inputs for enhanced noise immunity
• Positive Edge Triggered operation

Applications

• Digital data storage systems
• Shift register construction
• Frequency division circuits
• State machine implementations

Procurement Notes

Verify component authenticity through official Harris Semiconductor documentation or authorized distributors. Confirm the specific F3A suffix indicates the correct ceramic DIP package variant. Ensure compliance with military-grade environmental specifications if required for the application. Check RoHS status as indicated in historical datasheets.

Selection Notes

Select this component when high-temperature stability and robust noise immunity are required. The Schmitt trigger input is suitable for noisy environments. Consider the ceramic package for harsh conditions compared to plastic alternatives. Verify voltage compatibility with the target system logic levels.

Part Context

This part belongs to the HC/UH series of CMOS logic devices produced by Harris Semiconductor. The series is known for wide operating voltage ranges and compatibility with standard TTL logic levels. The CD54 prefix typically denotes military-grade reliability standards.

Replacement Considerations

Compatible substitutes include CD74HC109 for commercial grade applications. For TTL-compatible inputs, consider the HCT series variants such as CD54HCT109. Verify pinout and electrical characteristics match before substitution.