74HCT109D,652

Overview

The Nexperia 74HCT109D,652 is a dual positive-edge-triggered J-K flip-flop with asynchronous set and reset inputs. It operates within a supply voltage range of 4.5 V to 5.5 V. The device features TTL-compatible input levels and includes Schmitt-trigger action on the clock input for noise immunity. It is housed in a 14-pin SO package.

Feature Summary

• Dual positive-edge-triggered J-K flip-flops with individual J and K inputs
• Asynchronous active-low set and reset inputs independent of the clock
• TTL-compatible input logic levels for direct interfacing

Applications

• Digital counting circuits
• Data storage registers
• Frequency division applications

Procurement Notes

Verify the specific suffix '652' against current Nexperia documentation to confirm availability status. Check for potential End-of-Life notices or product change notifications that may affect long-term supply. Ensure compatibility with standard 14-pin SOIC footprints during integration.

Selection Notes

Select this component when dual J-K flip-flops with TTL-level inputs are required. The Schmitt-trigger clock input provides tolerance for slower rise times. Verify that the 4.5 V to 5.5 V operating range aligns with the system power supply constraints.

Part Context

This part belongs to the 74HCT series of high-speed CMOS logic devices. It is designed for operation at standard 5 V logic levels while maintaining low power dissipation. The device complies with JEDEC standards for ESD protection and latch-up performance.

Replacement Considerations

Consider the 74HCT109D,653 as a parameter-equivalent alternative from the same manufacturer family.