CD74HCT109MT

Overview

The CD74HCT109MT is a high-speed CMOS logic device containing two independent positive-edge-triggered J-K flip-flops with set and reset functions. It operates within a supply voltage range of 4.5 V to 5.5 V. The component features asynchronous set and reset inputs, Schmitt trigger clock inputs for noise immunity, and differential outputs. Typical maximum frequency is 54 MHz at 5 V with 15 pF load. It is housed in a 16-SOIC surface-mount package.

Feature Summary

• Dual positive-edge-triggered J-K flip-flops with configurable logic clock
• Asynchronous active-low clear and set functions
• Schmitt trigger clock inputs for improved noise immunity

Applications

• Embedded control systems requiring dual flip-flop logic
• Digital signal processing circuits
• Timing and sequencing applications

Procurement Notes

Verify the obsolete status of the CD74HCT109MT before procurement planning. Confirm availability of parametric equivalents such as the CD74HCT109M96 from Texas Instruments. Ensure that any substitute part matches the required SOIC-16 package and electrical specifications for seamless integration into existing designs without requalification.

Selection Notes

Select this component when dual J-K flip-flops with Schmitt trigger inputs are required in a surface-mount format. Verify compatibility with 5V HCT logic families. Consider the obsolete status and plan for alternative sourcing or redesign if long-term production support is critical for the application lifecycle.

Part Context

This part belongs to the Texas Instruments CD74HCT series of high-speed CMOS logic devices. It is a variant of the CD74HCT109, specifically packaged in a 16-pin Small Outline Integrated Circuit (SOIC) for surface-mount technology applications. The series is designed for compatibility with standard TTL logic levels while offering CMOS power efficiency.

Replacement Considerations

The CD74HCT109MT is listed as obsolete. The CD74HCT109M96 is identified as a parametric equivalent substitute. Verify pinout and electrical characteristics match before substitution.