CD74HC109E

Overview

The CD74HC109E is a dual J-K type flip-flop from the Texas Instruments 74HC logic family, housed in a 16-pin PDIP package. It operates on a single-ended input with differential outputs and supports both inverting and non-inverting polarities. The device functions within a supply voltage range of 4.5 V to 5.5 V, featuring a propagation delay of 40 ns. Output drive capabilities include a low-level current of 4 mA and a high-level current of -4 mA. Designed for through-hole mounting, it ensures reliable performance across standard industrial temperature ranges.

Feature Summary

• Dual J-K flip-flop architecture providing two independent circuits per package
• High-speed CMOS technology enabling operation up to 60 MHz clock frequency
• Positive-edge triggering mechanism for precise timing control
• Integrated set and reset functionality for direct state management

Applications

• Digital counter circuits requiring dual-stage counting capability
• Shift register configurations for data storage and transfer
• Frequency division applications utilizing toggle mode operations
• Timing control systems requiring positive-edge triggered state changes

Procurement Notes

Verify the specific ordering suffix against official Texas Instruments documentation to confirm pinout compatibility and package dimensions. Ensure the procurement channel sources genuine components to guarantee adherence to the specified electrical characteristics and RoHS compliance standards. Cross-reference the manufacturer part number with authorized distributor databases to validate authenticity before finalizing acquisition.

Selection Notes

Select this component when a dual J-K flip-flop with through-hole mounting is required for HC logic level interfacing. The 40 ns propagation delay suits moderate-speed digital designs, while the 4.5 V to 5.5 V supply range aligns with standard 5 V logic systems. Consider the 16-pin PDIP form factor for prototyping or applications necessitating manual insertion into breadboards or perfboards.

Part Context

This device belongs to the Texas Instruments 74HC series, representing high-speed CMOS logic optimized for general-purpose digital applications. The 74HC109 variant specifically addresses designs needing dual J-K flip-flops with positive-edge triggering. It complements other HC family members by offering robust noise immunity and wide operating voltage flexibility within the standard 5 V logic ecosystem.

Replacement Considerations

Publicly confirmed substitute part numbers include SN74HC109N and CD74HC109M96. Verify that alternative packages maintain identical pin assignments and electrical specifications to ensure seamless integration without circuit redesign.