74HC109DB,118

Overview

The 74HC109DB,118 is a dual positive-edge-triggered JK flip-flop manufactured by Nexperia in the HC logic series. It features individual J and K inputs, clock (CP) inputs, asynchronous active-low set (SD) and reset (RD) inputs, and complementary Q and Q outputs. The device operates within a supply voltage range of 2.0 V to 6.0 V and supports an operating temperature range from -40 °C to +125 °C. It utilizes a 16-pin SSOP package.

Feature Summary

• Dual JK flip-flops with independent J and K inputs for flexible configuration as D-type or toggle flip-flops
• Asynchronous active-low set and reset inputs that operate independently of the clock signal
• Schmitt-trigger action on the clock input provides high tolerance to slow rise and fall times
• CMOS low power dissipation combined with high noise immunity and robust latch-up performance

Applications

• Digital state storage and data retention circuits
• Frequency division and counter applications
• Shift register construction
• Timing control and synchronization logic

Procurement Notes

Verify component authenticity through official Nexperia channels or authorized distributors. Confirm the specific suffix 118 corresponds to the SSOP-16 packaging variant. Check current lifecycle status as availability may vary. Ensure compliance with RoHS directives and relevant JEDEC standards for your region. Validate electrical parameters against the latest datasheet before integration.

Selection Notes

Select this component when dual JK functionality is required with CMOS compatibility. The HC series offers wide supply voltage flexibility compared to HCT variants. Consider the SSOP package for space-constrained surface-mount designs. Verify input threshold levels match the driving logic family. Evaluate ESD protection requirements against ANSI/ESDA/JEDEC standards.

Part Context

This part belongs to the Nexperia 74HC series of high-speed CMOS logic devices. It is part of a broader portfolio including various flip-flops, gates, and buffers designed for general-purpose digital applications. The HC series is known for low power consumption and compatibility with standard CMOS logic families across a wide voltage range.

Replacement Considerations

Compatible substitutes include other dual JK flip-flops from the 74HC series such as the 74HC109D or 74HC109PW, provided pinouts and electrical characteristics align. Cross-reference with equivalent parts from other manufacturers ensuring identical logic function and package dimensions.