SN74HC109DR

Flip Flops Overview

The SN74HC109DR is a dual positive-edge-triggered JK flip-flop from Texas Instruments' HC logic family. It features single-ended CMOS inputs and complementary push-pull outputs in a 16-pin SOIC package. The device operates within a supply voltage range of 2 V to 6 V, supporting an operating temperature range of -40°C to +85°C. Key electrical parameters include a maximum propagation delay of 175 ns at 2 V with 50 pF load, and output drive currents of ±4 mA. It includes set and reset functions for direct control.

Flip Flops Feature Summary

• Dual positive-edge-triggered JK flip-flops integrated into a single package
• Complementary push-pull outputs providing defined high and low states
• Direct set and reset capabilities for immediate state control
• CMOS input structure compatible with standard logic levels

Flip Flops Applications

• Digital counter circuits requiring state storage
• Shift register configurations for data serialization
• Frequency divider applications in clock signal processing
• General-purpose sequential logic control systems

Flip Flops Procurement Notes

Verify the specific ordering suffix 'DR' corresponds to the SOIC-16 surface-mount package and tape-and-reel shipping configuration. Confirm that the component meets RoHS compliance standards as indicated by manufacturer documentation. Ensure compatibility with the target PCB footprint dimensions and soldering thermal profiles before finalizing procurement orders.

Flip Flops Selection Notes

Select this component when dual JK flip-flops are required in a surface-mount format. The HC series offers balanced speed and power consumption suitable for general digital applications. Verify that the 2 V to 6 V supply range aligns with the system's power architecture. Consider the 175 ns propagation delay limit for timing-critical path analysis during circuit design.

Flip Flops Part Context

This part belongs to the SN74HC109 series, which provides dual JK flip-flops. It is distinct from the SN74HC109N (PDIP) and SN74HC109NSR (SOIC). The DR suffix specifically denotes the SOIC-16 package variant manufactured by Texas Instruments, differentiating it from other logic families like F or HCS.

Flip Flops Replacement Considerations

SN74HC109N: PDIP-16 through-hole equivalent. SN74HC109NSR: SOIC-16 surface-mount equivalent with identical electrical characteristics. CD74HC109M96: SOIC-16 variant with extended temperature range up to 125°C.