SN74LS109ANE4

Flip Flops Overview

The SN74LS109ANE4 is a dual positive-edge-triggered J-K flip-flop from the Texas Instruments 74LS logic family. It features two independent circuits in a 16-pin DIP package. The device operates with a supply voltage range of 4.75V to 5.25V and supports clock frequencies up to 33 MHz. Key electrical characteristics include a maximum propagation delay of 40 ns at 5V with 15pF load, low-level output current of 8 mA, and high-level output current of -400 µA. It includes preset and reset functions.

Flip Flops Feature Summary

• Dual positive-edge-triggered J-K flip-flop architecture
• Integrated preset and master reset control inputs
• Complementary TTL-compatible outputs

Flip Flops Applications

• Digital data storage and shift register construction
• Frequency division and counting circuits
• State machine implementation in digital systems

Flip Flops Procurement Notes

Verify component authenticity through authorized channels due to potential availability from third-party distributors like Rochester Electronics. Confirm RoHS compliance status as indicated by the E4 suffix. Ensure the 16-DIP package matches the target PCB footprint requirements before finalizing procurement decisions.

Flip Flops Selection Notes

Select this component for designs requiring positive-edge triggering within the standard 74LS series constraints. Compare against SN74LS73 if negative-edge triggering is required instead. Consider the 40 ns propagation delay and 33 MHz clock limit when evaluating timing performance for high-speed applications relative to other logic families.

Flip Flops Part Context

This part belongs to the SN54/74LS109 family of J-K flip-flops. The 'E4' suffix denotes lead-free packaging compliant with specific environmental standards. It is functionally equivalent to the base SN74LS109 but adheres to modern manufacturing regulations regarding material composition and solderability.

Flip Flops Replacement Considerations

SN74LS109AN serves as the non-RoHS equivalent. SN74LS109ADRE4 offers the same functionality in a surface-mount SOIC-16 package. SN74LS109ADG4 provides an alternative SOIC-16 variant.