SN74LS109ANSR

Flip Flops Overview

The SN74LS109ANSR is a dual J-K positive-edge-triggered flip-flop manufactured by Texas Instruments. It features two independent circuits per package, each with preset and clear inputs. The device operates within a supply voltage range of 4.75 V to 5.25 V. Key electrical parameters include a maximum propagation delay of 40 ns at 5 V with 15 pF load, a clock frequency of 33 MHz, and output currents of 8 mA (low) and 400 µA (high). It utilizes LS TTL logic series with complementary outputs and is housed in a 16-SOIC surface-mount package.

Flip Flops Feature Summary

• Dual positive-edge-triggered J-K flip-flops with independent preset and clear functions
• Complementary outputs for versatile logic interfacing
• Standard LS TTL input and output characteristics

Flip Flops Applications

• Digital counters
• Shift registers
• Frequency dividers

Flip Flops Procurement Notes

Verify the specific suffix 'ANSR' against the manufacturer's current datasheet to confirm package type and tape/reel specifications. Ensure compatibility with standard SOIC-16 footprint requirements. Confirm RoHS compliance status as indicated in the official documentation before integration into production designs.

Flip Flops Selection Notes

Select this component when dual JK flip-flops with preset/clear are required in a surface-mount configuration. It is suitable for applications needing standard LS speed and TTL compatibility. Consider alternative packages like DIP if through-hole mounting is necessary, or HC/HCT series for lower power consumption.

Flip Flops Part Context

This part belongs to the SN54/74LS109 family of dual J-K flip-flops. It is functionally equivalent to other LS109 variants from various manufacturers but differs in packaging and specific electrical tolerances defined by Texas Instruments. It serves as a fundamental building block for sequential logic circuits.

Flip Flops Replacement Considerations

Direct substitutes include SN74LS109ADG4 and SN74LS109AN. Cross-manufacturer equivalents such as HD74LS109P are available. Verify pinout and electrical parameters match before substitution.

Flip Flops FAQ

What is the trigger type of the SN74LS109ANSR?

It is a positive-edge-triggered flip-flop.

Does the SN74LS109ANSR have preset and clear inputs?

Yes, it includes both preset and clear inputs for each flip-flop.