SN74AS109N

Flip Flops Overview

The SN74AS109N is a dual J-K positive-edge-triggered flip-flop from the Texas Instruments AS logic series. It features independent clear and preset inputs for direct control. The device operates within a supply voltage range of 4.5 V to 5.5 V. It utilizes a 16-pin PDIP package designed for through-hole mounting. Key electrical parameters include a propagation delay of 18 ns, a high-level output current of -400 µA, and a low-level output current of 8 mA. The component supports TTL input and output levels.

Flip Flops Feature Summary

• Dual J-K flip-flops with positive-edge triggering
• Independent active-low clear and preset inputs
• TTL-compatible input and output interfaces

Flip Flops Applications

• High-speed digital counting circuits
• Shift register implementations
• State machine logic design

Flip Flops Procurement Notes

Verify the specific suffix 'AN' confirms the standard plastic DIP-16 package and commercial temperature range. Confirm RoHS compliance status as required by project specifications. Ensure the supplier provides original manufacturer documentation to validate authenticity against counterfeit components. Check for any specific handling requirements associated with the AS logic family during assembly.

Flip Flops Selection Notes

Select this component when high switching speed is critical compared to standard LS or ALS families. The AS series offers faster propagation delays suitable for demanding timing constraints. Ensure the system power supply remains stable between 4.5 V and 5.5 V. Verify that the PCB layout accommodates the 16-pin through-hole footprint and thermal requirements of the AS logic family.

Flip Flops Part Context

This part belongs to the Texas Instruments SN74AS (Advanced Schottky) logic family, known for superior speed-performance-power product characteristics. It serves as a high-speed alternative to previous generations like SN74S109. The device integrates two independent flip-flops into a single package, optimizing board space for complex sequential logic applications requiring rapid state transitions.

Flip Flops Replacement Considerations

SN74ALS109N: Offers similar functionality but with lower power consumption and slightly slower speed. SN74LS109N: A legacy option with significantly higher propagation delay. SN74HC109N: CMOS technology requiring different voltage considerations and interface compatibility checks.