SN74ALS109AN

Flip Flops Overview

The SN74ALS109AN is a dual positive-edge-triggered J-K flip-flop from Texas Instruments' ALS logic series. It operates within a 4.5 V to 5.5 V supply range and features TTL-compatible inputs and outputs. The device provides inverting and non-inverting outputs with a typical propagation delay of 18 ns. It supports low-level output currents of 8 mA and high-level output currents of -400 uA. Packaged in a PDIP-16 through-hole format, it functions reliably across an operating temperature range starting from 0°C.

Flip Flops Feature Summary

• Dual positive-edge-triggered J-K flip-flop configuration
• TTL-compatible input and output interfaces
• Simultaneous inverting and non-inverting output availability

Flip Flops Applications

• Digital data storage circuits
• Frequency division applications
• Shift register construction

Flip Flops Procurement Notes

Verify the specific ordering suffix against official Texas Instruments documentation to confirm package type and temperature grade. Ensure compatibility with system voltage requirements and interface standards before integration. Cross-reference the manufacturer part number with authorized distributor catalogs to validate authenticity and current production status. Confirm RoHS compliance details if required by project specifications.

Flip Flops Selection Notes

Select this component for designs requiring dual J-K flip-flops with moderate speed and standard TTL interfacing. The ALS series offers improved power-delay product compared to standard LS logic. Consider the PDIP-16 package for prototyping or through-hole manufacturing processes. Evaluate thermal performance and noise immunity relative to system constraints when deploying in dense digital environments.

Flip Flops Part Context

This device belongs to the SN74ALS family, representing Advanced Low-power Schottky logic technology. It serves as a direct functional equivalent to other dual J-K flip-flops in the broader 74xx series, though electrical characteristics differ. The ALS series was designed to balance power consumption with switching speed, making it suitable for general-purpose digital logic applications requiring reliable state retention.

Flip Flops Replacement Considerations

SN74LS109ADRE4 is a documented substitute offering similar functionality in a different package.