SN74ALS109ADG4

Flip Flops Overview

The SN74ALS109ADG4 is a dual positive-edge-triggered J-K flip-flop from Texas Instruments' Advanced Low-Power Schottky (ALS) logic family. It integrates two independent flip-flops within a single 16-pin SOIC package, featuring TTL-compatible inputs and outputs. The device operates on a 5V supply with a voltage range of 4.5V to 5.5V. Key electrical characteristics include a propagation delay of 18ns, a low-level output current of 8mA, and a high-level output current of -400uA. It supports set and reset functions for versatile digital state management.

Flip Flops Feature Summary

• Advanced Low-Power Schottky technology ensures high-speed operation while maintaining reduced power consumption compared to standard LS logic.
• Dual configuration provides two independent positive-edge-triggered J-K flip-flops in a compact surface-mount package.
• TTL-compatible input and output interfaces facilitate direct integration with other standard logic families.

Flip Flops Applications

• High-speed digital data storage and shift register circuits
• Frequency division and counter applications in timing systems
• State machine implementation in industrial control logic

Flip Flops Procurement Notes

Verify the specific suffix 'DG4' against the manufacturer's latest documentation to confirm lead-free status and RoHS compliance details. Ensure the SOIC-16 package dimensions match your PCB footprint requirements. Confirm that the ALS series availability aligns with your long-term production needs, as legacy logic families may have varying supply chain stability.

Flip Flops Selection Notes

Select this component when a balance between speed and power efficiency is required for dual flip-flop applications. The ALS series offers faster switching than LS variants but consumes more power than AS series. Verify that the 18ns propagation delay meets your system's timing constraints and that the 8mA sink capability is sufficient for your load requirements.

Flip Flops Part Context

This part belongs to the SN74ALS109 family, which includes variants like SN74ALS109AN and SN74ALS109AD. The 'DG4' designation specifically indicates a tape-and-reel surface-mount version in an SOIC package with lead-free construction. It serves as a modern replacement for older through-hole DIP versions in automated assembly processes.

Flip Flops Replacement Considerations

SN74ALS109AD is a compatible alternative in the same package type. SN74LS109ADG4 is functionally similar but slower due to LS technology. SN74ALS109AN is a through-hole equivalent. Verify pinout compatibility before substitution.