SN74LS109ADRE4

Flip Flops Overview

The SN74LS109ADRE4 is a dual positive-edge-triggered J-K flip-flop from Texas Instruments' 74LS logic series. It features two independent circuits in a 16-pin SOIC-Narrow package. The device operates with a supply voltage range of 4.75V to 5.25V and supports TTL input/output levels. Key electrical parameters include a maximum propagation delay of 40ns, a high-level output current of -400µA, and a low-level output current of 8mA. It is designed for industrial temperature ranges and includes preset and reset functionality.

Flip Flops Feature Summary

• Dual positive-edge-triggered J-K flip-flop architecture
• Compatible with standard TTL input and output levels
• Integrated asynchronous preset and reset controls

Flip Flops Applications

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

Flip Flops Procurement Notes

This component is marked as obsolete and no longer manufactured by Texas Instruments. Availability is limited to third-party distributors or surplus stock. Verify the specific source's authenticity and condition before purchase, as new production units are not available directly from the manufacturer.

Flip Flops Selection Notes

Select this part only if legacy 74LS compatibility is required for existing designs. Consider that the device is obsolete; alternative modern logic families may offer improved performance or availability. Ensure the design can accommodate the specific electrical characteristics and pinout of the 74LS series.

Flip Flops Part Context

The SN74LS109 belongs to the widely used 74LS (Low-power Schottky) family, known for balanced speed and power consumption. The 'ADRE4' suffix indicates a specific tape-and-reel packaging variant within the SOIC-Narrow form factor, intended for automated surface-mount assembly processes.

Flip Flops Replacement Considerations

Direct replacement options are limited due to the obsolete status. Check for equivalent parts from other manufacturers offering 74LS-compatible specifications in similar packages, or consider redesigning with active 74HC or 74HCT series components if voltage levels permit.