SN74ALS109AD

Flip Flops Overview

The SN74ALS109AD is a dual positive-edge-triggered J-K flip-flop from Texas Instruments' ALS logic series. It features TTL-compatible inputs and outputs, housed in a 16-pin SOIC-Narrow package. The device operates within a supply voltage range of 4.5 V to 5.5 V. Key electrical parameters include a propagation delay of 19 ns, a low-level output current of 8 mA, and a high-level output current of -400 uA. It supports inverting and non-inverting polarities and functions within an operating temperature range of 0°C to +70°C.

Flip Flops Feature Summary

• Dual positive-edge-triggered J-K flip-flops with preset and clear functionality
• TTL-compatible input and output structures for system integration
• Low power consumption characteristics inherent to the Advanced Low-Power Schottky (ALS) series

Flip Flops Applications

• Digital counting circuits requiring precise edge-triggered state changes
• Data storage elements in parallel or serial shift register configurations
• Frequency division and timing control logic in industrial systems

Flip Flops Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and pinout compatibility. Ensure that any alternative part numbers selected meet the required voltage and current specifications. Confirm RoHS compliance status if environmental regulations apply to the end product. Cross-reference the datasheet revision date to ensure access to the most current technical guidelines and electrical characteristics.

Flip Flops Selection Notes

Select this component when a balance between speed and power dissipation is required compared to standard LS logic. The ALS series offers faster switching speeds than LS counterparts while maintaining lower power usage than standard TTL. Consider the SOIC-Narrow package for surface-mount assembly constraints. Verify that the 19 ns propagation delay meets the timing requirements of the target digital circuit design.

Flip Flops Part Context

This device belongs to the SN74ALS family, representing an advancement over the older SN74LS series. It provides improved performance metrics suitable for modern digital applications. The SN74ALS109AD specifically integrates two independent flip-flops into a single compact integrated circuit, facilitating complex sequential logic designs without excessive board space utilization.

Flip Flops Replacement Considerations

• SN74ALS109ADR