74AC109SJ

Flip Flops Overview

The Fairchild Semiconductor 74AC109SJ is a dual positive-edge-triggered J-Kbar flip-flop belonging to the AC series. It features complementary outputs and utilizes CMOS technology within a 16-lead Small Outline Package (SOP). The device operates with a supply voltage range of 2 V to 6 V, supporting an industrial temperature range from -40 °C to +85 °C. It contains two independent functions, each with dedicated inputs and outputs, designed for high-speed digital logic applications requiring edge-triggered state storage.

Flip Flops Feature Summary

• Dual positive-edge-triggered J-Kbar flip-flop functionality
• Complementary output configuration for signal flexibility
• CMOS technology ensuring low power consumption
• Industrial temperature rating for robust operation

Flip Flops Applications

• Digital data storage circuits
• Shift register implementations
• Frequency division networks
• Counting logic systems

Flip Flops Procurement Notes

Verify that the specific ordering suffix SJ corresponds to the 16-lead SOP package variant rather than other available packages such as PDIP or TSSOP. Confirm RoHS compliance status, as some variants may differ in environmental certification. Ensure the manufacturer source is accurately identified as Fairchild Semiconductor to match original design specifications.

Flip Flops Selection Notes

Select this component when dual independent J-K flip-flops are required in a compact surface-mount format. The AC series offers higher speed performance compared to HC series alternatives. Verify that the 2 V to 6 V operating voltage aligns with the system power rails. Consider the complementary output feature if both true and inverted signals are needed simultaneously.

Flip Flops Part Context

This part belongs to the 74AC family of high-speed CMOS logic devices produced by Fairchild Semiconductor. The AC series provides improved switching speeds over standard HC logic while maintaining compatible pinouts. The 74AC109 specifically addresses applications requiring dual bistable elements within a single integrated circuit package.

Flip Flops Replacement Considerations

Equivalent parts include the 74ACT109 for TTL-compatible input levels and the 74HC109 for slower but widely available alternatives. Cross-reference package dimensions carefully when substituting between SOP, PDIP, and TSSOP formats.