Fairchild (onsemi)

74F109SJ

74F109SJ Description

The 74F109SJ is a dual JK-type flip-flop with set (preset) and reset functions, designed for high-speed and reliable digital logic applications. Manufactured by Fairchild Semiconductor (now part of onsemi), this logic IC chip is part of the 74F series, known for its performance and versatility. The 74F109SJ features a clock frequency of 125 MHz, ensuring rapid data processing and synchronization in digital circuits. It operates within a temperature range of 0°C to 70°C (TA), making it suitable for a variety of industrial and commercial environments.

The device has a maximum propagation delay of 8ns at 5V and 50pF, providing exceptional speed and efficiency. It consumes a quiescent current of 17 mA, which is relatively low, contributing to energy efficiency. Each flip-flop element handles 1 bit of data and offers complementary outputs, enhancing signal integrity and reducing noise. The 74F109SJ is triggered on the positive edge, ensuring precise timing control.

With a supply voltage range of 4.5V to 5.5V, the 74F109SJ is compatible with standard 5V digital systems. It features a quiescent current of 17 mA and can source 1 mA and sink 20 mA, providing robust current handling capabilities. The device is available in a surface-mount package, making it ideal for compact and high-density PCB designs. The 74F109SJ is ROHS3 compliant, ensuring environmental sustainability.

74F109SJ Features

• High Clock Frequency: 125 MHz, enabling fast data processing and synchronization.
• Low Propagation Delay: 8ns at 5V and 50pF, ensuring rapid signal transmission.
• Low Quiescent Current: 17 mA, contributing to energy efficiency.
• Dual JK-Type Flip-Flops: Each with set (preset) and reset functions, providing versatile digital logic capabilities.
• Positive Edge Triggering: Ensures precise timing control.
• Complementary Outputs: Enhance signal integrity and reduce noise.
• Surface-Mount Packaging: Ideal for compact and high-density PCB designs.
• Wide Operating Temperature Range: 0°C to 70°C (TA), suitable for various environments.
• ROHS3 Compliant: Ensuring environmental sustainability.

74F109SJ Applications

The 74F109SJ is ideal for applications requiring high-speed digital logic and precise timing control. Its dual JK-type flip-flops with set and reset functions make it suitable for:

• Digital Counters: Used in frequency counters, digital clocks, and other counting applications.
• Registers: For data storage and manipulation in digital systems.
• Sequential Logic Circuits: In state machines and other sequential logic applications.
• Frequency Dividers: Used in clock generation and signal processing.
• Data Synchronization: Ensuring data integrity in high-speed digital systems.

Conclusion of 74F109SJ

The 74F109SJ is a high-performance dual JK-type flip-flop with set and reset functions, offering exceptional speed, low power consumption, and reliable operation. Its features, such as a high clock frequency, low propagation delay, and complementary outputs, make it a versatile and efficient choice for a wide range of digital logic applications. The surface-mount package and wide operating temperature range further enhance its suitability for various industrial and commercial environments. While the 74F109SJ is now obsolete, it remains a benchmark for high-speed digital logic solutions, providing a reliable and efficient alternative to similar models.