onsemi

DM74AS74SJ

DM74AS74SJ Description

The DM74AS74SJ is a dual D-type flip-flop integrated circuit (IC) from the 74AS series, manufactured by onsemi. This IC is designed for high-performance digital applications, featuring a clock frequency of up to 105 MHz and an operating temperature range of 0°C to 70°C (TA). It is equipped with two D-type flip-flops, each capable of storing one bit of data, making it suitable for a variety of digital logic applications.

The DM74AS74SJ operates within a supply voltage range of 4.5V to 5.5V and has a maximum propagation delay of 9ns at 5V with a maximum load capacitance of 50pF. This low propagation delay ensures fast signal processing and high-speed operation. The IC has a quiescent current (Iq) of 16 mA, which is relatively low, contributing to energy efficiency.

The DM74AS74SJ features complementary outputs and is triggered on the positive edge of the clock signal. It is available in a surface-mount package, specifically a 14-pin small outline package (14SOP), which is ideal for compact designs and high-density printed circuit boards (PCBs). The package is moisture sensitivity level (MSL) 1, indicating it is unaffected by moisture, making it suitable for a wide range of manufacturing environments.

DM74AS74SJ Features

• High-Speed Operation: With a clock frequency of up to 105 MHz, the DM74AS74SJ ensures fast data processing and is suitable for high-speed digital applications.
• Low Propagation Delay: The maximum propagation delay of 9ns at 5V and 50pF load capacitance ensures minimal signal delay, enhancing overall system performance.
• Energy Efficiency: The quiescent current of 16 mA contributes to low power consumption, making it ideal for energy-efficient designs.
• Dual D-Type Flip-Flops: Each flip-flop can store one bit of data, providing dual functionality in a single package.
• Complementary Outputs: The complementary output type allows for versatile signal handling and compatibility with various digital circuits.
• Positive Edge Triggering: The IC is triggered on the positive edge of the clock signal, ensuring reliable and consistent operation.
• Surface-Mount Package: The 14SOP package is suitable for compact designs and high-density PCBs, facilitating space-saving applications.
• Moisture Resistance: The MSL 1 rating indicates that the IC is unaffected by moisture, making it suitable for a wide range of manufacturing environments.

DM74AS74SJ Applications

The DM74AS74SJ is ideal for a variety of digital applications where high-speed data processing and reliable operation are required. Some specific use cases include:

• Digital Logic Circuits: The dual D-type flip-flops make it suitable for digital logic circuits that require data storage and processing.
• Clock and Data Synchronization: The low propagation delay and high-speed operation make it ideal for synchronizing clock and data signals in digital systems.
• Sequential Logic Systems: The positive edge triggering and complementary outputs make it suitable for sequential logic systems that require precise timing and signal handling.
• Memory and Storage Applications: The ability to store one bit of data per flip-flop makes it suitable for memory and storage applications where data integrity is crucial.
• High-Density PCB Designs: The surface-mount package allows for compact and high-density PCB designs, making it suitable for applications where space is limited.

Conclusion of DM74AS74SJ

The DM74AS74SJ is a high-performance dual D-type flip-flop IC from the 74AS series, offering a combination of high-speed operation, low propagation delay, and energy efficiency. Its dual functionality, complementary outputs, and positive edge triggering make it suitable for a wide range of digital applications. The surface-mount package and moisture resistance further enhance its versatility and reliability. While the DM74AS74SJ is now considered obsolete, it remains a reliable choice for applications requiring high-speed digital processing and reliable data storage.