onsemi

74ACT821SPC

74ACT821SPC Description

The 74ACT821SPC is a single 10-bit D-type flip-flop IC designed for high-performance digital applications. Manufactured by onsemi, this through-hole mounted device is part of the 74ACT series and is housed in a 24DIP package. It operates within a supply voltage range of 4.5V to 5.5V and features a clock frequency of up to 150 MHz, making it suitable for demanding digital circuits. The flip-flop is triggered on the positive edge of the clock signal, ensuring precise timing control. Despite its obsolescence, the 74ACT821SPC remains a reliable choice for legacy systems and specific applications where its unique specifications are required.

74ACT821SPC Features

• High Clock Frequency: The 74ACT821SPC supports a clock frequency of up to 150 MHz, enabling fast data processing and high-speed operation.
• Positive Edge Triggering: This feature ensures that the flip-flop captures data on the rising edge of the clock signal, providing consistent and reliable data handling.
• Low Propagation Delay: With a maximum propagation delay of 9.5ns at 5V and 50pF, the 74ACT821SPC ensures minimal latency in signal transmission.
• Low Quiescent Current: The device consumes only 80 µA in quiescent mode, making it energy-efficient and suitable for low-power applications.
• High Output Current: The flip-flop can source and sink up to 24mA, providing robust output drive capabilities.
• Wide Supply Voltage Range: Operating within a 4.5V to 5.5V supply voltage range, the 74ACT821SPC offers flexibility in power supply requirements.
• Moisture Sensitivity Level: Rated at MSL 1 (Unlimited), the device is suitable for a wide range of environmental conditions without the need for special handling.
• Compliance: The 74ACT821SPC is REACH unaffected, ensuring compliance with environmental and safety regulations.

74ACT821SPC Applications

The 74ACT821SPC is ideal for a variety of high-speed digital applications, including:

• Data Storage and Processing: The 10-bit flip-flop is well-suited for applications requiring high-speed data storage and processing, such as digital signal processing and data buffering.
• Telecommunications: In telecom systems, the 74ACT821SPC can be used for clock synchronization and data transmission, ensuring reliable and fast communication.
• Industrial Control Systems: The robust output drive and low propagation delay make it suitable for industrial control systems where precise timing and high reliability are critical.
• Legacy Systems: Despite its obsolescence, the 74ACT821SPC remains a viable option for maintaining and upgrading legacy systems that rely on its specific performance characteristics.

Conclusion of 74ACT821SPC

The 74ACT821SPC is a versatile and reliable D-type flip-flop designed for high-speed digital applications. Its high clock frequency, low propagation delay, and robust output drive capabilities make it an excellent choice for demanding digital circuits. Although it is now obsolete, the 74ACT821SPC continues to offer unique advantages over similar models, particularly in legacy systems and applications where its specific performance characteristics are essential. For engineers and designers seeking a high-performance flip-flop with a proven track record, the 74ACT821SPC remains a valuable component in their toolkit.