Texas Instruments

SN74AS821ADW

SN74AS821ADW Description

The SN74AS821ADW is a D-type positive edge-triggered flip-flop designed for high-speed digital logic applications. Manufactured by Texas Instruments, this logic IC chip is part of the 74AS series, known for its robust performance and reliability. The SN74AS821ADW features a single element with 10 bits per element, making it suitable for a variety of digital circuit designs. It operates within a supply voltage range of 4.5V to 5.5V and has a maximum propagation delay of 13ns at 5V with a 50pF load. The device is designed for surface mount applications and comes in a tube package, ensuring ease of integration into modern PCB designs.

SN74AS821ADW Features

• Operating Temperature Range: The SN74AS821ADW operates reliably within a temperature range of 0°C to 70°C, making it suitable for a wide range of industrial and commercial applications.
• High-Speed Performance: With a maximum propagation delay of 13ns at 5V and a 50pF load, the SN74AS821ADW ensures fast signal processing and minimal latency, crucial for high-speed digital systems.
• Low Quiescent Current: The device consumes only 88 mA of quiescent current, which is ideal for applications where power efficiency is a priority.
• Positive Edge Triggering: The positive edge-triggered design ensures precise timing control, making it suitable for synchronous digital circuits.
• High Output Current Capability: The SN74AS821ADW can provide up to 24mA for high output and 48mA for low output, allowing it to drive multiple loads efficiently.
• Compliance and Safety: The device is REACH unaffected and RoHS3 compliant, ensuring it meets the latest environmental and safety standards.
• Moisture Sensitivity Level: With an MSL rating of 1 (unlimited), the SN74AS821ADW is suitable for use in environments with varying humidity levels without the need for special handling.

SN74AS821ADW Applications

The SN74AS821ADW is ideal for a variety of applications due to its high-speed performance and reliability. Some specific use cases include:

• Digital Clock Circuits: The positive edge-triggered design makes it perfect for clock signal processing and synchronization in digital systems.
• Data Latching: The device can be used to latch data in memory circuits, ensuring data integrity and timely processing.
• Signal Conditioning: The high-speed performance and low propagation delay make it suitable for conditioning and processing high-frequency digital signals.
• Control Logic: The SN74AS821ADW can be used in control logic circuits for industrial automation and robotics, where precise timing and signal processing are critical.

Conclusion of SN74AS821ADW

The SN74AS821ADW from Texas Instruments is a versatile and reliable D-type positive edge-triggered flip-flop designed for high-speed digital applications. Its low propagation delay, high output current capability, and wide operating temperature range make it an excellent choice for a variety of digital circuit designs. Despite being marked as obsolete, the SN74AS821ADW remains a valuable component for engineers and designers looking for a robust and efficient solution for their digital logic needs.