onsemi

74ACT521SCX

74ACT521SCX Description

The 74ACT521SCX is an 8-bit identity comparator IC designed for high-speed digital applications. Manufactured by onsemi, this device is part of the 74ACT series, known for its robust performance and reliability. The 74ACT521SCX is housed in a 20SOIC package, making it suitable for surface mount applications. It operates within a supply voltage range of 4.5V to 5.5V and features a maximum propagation delay of 10ns at 5V with a load capacitance of 50pF. This IC is designed to provide an active-low output when the two 8-bit input words are identical, making it ideal for applications requiring fast and accurate data comparison.

74ACT521SCX Features

• High-Speed Performance: With a maximum propagation delay of 10ns at 5V and 50pF, the 74ACT521SCX ensures rapid data comparison, making it suitable for high-speed digital systems.
• Low Quiescent Current: Consuming only 4 µA in quiescent mode, this IC is energy-efficient, making it ideal for applications where power consumption is a critical factor.
• High Output Drive Capability: The 74ACT521SCX can drive up to 24mA in both high and low output states, ensuring robust performance even under demanding conditions.
• Wide Supply Voltage Range: Operating within a supply voltage range of 4.5V to 5.5V, this IC offers flexibility in power supply requirements.
• Active Low Output: The active-low output function (A=B) simplifies circuit design and integration with other digital components.
• Surface Mount Compatibility: The 20SOIC package is designed for surface mount technology (SMT), facilitating easy integration into modern printed circuit boards (PCBs).
• Moisture Sensitivity Level: With an MSL rating of 1 (Unlimited), the 74ACT521SCX is suitable for a wide range of environmental conditions without requiring special handling.
• Compliance: The 74ACT521SCX is REACH unaffected and classified under ECCN EAR99, ensuring compliance with international regulations.

74ACT521SCX Applications

The 74ACT521SCX is ideal for a variety of applications that require fast and accurate data comparison. Some specific use cases include:

• Data Processing Systems: In systems where data integrity and speed are critical, such as servers and data centers, the 74ACT521SCX can be used to compare data streams for error detection and correction.
• Telecommunications: For comparing digital signals in communication systems, ensuring data accuracy and reliability.
• Industrial Automation: In control systems where real-time data comparison is necessary for process monitoring and control.
• Consumer Electronics: In devices requiring high-speed data processing and comparison, such as gaming consoles and high-end multimedia devices.
• Automotive Electronics: For applications in automotive systems where data integrity is crucial, such as engine control units (ECUs) and advanced driver-assistance systems (ADAS).

Conclusion of 74ACT521SCX

The 74ACT521SCX is a high-performance 8-bit identity comparator IC that offers several advantages over similar models. Its low propagation delay, low quiescent current, and high output drive capability make it suitable for a wide range of high-speed digital applications. The device's surface mount compatibility and wide supply voltage range further enhance its versatility. While the 74ACT521SCX is now considered obsolete, its robust performance and reliability make it a valuable component for legacy systems and applications where its unique features are still highly beneficial.