onsemi

MM74HC688N  

Linear Comparators

MM74HC688N Description

The MM74HC688N is an 8-bit identity comparator integrated circuit (IC) designed for high-speed and reliable data comparison tasks. Manufactured by onsemi, this IC belongs to the 74HC series, known for its robust performance and compatibility with various digital systems. The MM74HC688N is housed in a through-hole package, making it suitable for applications where physical robustness and ease of installation are critical.

This IC operates within a supply voltage range of 2V to 6V, ensuring flexibility in power supply requirements. It features a maximum propagation delay of 30ns at 6V and a load capacitance of 50pF, which is crucial for high-speed applications. The quiescent current is as low as 8 µA, making it energy-efficient and suitable for battery-operated devices.

The MM74HC688N provides an active-low output, which is ideal for applications requiring a clear indication of non-identity between input data. The output function is A=B, meaning the output is low when the two 8-bit input words are identical. This feature is particularly useful in systems where data integrity and error detection are paramount.

MM74HC688N Features

• High-Speed Operation: With a maximum propagation delay of 30ns at 6V and 50pF, the MM74HC688N ensures rapid data comparison, making it suitable for high-frequency applications.
• Low Power Consumption: A quiescent current of 8 µA minimizes power usage, enhancing the efficiency of the IC, especially in low-power and battery-operated systems.
• Wide Voltage Range: The ability to operate between 2V and 6V supply voltages provides flexibility and compatibility with various power supply configurations.
• Active-Low Output: The active-low output function (A=B) provides a clear and reliable indication when the two 8-bit input words are identical, simplifying error detection and data integrity checks.
• Robust Through-Hole Packaging: The through-hole mounting type ensures physical durability and ease of installation, making it ideal for industrial and commercial applications.
• Compatibility: As part of the 74HC series, the MM74HC688N is compatible with a wide range of digital systems, ensuring seamless integration into existing setups.

MM74HC688N Applications

The MM74HC688N is ideal for applications requiring high-speed and reliable data comparison. Some specific use cases include:

• Data Integrity Checks: In systems where data accuracy is critical, such as memory systems, the MM74HC688N can quickly identify discrepancies between input data streams.
• Error Detection: The active-low output function makes it suitable for error detection in communication systems, ensuring reliable data transmission.
• Digital Systems: The wide voltage range and compatibility with the 74HC series make it suitable for various digital systems, including microcontrollers and embedded systems.
• Industrial Automation: The robust through-hole packaging and low power consumption make it ideal for industrial applications where durability and energy efficiency are essential.

Conclusion of MM74HC688N

The MM74HC688N is a versatile and reliable 8-bit identity comparator IC, offering high-speed operation, low power consumption, and robust packaging. Its active-low output function and wide voltage range make it suitable for a variety of applications, from data integrity checks to industrial automation. Despite being marked as obsolete, the MM74HC688N remains a valuable component for systems requiring reliable and efficient data comparison.

MM74HC688N Documents

Download datasheets and manufacturer documentation for MM74HC688N

Datasheets :

MM74HC688      

HTML Datasheet :

MM74HC688      

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