onsemi

MM74C85N

MM74C85N Description

The MM74C85N is a 4-bit magnitude comparator IC designed by onsemi, belonging to the 74C series. This linear IC chip is ideal for applications requiring the comparison of binary numbers. It operates within a supply voltage range of 3V to 15V and features an active low output. The MM74C85N provides three output functions: A<B, A=B, and A>B, enabling precise comparison of binary values. With a maximum propagation delay of 300ns at 10V and 50pF, it ensures efficient and rapid signal processing. The device is packaged in a through-hole tube format, making it suitable for traditional PCB assembly methods. Despite being marked as obsolete, the MM74C85N remains a reliable choice for specific legacy systems and applications where its unique features are required.

MM74C85N Features

• High-Speed Performance: The MM74C85N boasts a maximum propagation delay of 300ns at 10V and 50pF, ensuring rapid and accurate comparisons of binary values.
• Versatile Supply Voltage: It operates within a wide supply voltage range of 3V to 15V, providing flexibility in power supply requirements.
• Active Low Output: The active low output configuration simplifies circuit design and integration with other digital systems.
• Triple Output Functions: The device offers three distinct output functions (A<B, A=B, A>B), providing comprehensive comparison capabilities.
• Through-Hole Mounting: The through-hole mounting type ensures robust mechanical stability and compatibility with traditional PCB assembly techniques.
• Compliance and Safety: The MM74C85N is REACH unaffected, ensuring compliance with environmental and safety regulations.
• High Output Current: It supports output currents of 15mA for high and 16mA for low, enabling effective signal driving capabilities.
• Unlimited Moisture Sensitivity Level: With an MSL of 1 (unlimited), the device is suitable for various environmental conditions without the risk of moisture damage.

MM74C85N Applications

The MM74C85N is well-suited for a variety of applications where binary number comparison is essential. Some specific use cases include:

• Digital Systems: Ideal for digital circuits requiring the comparison of binary values, such as in microprocessors and digital controllers.
• Data Processing: Used in data processing units to compare and sort binary data efficiently.
• Memory Management: Useful in memory management systems where address comparison is necessary.
• Control Systems: Employed in control systems to compare sensor inputs and control outputs.
• Legacy Systems: Due to its obsolescence, the MM74C85N is particularly valuable for maintaining and repairing legacy systems where modern alternatives may not be compatible.

Conclusion of MM74C85N

The MM74C85N, despite being marked as obsolete, remains a valuable component in the electronics industry due to its unique features and capabilities. Its high-speed performance, versatile supply voltage range, and triple output functions make it an ideal choice for applications requiring precise and efficient binary number comparison. The through-hole mounting type and compliance with safety regulations further enhance its suitability for various environments. While modern alternatives may offer advanced features, the MM74C85N continues to serve as a reliable and cost-effective solution for specific legacy systems and applications where its unique attributes are indispensable.