Texas Instruments

CD74HC85M

CD74HC85M Description

The CD74HC85M from Texas Instruments is a high-speed 4-bit magnitude comparator in the 74HC series, designed for surface-mount applications in a 16-SOIC package. Operating within a 2V to 6V supply range, it delivers active-high outputs for three comparison states: A<B, A=B, and A>B. With a maximum propagation delay of 33ns at 6V and 50pF load, it ensures rapid decision-making in digital systems. The device boasts low quiescent current (8 µA) and symmetrical output drive capability (5.2mA sink/source), making it energy-efficient while maintaining robust performance. Compliant with ROHS3 and REACH standards, it is suitable for environmentally conscious designs.

CD74HC85M Features

• High-Speed Operation: 33ns propagation delay at 6V enables quick data processing.
• Low Power Consumption: 8 µA quiescent current minimizes standby power.
• Wide Voltage Range: 2V–6V supply compatibility supports diverse logic levels.
• Balanced Output Drive: 5.2mA high/low output current ensures strong signal integrity.
• Compact & Reliable: 16-SOIC package with MSL1 (Unlimited) moisture sensitivity for robust assembly.
• Versatile Logic Outputs: Directly provides A<B, A=B, A>B outputs for flexible system integration.

CD74HC85M Applications

• Digital Arithmetic Units: Ideal for ALU designs requiring 4-bit magnitude comparison.
• Control Systems: Used in priority encoders or threshold detectors for decision logic.
• Embedded Systems: Suitable for battery-powered devices due to low Iq.
• Test Equipment: Enables fast data sorting or pattern recognition in diagnostic tools.
• Industrial Automation: Integrates into PLC modules for real-time signal comparison.

Conclusion of CD74HC85M

The CD74HC85M stands out for its speed, low power, and versatility, making it a top choice for 4-bit digital comparison tasks. Its wide voltage range and robust output drive cater to both portable and industrial applications, while ROHS3 compliance ensures adherence to modern environmental standards. Engineers can leverage its efficiency and precision in systems demanding reliable magnitude discrimination, from consumer electronics to automated control platforms.