74HC85 4-Bit Comparator IC

The 74HC85 (7485) 4-Bit Magnitude Comparator IC is a high-performance CMOS digital logic device that compares two 4-bit binary inputs (A and B). It delivers three outputs: A > B, A = B, and A < B, enabling simple and efficient implementation of comparison logic in digital circuits. Packaged in a DIP-16, it is easy to use for breadboarding, prototyping, and PCB integration.

🔹 Applications

• Digital logic design and comparison operations

• Sorting and priority encoder circuits

• Arithmetic logic unit (ALU) implementations

• Microcontroller and microprocessor interfacing

• Robotics and automation systems

• DIY electronics and educational kits

🔹 Precautions

• Do not exceed supply voltage of 7V

• Ensure proper grounding to minimize noise interference

• Avoid excessive soldering heat (limit to 260°C for 10s max)

• Handle with care to prevent ESD damage

• Always double-check pin configuration before powering

🔹 Technical Specifications

• IC Type: 4-Bit Magnitude Comparator

• Package: DIP-16

• Logic Family: 74HC (High-Speed CMOS)

• Inputs: Two 4-bit binary words (A0–A3, B0–B3)

• Outputs: A > B, A = B, A < B

• Supply Voltage Range (Vcc): 2V – 6V

• Typical Operating Voltage: 5V

• Input Leakage Current: ±1µA max

• Propagation Delay: ~15ns at 5V

• Fan-out: 10 LS-TTL loads

• Operating Temperature Range: -40°C to +85°C

• Pin Count: 16 pins

📹 Tutorial Video

Watch 74HC85 Comparator IC Tutorial

🔹 Related Categories

• IC’s

• Electronics Components

• Tools and Accessories

🔹 Summary

The 74HC85 (7485) 4-Bit Comparator IC in DIP-16 package is a fast, reliable, and versatile logic device for comparing binary numbers in digital systems. With wide operating voltage support, low power consumption, and simple interface, it is ideal for DIY electronics, robotics, and embedded applications. A must-have for IC’s collections and digital logic projects.