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Product Description 

The 74HC85 is a high-speed CMOS 4-bit magnitude comparator designed for digital comparison applications. It efficiently compares two binary numbers and outputs the relationship between them. With low power consumption and fast switching speed, it is ideal for use in embedded systems, educational projects, and digital logic designsTechnical Specifications

• Product Type: 4-Bit Magnitude Comparator IC

• Model: 74HC85

• Logic Family: High-Speed CMOS (HC)

• Supply Voltage (Vcc): 2V – 6V

• Typical Operating Voltage: 5V

• Input Voltage Range: 0V to Vcc

• Output Type: Standard Digital Output

• Propagation Delay: ~15 ns (at 5V)

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

• Package Type: DIP-16 / SOP-16

• Mounting Type: Through Hole / SMD

Pin Configuration (DIP-16)

• Inputs:

  • A0 – A3 (4-bit input A)

  • B0 – B3 (4-bit input B)

• Cascade Inputs:

  • A > B (Input)

  • A = B (Input)

  • A < B (Input)

• Outputs:

  • A > B (Output)

  • A = B (Output)

  • A < B (Output)

• Other:

  • VCC

  • GND

• Function Description

The 74HC85 is a high-speed 4-bit magnitude comparator used to compare two 4-bit binary numbers (A and B). It provides three outputs indicating whether:

• A > B

• A = B

• A < B

Multiple ICs can be cascaded to compare larger binary numbers.

Applications

• Digital systems comparison

• Microcontroller interfacing

• Arithmetic logic units (ALU)

• Sorting circuits

• Embedded systems