74 series Digital Integrated Circuits
74HC85AP
74HC85AP

 

74HC85AP

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Category: 74 series Digital Integrated Circuits Available (Qty:9999999)
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Description

BUY 74HC85AP https://www.utsource.net/itm/p/1558779.html
4-bit magnitude comparator - Description: 4-Bit Magnitude Comparator ; Logic switching levels: CMOS ; Number of pins: 16 ; Output drive capability: +/- 5.2 mA ; Power dissipation considerations: Low Power or Battery Applications ; Propagation delay: 18@5V ns; Voltage: 2.0-6.0 V

Below is the parameter table and instructions for the 74HC85AP 4-bit magnitude comparator.

Parameter Table

Parameter Symbol Min Typ Max Unit Conditions
Supply Voltage VCC 2.0 4.5 6.0 V
Input Low Voltage VIL 0.1 - 0.8 V VCC = 4.5V
Input High Voltage VIH 2.0 - 3.5 V VCC = 4.5V
Output Low Voltage VOL 0.1 0.2 0.4 V IOL = 4mA
Output High Voltage VOH 2.4 3.6 4.4 V IOH = -0.4mA
Input Leakage Current IIL -1 - 1 μA VCC = 4.5V
Output Leakage Current IOL -1 - 1 μA VCC = 4.5V
Propagation Delay Time tpd 10 22 40 ns VCC = 4.5V, TA = 25°C
Power Consumption Ptot - 20 - mW fmax = 1MHz, TA = 25°C

Instructions

  1. Power Supply:

    • Connect VCC to the positive supply voltage (2.0V to 6.0V).
    • Connect GND to the ground.

  2. Input Connections:

    • Connect the A0 to A3 inputs to the first 4-bit binary number.
    • Connect the B0 to B3 inputs to the second 4-bit binary number.
    • Connect the cascading inputs (A<B, A=B, A>B) to the corresponding outputs of another 74HC85AP if cascading multiple comparators.

  3. Output Interpretation:

    • A<B (Output Low): Indicates that the binary number on the A inputs is less than the binary number on the B inputs.
    • A=B (Output Low): Indicates that the binary numbers on the A and B inputs are equal.
    • A>B (Output Low): Indicates that the binary number on the A inputs is greater than the binary number on the B inputs.

  4. Cascading Multiple Comparators:

    • To compare more than 4 bits, cascade additional 74HC85AP comparators.
    • Connect the cascading outputs of the lower-order comparator to the cascading inputs of the higher-order comparator.

  5. Operating Conditions:

    • Ensure the operating temperature range is between -40°C and 85°C.
    • Keep the supply voltage within the specified range to avoid damage to the device.

  6. Handling:

    • Handle with care to avoid static discharge, which can damage the IC.
    • Use appropriate ESD protection when handling the device.

By following these instructions, you can effectively use the 74HC85AP 4-bit magnitude comparator in your digital circuits.

(For reference only)

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