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74HC155
74HC155

 

74HC155

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Category: Elec-component Available (Qty:9999999)
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Description

BUY 74HC155 https://www.utsource.net/itm/p/1150031.html
Dual 2-to-4-line Decoders/Demultiplexers

Parameter Symbol Min Typ Max Unit Conditions
Supply Voltage VCC 2.0 - 6.0 V
Output Low Voltage VOL 0.0 0.1 0.2 V IOL = 4 mA, VCC = 4.5 to 5.5 V
Output High Voltage VOH 2.4 2.7 3.4 V IOH = -4 mA, VCC = 4.5 to 5.5 V
Input Low Voltage VIL 0.0 0.8 1.5 V VCC = 4.5 to 5.5 V
Input High Voltage VIH 3.5 4.0 VCC - 1.5 V VCC = 4.5 to 5.5 V
Propagation Delay Time tpd - 10 25 ns VCC = 4.5 to 5.5 V, TA = 25°C
Power Dissipation PD - - 100 mW Per Package
Operating Temperature Range TA -40 - 85 °C
Storage Temperature Range TSTG -65 - 150 °C

Instructions for Using 74HC155

  1. Power Supply:

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

  2. Input Selection:

    • The 74HC155 is a dual 4-line to 2-line data selector/multiplexer.
    • Use the A0 and A1 inputs to select one of the four data inputs (D0 to D3) for each of the two multiplexers.

  3. Enable Inputs:

    • The G1 and G2 inputs are active low enable pins.
    • Set G1 or G2 to low to enable the corresponding multiplexer.
    • If both G1 and G2 are high, the outputs are in a high-impedance state.

  4. Output Pins:

    • Y0 and Y1 are the output pins for the first multiplexer.
    • Y2 and Y3 are the output pins for the second multiplexer.
    • When enabled, the selected input (based on A0 and A1) will be reflected on the corresponding output pin.

  5. Propagation Delay:

    • The propagation delay time (tpd) is the time it takes for a change at the input to appear at the output. It is typically around 10 ns at room temperature and standard supply voltages.

  6. Temperature Considerations:

    • Ensure the operating temperature (TA) stays within the range of -40°C to 85°C.
    • Store the device in temperatures between -65°C and 150°C.

  7. Power Dissipation:

    • The maximum power dissipation for the package is 100 mW. Ensure proper heat dissipation if operating near this limit.

  8. Handling:

    • Handle the device with care to avoid damage from electrostatic discharge (ESD).

By following these instructions, you can effectively use the 74HC155 in your digital circuits.

(For reference only)

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