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MC74VHCT257AD

Specifications

SKU: 6411638

BUY MC74VHCT257AD https://www.utsource.net/itm/p/6411638.html
Quad 2-Channel Multiplexer with 3-State Outputs
Parameter Symbol Conditions Min Typ Max Unit
Supply Voltage VCC Operating 4.5 - 5.5 V
Input Low Voltage VIL VCC = 5V 0 - 1.5 V
Input High Voltage VIH VCC = 5V 3.5 - 5.5 V
Output Low Voltage VOL IOL = 8 mA, VCC = 5V 0 - 0.4 V
Output High Voltage VOH IOH = -0.4 mA, VCC = 5V 4.6 - 5.5 V
Input Leakage Current IIL VIN = 0V or VCC -1 0 1 μA
Output Leakage Current IOL VOUT = 0V or VCC -1 0 1 μA
Propagation Delay Time tpd VCC = 5V, TA = 25°C - - 12 ns
Power Dissipation PD Continuous - - 100 mW

Instructions for Use:

  1. Supply Voltage (VCC):

    • Ensure the supply voltage is within the operating range of 4.5V to 5.5V.
    • Connect VCC to the positive power supply and GND to the ground.
  2. Input Voltages (VIL, VIH):

    • Inputs should be within the valid logic levels: 0V to 1.5V for low and 3.5V to 5.5V for high.
    • Avoid floating inputs; use pull-up or pull-down resistors if necessary.
  3. Output Voltages (VOL, VOH):

    • Outputs will be 0V to 0.4V for low and 4.6V to 5.5V for high when driven by the specified currents.
    • Ensure the load does not exceed the output current capabilities.
  4. Leakage Currents (IIL, IOL):

    • Account for input and output leakage currents in your circuit design, especially in high-impedance applications.
  5. Propagation Delay (tpd):

    • The propagation delay time is the maximum time it takes for the output to change state after the input changes.
    • This value is crucial for timing considerations in digital circuits.
  6. Power Dissipation (PD):

    • The device can dissipate up to 100 mW continuously.
    • Ensure proper heat dissipation if operating near the maximum power dissipation.
  7. Storage and Handling:

    • Store the device in a dry, static-free environment.
    • Handle with care to avoid damage from electrostatic discharge (ESD).
  8. Mounting:

    • Follow standard surface mount technology (SMT) guidelines for mounting the device on a PCB.
    • Ensure good thermal and electrical connections.
  9. Testing:

    • Test the device under typical operating conditions to verify functionality.
    • Use a multimeter to check for correct voltages at the inputs and outputs.
(For reference only)

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