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HD74LS645-1P

Specifications

SKU: 11773927

BUY HD74LS645-1P https://www.utsource.net/itm/p/11773927.html

Parameter Symbol Conditions Min Typ Max Unit
Supply Voltage VCC Operating 4.75 - 5.25 V
Input High Voltage VIH Input 2.0 - VCC V
Input Low Voltage VIL Input 0 - 0.8 V
Output High Voltage VOH IO = -0.4mA 2.4 - VCC - 0.5 V
Output Low Voltage VOL IO = 16mA 0 - 0.5 V
Propagation Delay Time tpd Typical, VCC = 5V, TA = 25°C - 30 - ns
Power Dissipation PD Maximum, VCC = 5V, TA = 25°C - - 100 mW
Operating Temperature Range TA Commercial 0 - 70 °C
Storage Temperature Range TSTG -55 - 150 °C

Instructions for Use

  1. Power Supply:

    • Ensure the supply voltage (VCC) is within the specified range of 4.75V to 5.25V.
    • Connect the ground (GND) pin to a stable 0V reference.
  2. Input Signals:

    • Apply input signals such that the high level (VIH) is at least 2.0V and the low level (VIL) is no more than 0.8V.
    • Avoid floating inputs; use pull-up or pull-down resistors if necessary.
  3. Output Signals:

    • The output high level (VOH) will be at least 2.4V when the output current (IO) is -0.4mA.
    • The output low level (VOL) will be no more than 0.5V when the output current (IO) is 16mA.
  4. Propagation Delay:

    • The typical propagation delay time (tpd) is 30ns under standard conditions (VCC = 5V, TA = 25°C).
  5. Thermal Management:

    • Ensure the device does not exceed the maximum power dissipation of 100mW to avoid overheating.
    • Operate the device within the commercial temperature range of 0°C to 70°C for reliable performance.
  6. Storage:

    • Store the device in an environment with temperatures between -55°C and 150°C to prevent damage.
  7. Handling:

    • Handle the device with care to avoid static discharge, which can damage the internal circuits.
    • Use appropriate ESD protection measures when handling the device.
  8. Mounting:

    • Ensure proper soldering and mounting techniques to avoid mechanical stress on the pins and the device itself.
(For reference only)

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