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SN74LVC16244A: output clamping current

Kelly Bai
Intellectual 1330 points
Part Number: SN74LVC16244A

hi team,

the datasheet of SN74LVC16244A listed the maximum clamp current is 50mA and maximum current from VCC to GND is 100mA. so,

    1. What’s the risk if the buffer continuously has a periodical output at the 50mA clamping status (100ms per second)?
    2. What’s the risk if the buffer continuously has a 4*BITs periodical output at the 50mA clamping status (100ms per second)?

thanks.

  • 0
    Guru 316420 points

    Please note that clamp current and output current are different things.

    Footnote (1) says:

    These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

    4 × 50 mA = 200 mA exceeds the absolute maximum rating and will damage the device.

    50 mA does not exceed the absolute maximum rating and will not immediately damage the device, but the output voltage is no longer guaranteed, so it is not guaranteed that you will be able to drive your load.

    What is the actual problem you're trying to solve?