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SN74AUP2G34: spec check

GARETH OU
Guru 11485 points
Part Number: SN74AUP2G34

Hi

My customer has a question. Is it normal for the SN74AUP2G34DCKR output to be slightly lower than the input?

CH1 is input, CH2 is output, the difference between the front and rear is 0.52V

  • 0
    Guru 317370 points

    This is a buffered device; the input and output are isolated.

    The SN74AUP2G34 drives the output to VCC, but the drive strength is limited. Any load (e.g., a pull-down resistor or a LED) will lower the voltage. See the VOH specification.

    AUP outputs have an impedance of about 60 Ω, so that 0.5 V drop looks like the effect of a load of about 8 mA.