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Digital Isolators (ISO7220x / ISO7221x) function table

Other Parts Discussed in Thread: ISO7240CF, ISO7421FE, ISO7420FE

Hi all...

  given the truth table of the isolator, what's the best way to invert the output signal when the input side is not powered up ?

  as I use the isolator to manage a PWM, I don't want that the external device (output side) see a PWM of 100% when my device (input side) is powered down

  is there a device with such table or do I have to invert the out signal with another IC ?

            thanks

                            Paolo