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TPD12S520 question

Other Parts Discussed in Thread: TPD12S520

Hi,

My customer has some questions about our TPD12S520. this is block digram of our part. 1. how to connect together of HOTPLUG_DET_IN and HOTPLUG_DET_OUT in our device? is it MOS or BJT between them?  2. what is the LV Supply voltage to make the MOS or BJT open? 3. According to the pin name, HOTPLUG_DET_IN should be input and HOTPLUG_DET_OUT should be output, can we invert the input and output? thanks

  • Hi,

    Type is MOS. You will need to pull up HPD_OUT to 5V (conveniently located in the HDMI connector) and pull-up HPD_IN to your logic voltage of the core chip. You need to connect the +/- 8-kV rated OUT pin to the connector side and +/- 2-kV rated IN pin to the system side, so there's really no reason to invert the IN and OUT pins, though that should work.

    Regards,