I am designing an HDMI switch with two inputs and one output. I found a multiplexer that can be used specifically for this purpose (HD3SS215) but it needs a 3.3 V power supply.
Can I use the 5 V power port from the HDMI alongside a simple regulator as a power supply or not? MUX draws at most 3.2 mA so that part isn't a problem. I don't really understand the purpose of that power port so I am not sure if it can be shared.