I want to isolate the data between my computer USB and my FT232RL (as usb to UART converter) to communicate with my arduino Like this:
simulate this circuit – Schematic created using CircuitLab
What i want to know is, if usb type A (or usb 3) are bidirectonal in order to select the appropriate Digital Isolator. (Some dc isolators are unidirectional and they are cheaper than the bidirectional ones)
I was whinking USB are unidirectional, but then i saw in wikipedia here:
It says That both lines are driven LOW by the host. So, it is bidirectional?