Hallo!

@ Hicki

Ich verstehe nicht ganz was du machen willst, habe aber versucht das zu skizzieren, was ich mir bisher vorstellen kann.
Code:
                            |\   RX1 .-------.
     RX >-----------+-------| >----->|       |
                    |       |o       |       |
                    |        |       |       |
    USB       +-----|--------+       | Chip1 |
              |     |        |       |       |
              |     |        o|  TX1 |       |
     TX <-----|-----|---+---< |-----<|       |
              |     |   |    \|      '-------'
              |     |   |
              |     |   |
              |     |   |
              |     |   |   |\   RX2 .-------.
              |     +---|---| >----->|       |
              |         |   |o       |       |
              |         |    |       |       |
              |     +---|----+       | Chip2 |
              |     |   |    |       |       |
              |     |   |    o|  TX2 |       |
              |     |   +---< |-----<|       |
              |     |        \|      '-------'
              |     |
              |     |     74HC(T)125
              A     A

             1=L   2=L

              Auswahl

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