DIY: 3 in, 1 out spdif toslink switch

using a very cheap and easy to find cd4052 cmos analog switch IC.

 

quick wiring to test my idea.

 

yes, the circuit works - I tested all 3 inputs and when you select the right binary 2-bit address the correct input TOSLINK port is repeated out of the single TOSLINK output port (the one that is 'open', or shutterless happens to be the output port).

 

Done