An electronic device includes a multiplexer (MUX), aswitching array and logic circuitry. The MUX includes multipleinput ports and an output port, and is configured to receive,via the input ports, multiple input signals, and to output,via the output port, a selected signal among the input signals.The switching array is coupled to the input ports of the MUXand is configured to receive the input signals and to connector disconnect between each input signal and a respective inputport. The logic circuitry is electrically coupled to theswitching array and to the MUX, and is configured to controlthe switching array to connect at least the selected signalthat the MUX is outputting, and to disconnect all the inputsignals other than the at least selected signal.
