MUX for receiving 1MHz ultrasonic signal from multiple transducers
The selection of the MUX will depend on the key parameters that you are designing to maximise/minimise.

If your goal is to maximise SNR, SINAD or minimise phase error you will need different mix of parameters.


For SNR maximising, you'll need to match impedance to ensure energy transfer and minimise cross-talk between channels.
For SINAD, you'll need to consider the bandwidth of the MUX as well to minimise distortion.
For phase error you'll also need to consider electrical TX/RX impedance matching. For details on this - if you are not already familiar with this topic - you can look here (p65/68) or search for ultrasonic reciprocity (often mentionned in flow meter litterature).


You will also need to consider how the Coff and Con parameters aggregate when considering your impedance matching