Hello, I am attempting to use four 40khz ultrasonic transducers. Please see my circuit. Basically I am imputing a -5 to 5v square wave into Y and selecting say the N sensor connected at pin Y0 so that it can transmit a signal to the S sensor through the air. The signal S receives is selected to input to X0 and out through X. I need to be able to make each transducer to be able to switch between being a tx and rx but I am getting a lot of crosstalk in the 200-1000 mv range. It seems like the signal is coming in through Y and outputting mainly through Y0 but still outputting through Y1,Y2,Y3. Y0 is connected to X1, and even though X1 is not selected as an input, X still outputs its signal.
Do I need a different chip? Any advice?
Hope this makes sense.
Note: Y is for TX and X is for RX. N is for North Sensor, S is for South Sensor, etc.....
