The input of the circuit is a multiplexer ADG904.
It is protected by a specific protection system based on TVS to limit the lignthing waves which may subject the circuit.
The input level specified in the datasheet of ADG904 is very low.
The maximum input rated voltage is 2.8V.
We get a transient voltage of 7V for 100 ns !
It's very short, but I can't conclude whether this has an impact on the component.
I need clearly to know what consequence a surge can lead to the multiplexer.
Where can i find the transcient tolerance ? Maybe the foundry have this information....
If womebody can help about transcient....