I want to protect sensors that use 3.3V I2C from strong ESD. After searching internet for a while I found that LCO3-3.3 provides protection from 30kV. However, I'm still not sure if the one can be used for protecting 3.3V I/O.
(1) Its max. stand-off voltage is 3.3V, and min. breakdown voltage is 3.3V. Would it mean that 3.31V or 3.32V will be clamped and the I2C communication will be interrupted?
(2) max. clamping voltage is 17V. Then would my 3.3V I2C device be broken by ESD due to the still high voltage after being clamping?
(3) Between uni-direction and bi-directional TVS diode array, which is appropriate for I2C port protection?