The TPD2S017 device stays passive and has low leakage during normal operation when the voltage at the input of each channel is from 0 V to V_CC and activates when that voltage exceeds one forward diode drop above V_CC or below ground. During IEC ESD events, contact transient voltages as high as ±11 kV can be suppressed. When the voltages on the protected lines fall below the trigger voltage, the device reverts back to the low leakage passive state.