When a system contains a human interface connector, it becomes vulnerable to large system-level ESD strikes that standard ICs cannot survive. Protection products are typically used to suppress ESD at these connectors. TPD2S017 is a two-channel ESD protection device. In each channel, it contains two-stage TVS diodes and a resistor between the two clamping stages as an isolation. This implementation provides good clamping performance, minimal signal distortion and the support of high data speed.