The ESD752 and ESD762 are dual channel TVS diodes which are used to provide a path to ground for dissipating ESD events on USB-PD or industrial IO signal lines. As the current from the ESD passes through the TVS, only a small voltage drop is present across the diode. This is the voltage presented to the protected IC. The low R_DYN of the triggered TVS holds this voltage (V_CLAMP) to a safe level for the protected IC.