The source (Sx) pins of the device remain in the high impedance (Hi-Z) state, and the device performance remains within the leakage performance specifications when the supplies of TMUX7462F are removed (V_DD/ V_SS = 0 V or floating) or at a level that is below the undervoltage (UV) threshold. Powered-off protection minimizes system design complexity by removing the need to control the system's power supply sequencing. The feature prevents errant voltages on the input source pins from reaching the rest of the system and maintains isolation when the system is powering up. Without powered-off protection, signal on the input source pins can back-power the supply rails through internal ESD diodes and cause potential damage to the system.

A GND reference must always be present to for proper operation. Source and drain voltage levels of up to ±60 V are blocked in the powered-off condition.