The TMUX7436F enters into Fault mode when any of the input signals on the source (Sx) pins exceed V_DD or V_SS by a threshold voltage V_T. Under the overvoltage condition, the switch input experiencing the fault automatically turns off regardless of the logic status, and the source pin becomes high impedance with negligible amount of leakage current flowing through the switch. For more information about how the drain pain (Dx) behavior under the Fault mode can be programmed, see Section 8.3.2.4.

In the Fault mode, the general fault flag (FF) is asserted low. Table 8-1 provides how the specific flag (SF) is asserted low depending on the status of the logic control pins SELx and EN.

The overvoltage protection is provided only for the source (Sx) input pins. The drain (Dx) pin, if used as signal input, must stay in between V_DD and V_SS at all times since no overvoltage protection is implemented on the drain pin.