The TMUX9616PT and TMUX9616NPToffer a thermal shutdown safety feature to make sure the device does not continue to operate once internal temperatures exceed the thermal shutdown temperature defined in the data sheet. When the TMUX9616PT and TMUX9616NPT enter thermal shutdown, the /THERM pin will assert low and all switches will be disabled. The TMUX9616QFPEVM implements an easy to identify thermal shutdown indicator circuit in which an LED will illuminate if the device enters this condition. Once the device exits the thermal shutdown state, the LED will turn off, the switches will assume the appropriate state based on the current digital input conditions, and the /THERM pin will go into a high impedance state.

Figure 7-2 Thermal Shutdown Indicator