The SENSE input is where a system voltage can be monitored. If the voltage on this pin drops below V_IT, RESET is asserted low. The comparator has a built-in hysteresis to ensure smooth RESET assertions and de-assertions. By connecting a resistor divider network to the SENSE input as shown in the circuit below, VIN is divided down so RESET will assert when the divided down value of VIN reaches VIT (1.226 V). The TLV4011-Q1 is capable of monitoring any input voltage down to 1.226 V.

Figure 7-1 Voltage Monitor