The ON pin controls the state of the switch. The ON pin is compatible with standard CMOS logic threshold so it can be used in a wide variety of applications. When power is first applied to V_IN a Smart Pull Down is used to keep the ON pin from floating until the system sequencing is complete. Once the ON pin is deliberately driven high (≥V_IH,ON), the Smart Pull Down is disconnected to prevent unnecessary power loss. See Table 8-1 to determine the state of the ON Pin Smart Pull Down state as function of ON pin voltage.