The 74LVC1G66GW is a single-pole single-throw (SPST) bilateral Analog Switch has two input/output terminals (Y and Z) and an active HIGH enable input pin (E). When E is LOW, the analog switch is turned off. Schmitt-trigger action at the enable input makes the circuit tolerant of slower input rise and fall times across the entire VCC range from 1.65 to 5.5V.