The SN74LVC1G66DCKR is a single-pole single-throw (SPST) Analog Switch designed for 1.65 to 5.5V VCC operation. This device can handle analog and digital signals. The device permits bidirectional transmission of signals with amplitudes of up to 5.5V (peak). NanoFree package technology is a major breakthrough in IC packaging concepts, using the die as the package.