The HEF4016BP is a quadruple bilateral Analog Switch has two input/output terminals (Y/Z) and an active HIGH enable input (E). When E is connected to VDD a low impedance bidirectional path between Y and Z is established (ON condition). When E is connected to VSS the switch is disabled and a high impedance between Y and Z is established (OFF condition). Current through a switch will not cause additional VDD current provided the voltage at the terminals of the switch is maintained within the supply voltage range.