Description
   The IW4066B is a quad bilateral switch intended for the transmission or multiplexing of analog or digital signals.
   The IW4066B consists of four independent bilateral switches. A single control signal is required per switch Both the p and the n device in a given switch are biased on or off simultaneously by the control signal.(As show Fig.1.)The well of the n-channel device on each switch is either tied to the input when the switch is on or to GND when the switch is off. This configuration eliminates the variationof the switch –transistor threshold voltage with input signal, and thus keeps the on-state resistance low over the full operating-signal range.
   The advantages over single-channel switches include peak input- signal voltage swings equal to the full supply voltage, and more

FEATUREs
• Operating Voltage Range: 3.0 to 18 V
• Maximum input current of 1 at 18 V over full package
   temperature range;100 nA at 18 V and 25 °C
• Noise margin (over full package temperature range):
   1.0 V min @ 5.0 V supply
   2.0 V min @ 10.0 V supply
   2.5 V min @ 15.0 V supply