IC 4066 / CD4066 / HEF4066

CD4066BE DIP
The CD4066B device is a quad bilateral switch
intended for the transmission or multiplexing of
analog or digital signals. It is pin-for-pin compatible
with the CD4016B device, but exhibits a much lower
on-state resistance. In addition, the on-state
resistance is relatively constant over the full signalinput
range.

The CD4066B device consists of four bilateral
switches, each with independent controls. Both the p
and the n devices in a given switch are biased on or
off simultaneously by the control signal. As shown in
Figure 17, the well of the n-channel device on each
switch is tied to either the input (when the switch is
on) or to VSS (when the switch is off). This
configuration eliminates the variation of the switchtransistor
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 constant on-state
impedance over the input-signal range. However, for
sample-and-hold applications, the CD4016B device is
recommended.

DATASHEET:
http://www•ti•com/lit/ds/symlink/cd4066b•pdf