CMOS Quad Bilateral Switch

CMOS Quad Bilateral Switch - CD4066B


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 signal-input 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 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 constant on-state impedance over the input-signal range. However, for sample-and-hold applications, the CD4016B device is recommended.


  • 15-V Digital or ±7.5-V Peak-to-Peak Switching
  • 125-Ω Typical On-State Resistance for
    15-V Operation
  • Switch On-State Resistance Matched to Within
    5 Ω Over 15-V Signal-Input Range
  • On-State Resistance Flat Over Full
    Peak-to-Peak Signal Range
  • High ON/OFF Output-Voltage Ratio:
    80 dB Typical at fis = 10 kHz, RL = 1 kΩ
  • High Degree of Linearity: <0.5% Distortion Typical at fis = 1 kHz, Vis = 5 Vp-p
    VDD – VSS ≥ 10 V, RL = 10 kΩ
  • Extremely Low Off-State Switch Leakage, Resulting in Very Low Offset Current and High Effective Off-State Resistance: 10 pA Typical at VDD – VSS = 10 V, TA = 25°C
  • Extremely High Control Input Impedance
    (Control Circuit Isolated From Signal Circuit):
    1012 Ω Typical
  • Low Crosstalk Between Switches: –50 dB Typical at fis = 8 MHz, RL = 1 kΩ
  • Matched Control-Input to Signal-Output Capacitance: Reduces Output Signal Transients
  • Frequency Response,
    Switch On = 40 MHz Typical
  • 100% Tested for Quiescent Current at 20 V
  • 5-V, 10-V, and 15-V Parametric Ratings

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Parametrics Compare all products in Analog Switches/Muxes

Number of Channels (#)
Power Supply Type
Vss (Min) (V)
Vss (Max) (V)
Vdd (Min) (V)
Vdd (Max) (V)
Ron (Typ) (Ohms)
Bandwidth (MHz)
Operating Temperature Range (C)
Package Size: mm2:W x L (PKG)
Package Group
Supply Range (Max)
Ron (Max) (Ohms)
Input/Output Continuous Current (Max) (mA)
Supply Current (Typ) (uA)
Supply Current (Max) (uA)
ESD Charged Device Model (kV)
VIL (Max) (V)
VIH (Min) (V)
CD4066B CD4066B-MIL CD4066B-Q1
1:1 SPST    1:1 SPST    1:1 SPST   
4    4    4   
-15      -15   
0      0   
3      3   
18      18   
125    125    125   
40      40   
  Military    Automotive   
-55 to 125    -55 to 125    -40 to 125   
See datasheet (PDIP)
14SO: 80 mm2: 7.8 x 10.2(SO)
14SOIC: 52 mm2: 6 x 8.65(SOIC)
14TSSOP: 32 mm2: 6.4 x 5(TSSOP)   
See datasheet (CDIP)    14SOIC: 52 mm2: 6 x 8.65(SOIC)   
18      18   
1300    240    1300   
10      10   
0.01      0.01   
30      5   
Dual supply      Dual supply   
1.5      1   
0.5      0.5   
2      2   
Vdd*.7      Vdd*.7   

Other qualified versions of CD4066B

Version Part Number Definition
Automotive CD4066B-Q1 Q100 devices qualified for high-reliability automotive applications targeting zero defects
Military CD4066B-MIL QML certified for Military and Defense Applications