The CD4051 analog multiplexers demultiplexers are digitally controlled analog switches having low “ON” impedance and very low “OFF” leakage currents. Control of analog signals up to 15Vp-p can be achieved by digital signal amplitudes of 3−15V. For example, if VDD = 5V, VSS = 0V and VEE = −5V, analog signals from −5V to +5V can be controlled by digital inputs of 0−5V. The multiplexer circuits dissipate extremely low quiescent power over the full VDD−VSS and VDD−VEE supply voltage ranges, independent of the logic state of the control signals. When a logical “1” is present at the inhibit input terminal all channels are “OFF”.

CD4051BC is a single 8-channel multiplexer having three binary control inputs. A, B, and C, and an inhibit input. The three binary signals select 1 of 8 channels to be turned “ON” and connect the input to the output.

Features:

• Wide range of digital and analog signal levels: digital 3 – 15V, analog to 15Vp-p.
• Low “ON” resistance: 80Ω (typ.) over entire 15Vp-p signal-input range for VDD − VEE = 15V.
• High “OFF” resistance: channel leakage of ±10 pA (typ.) at VDD − VEE = 10V.
• Logic level conversion for digital addressing signals of 3 – 15V (VDD − VSS = 3 – 15V) to switch analog signals to 15 Vp-p (VDD − VEE = 15V).
• Matched switch characteristics: RON = 5Ω (typ.) for VDD − VEE = 15V.
• Very low quiescent power dissipation under all digital-control input and supply conditions: 1 μ W (typ.) at VDD − VSS = VDD − VEE = 10V.
• Binary address decoding on chip.