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In addition to the family of TTL ICs that support the function of a multiplexer is a family of CMOS ICs. Despite the fact it is the family of TTL ICs that support more functions than the CMOS multiplexer. For the working principle of the multiplexer IC CMOS family is actually tantamount to a multiplexer circuit, or IC TTL logic gates. That should be all referring to the real multiplexer function, namely the determination of output lines which represent the number of input lines. The use of symbols is possible between TTL and CMOS IC has a different but actually run the same rules. Gaining Upr reference if you are interested in using family of CMOS IC 4556 series in particular, I include also the truth table below: INPUT OUTPUT E A0 A1 O0 O1 O2 O3 L L L L H H H L H L H L H H L L H H H L H L H H H H H L H X X H H H H L = LOW H = HIGH

This is a Simple Complementary metal–oxide–semiconductor connect switch circuit diagram , CMOS technology is used in microprocessors, microcontrollers, static RAM, and other digital logic circuits. This connect switch does not rely on mains hum for switching-It-can be used with battery powered circuits.  Simple Cmos Connect Switch Circuit Diagram Schmitt trigger IC1 forms a 100 kHz oscillator and IC2a which is biased into the linear region, amplifies the output and charges CI via the diode. IC2b acts as a level detector. When the sensor is touched, the oscillator signal is severely attenuated which causes CI to discharge and IC2b to change state.Sourced by : Circuitsstream

The circuit below uses a CMOS dual D flip flop (CD4013) to toggle a relay or other load with a momentary push button. Several push buttons can be wired in parallel to control the relay from multiple locations.A high level from the push button is coupled to the set line through a small (0.1uF) capacitor. The high level from the Q output is inverted by the upper transistor and supplies a low reset level to the reset line for about 400 mS, after which time the reset line returns to a high state and resets the flip flop. The lower flip flop section is configured for toggle operation and changes state on the rising edge of the clock line or at the same time as the upper flip flop moves to the set condition. The switch is debounced due to the short duration of the set signal relative to the long duration before the circuit is reset. CMOS Toggle Flip Flop Using Push Button Circuit Diagram  The Q or Qbar outputs will only supply about 2 mA of current, so a buffer transistor or power MOSFET...

It is a very simple Electronic circuit project of LED traffic lights circuit. LED traffic Light circuit controls 6 LEDs (red, yellow and green) for both north/south directions and east/west directions. The timing sequence is generated using a CMOS 4017 decade counter and a 555 timer. Counter outputs 1 through 4 are wire ORed using 4 diodes so that the (Red - North/South) and (Green - East/West) LEDs will be on during the first four counts. The fifth count (pin 10) illuminates (Yellow - East/West) and (Red - North/South). Counts 6 through 9 are also wire ORed using diodes to control (Red - East/West) and (Green - North/South). Count 10 (pin 11) controls (Red - East/West) and (Yellow - North/South). LED Traffic Lights Circuit Diagram: The time period for the red and green lamps will be 4 times longer than for the yellow and the complete cycle time can be adjusted with the 47K resistor. The eight 1N914 diodes could be subsituted with a dual 4 input OR gate (CD4072).