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Multiplexer is an electronic circuit that functions to select one among many inputs into one output. The number of bits from the selector (selector) to determine the number of input channels can be received. With provisions are: I = 2 ^ s where: I: Number of input channels can be received s: The number of bits of the selector or the number of lines of voters for example if we want the 14 input channels, then the minimum number of bits of selectors who should we meet is 4 bits. Where is the selector 4 bits can represent 16 channels of input.

This is a switch circuit using a digital multiplexer 4066 Ic , their keys are ES8 ES1 to 4066 and each contains four switches. When the channel is selected first, and ES1 ES2 ES3 are closed and open, which prevents cross-over between the two channels is the grounding of the channel is not in use. The bandwidth of the multiplex circuit is about 8 MHz and the consumption is 1 mA. When the multiplexer circuit is connected to a load impedance of 75 Ω, the circuit will result in some loss of signal due to internal resistance of the keys. This can be compensated for by connecting an amplifier output. Multiplexer Switch with 4066 Circuit Diagram

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