1 0 obj ",#(7),01444'9=82. The block diagram of MUX with n data sources of b bits wide and s bits wide select line is shown in below figure. Y4 . <>/Font<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 595.32 841.92] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> A 1 to 8 demultiplexer can be implemented using two 1 to 4 demultiplexers. Equipment: One standard Logic Lab Kit and TTL chips. <> 2 0 obj Multiplexer using logic gates Demultiplexers and Decoders Flip-Flops, Shift registers and Counters. A demultiplexer function exactly in the reverse of a multiplexer, that is a demultiplexer accepts only one input and gives many outputs. Some of 1.0 Specifications: In the block diagram below, two two-bit words are present at the multiplexer (MUX) input, word A and word B. stream The truth table of a 1-to-2 demultiplexer is shown below in which the input is routed to Y0 and Y1 depends on the value of select input S. In the table output Y1 is active when the combination of select line and input line are active high, i.e., S F = 11. design basic multiplexer and demultiplexer combinational circuits and to implement them into a data transmission system. <> CHANNEL . %���� This depends on the control input value of the AB. Y3 . This depends on the control input value of the AB. $.' Another key difference exists for MUX and DEMUX is that multiplexer is N to 1 device but demultiplexer … Demultiplexer is a circuit that receives information from a single Line and directs it to one of 2n possible output lines, the selection of a specific output is controlled by the bit combination of n selection lines. One of these 4 inputs will be connected to the output based on the combination of inputs present at these two selection lines. Course Outcomes: On the completion of this laboratory course, the students will be able to: Demonstrate the truth table of various expressions and combinational circuits using logic gates. H X X X Y0 . endobj The demux will work only when the enable is set to logic 1. De-multiplexer takes one single input data line and then switches it to any one of the output lines. <>>> Generally multiplexer and demultiplexer are used together, because of the communication systems are bi directional. hcf4067b 2/10 input equivalent circuit pin description functional diagram truth table pin no symbol name and function 10, 11, 14, 13 a, b, c, d binary control inputs single input and distributes the data over several output channels. None. A demultiplexer, sometimes abbreviated dmux, is a circuit that has one input and more than one output. Department of Computer Science MUX and DeMUX The Demultiplexer (Demux) is a logic circuit … The input bit is considered as data D and it is transmitted to the output lines. Multiplexer (MUX), switches digital data from several input lines onto a single output line in a specified time sequence. Truth table of 4x1 Multiplexer is shown below. This description sounds similar to the description given for a decoder, but a decoder is used to select among many devices while a demultiplexer is used to send a signal among many devices. The Demultiplexer is combinational logic circuit that performs the reverse operation of Multiplexer. A multiplexer (MUX) is a digital switch which connects data from one of n sources to the output. This is a working circuit diagram. Y6 . Multiplexer and Demultiplexer A multiplexer is a circuit that accept many input but give only one output. 00 out of 5 PDF. stream Selection of a specific output line is controlled by the selection input lines. Y2 . 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