What is Mux and demux and their use?
A multiplexer is used to convert several analog or digital signals into a single o/p signal through different control lines. Both the Mux and Demux are used to transmit the data over a network in less bandwidth. But multiplexer is used at the transmitter end whereas the Demux is used at the receiver end.
Which gate is used in demultiplexer?
IC 74LS154 can be used as a decoder-demultiplexer IC as it performs both operations. 1.2 Design a 1:2 demux using basic universal logic gates. NAND & NOR gates are called as universal logic gates. The 1:2 demux logic can be implemented using only NAND gates.
How many and gates are required for a 1/4 demultiplexer?
From the above Boolean expressions, a 1-to-4 demultiplexer can be implemented by using four 3-input AND gates and two NOT gates as shown in figure below. The two select lines enable a particular AND gate at a time.
How many OR gates are required for a 1 to 8 demultiplexer?
How many AND gates are required for a 1-to-8 multiplexer? Explanation: The number of AND gates required will be equal to the number of outputs in a demultiplexer, which are 8.
Why is the first gate enabled in demultiplexer?
The single data input is sent to one of the four outputs as per the selection line input. If the selection line input S 1 S 0 = 00, the first AND gate in the above circuit diagram gets enabled. It is because both the AND gate receives the inverted input.
What are the inputs and outputs of a demultiplexer?
1 to 4 Demultiplexer. The 1 to 4 demultiplexer consists of one input, four outputs, and two control lines to make selections The below diagram shows the circuit of 1 to 4 demultiplexer. The input bit is Data D with two select lines A and B. The input bit D is transmitted to four output bits Y0, Y1, Y2, and Y4.
How many lines are in a demultiplexer 1 to 16?
1 to 16 demultiplexer has one input data, four select lines A, B, C and D and 16 output lines Y0 to Y15. This is implemented using AND and NOT gate. 1 to 16 demultiplexer is implemented using the logic circuit below. This can be implemented using 1 to 8 demultiplexer, 1 to 4 demultiplexer and 1 to 2 demultiplexer.
How to design demultiplexer 1 to 2 logic diagram?
From the above truth table and the derived Boolean Expressions, the logic diagram of 1-to-2 demultiplexer can be designed using two AND gates and one NOT gate as shown in below figure. When the select line S = 0, the first AND gate (A1) is enabled, while the second AND gate (A2) is disabled.