Does MUX have enable input?

Does MUX have enable input?

multiplexers usually have an ENABLE input that can be used to control the multiplexing function. When this input is enabled, that is, when it is in logic ‘1’ or logic ‘0’ state, depending upon whether the ENABLE input is active HIGH or active LOW respectively, the output is enabled. The multiplexer functions normally.

Can we make MUX using decoder?

You will need four inverters (NOT gates), four 5-input AND gates (well, they don’t come as 5-input devices, so either use cascaded 2-input or 3-input or four 8-input AND gates) and a 4-input OR gate. The inputs to the decoder will represent the MUX select lines.

What are the 2 input ICS required to design 2/4 line decoder?

2 to 4 Line Decoder Truth Table. In this type of decoders, decoders have two inputs namely A0, A1, and four outputs denoted by D0, D1, D2, and D3.

What is the role of an enable pin in multiplexer and decoder IC?

In general, enable pin in multiplexers, de multiplexer, decoder and encoder ensures the functioning of the hardware ie “enables” the function of the logic circuit.

What is enable in mux?

An enable input makes the multiplexer operate. When EN = 0, the output is High-Z or less commonly LOW (depending on the specific device). When EN = 1, the multiplexer performs its operation depending on the selection line.

How many gates do I need for MUX decoder?

You will need four inverters (NOT gates), four 5-input AND gates (well, they don’t come as 5-input devices, so either use cascaded 2-input or 3-input or four 8-input AND gates) and a 4-input OR gate. The inputs to the decoder will represent the MUX select lines.

Can a decoder be used as a de multiplexer?

Decoder as a De-Multiplexer – A Decoder with Enable input can function as a demultiplexer. A demultiplexer is a circuit that receives information from a single line and directs it to one of possible output lines. A demultiplexor receives as input, selection lines and one Input line.

How many lines do I need to control a 4>1 MUX?

Assuming your 4>1 MUX uses two lines to select the appropriate output, you will need 5 lines to control your cascaded MUXes. 2 lines to address MUX1, 2 lines to address MUX2 and a fifth line to select the output from the 2>1 MUX. As you will only ever be selecting one of 8 inputs, your two lines that control each 4>1 MUX can be commoned.

How to construct a decoder with two inputs?

To construct a decoder, we require to know the number of all possible output lines that totally depends on the given input. So, if n represents given input lines then possible output lines would be 2 n . Decoder with two inputs would give 4 outputs (n=2,2 2 that is 4). Step 1.