02-05-2011, 09:59 AM
PRESENTED BY:
Mohatsim Billah
Moshsaka Akhter
[attachment=13187]
What is a multiplexer ?
A multiplexer(data selector) or mux is a digital logic circuit that selects one of several analog or digital input signals and forwards the selected input into a single line. A multiplexer of 2n inputs has n select lines, which are used to select which input line to send to the output.
Criterion based on input output
Digital Multiplexers are constructed from individual analogue switches. Generally, multiplexers have an even number of data inputs. Based this property different types of multiplexer has being constructed.
A two input line multiplexer.
A 4 to 1 input line multiplexer.
A 4 to 2 input line multiplexer.
A 8 to 1 input line multiplexer.
A quad two input line multiplexer.
Functional diagram of MUX
Logical Diagram of a 2-to-1 input multiplexer
The Four-Input Multiplexer
The same basic idea of 2 input mux can be used to form 4-INPUT multiplexer. A circuit diagram for a possible 4-LINE to 1-LINE data selector/multiplexer is shown in the figure. Here, the output y is equal to the input i0 , i1 , i2 , i 3 depending on whether the select lines s1 and s0 have values 00, 01, 10, 11 for s1 and s0 respectively. That is, the output y is selected to be equal to the input of the line given by the binary value of the select lines s1 s0
Example of a 4 line to 1 line MUX implementation according to the following the truth table (Y=A’*B’+A*B) & showing block diagram .
Eight-Input Multiplexer
74ALS151 eight input multiplexer is shown in figure 3.0 proximate
slide. This multiplexer has an enable input E’ and provide both the normal and inverted outputs. When E’=0 the select inputs S2 S1S0 will
select data input(from I0 to I7) for passage to the output Z. When E’=1
the multiplexer is disable so that Z=0 regardless of the select input
code.
The operation is summarized in the next slide with logic diagram and block diagram.
Block diagram of 74ALS151
Application of multiplexer
1.Data routing.
2.Parallel to Serial conversion
3.Operation sequencing
4.Logic function generation.
Application of multiplexer (con)
In telecommunication, a multiplexer is a device that combines several input information signals into one output signal, which carries several communication channel, by means of some multiplexing technique.
Mohatsim Billah
Moshsaka Akhter
[attachment=13187]
What is a multiplexer ?
A multiplexer(data selector) or mux is a digital logic circuit that selects one of several analog or digital input signals and forwards the selected input into a single line. A multiplexer of 2n inputs has n select lines, which are used to select which input line to send to the output.
Criterion based on input output
Digital Multiplexers are constructed from individual analogue switches. Generally, multiplexers have an even number of data inputs. Based this property different types of multiplexer has being constructed.
A two input line multiplexer.
A 4 to 1 input line multiplexer.
A 4 to 2 input line multiplexer.
A 8 to 1 input line multiplexer.
A quad two input line multiplexer.
Functional diagram of MUX
Logical Diagram of a 2-to-1 input multiplexer
The Four-Input Multiplexer
The same basic idea of 2 input mux can be used to form 4-INPUT multiplexer. A circuit diagram for a possible 4-LINE to 1-LINE data selector/multiplexer is shown in the figure. Here, the output y is equal to the input i0 , i1 , i2 , i 3 depending on whether the select lines s1 and s0 have values 00, 01, 10, 11 for s1 and s0 respectively. That is, the output y is selected to be equal to the input of the line given by the binary value of the select lines s1 s0
Example of a 4 line to 1 line MUX implementation according to the following the truth table (Y=A’*B’+A*B) & showing block diagram .
Eight-Input Multiplexer
74ALS151 eight input multiplexer is shown in figure 3.0 proximate
slide. This multiplexer has an enable input E’ and provide both the normal and inverted outputs. When E’=0 the select inputs S2 S1S0 will
select data input(from I0 to I7) for passage to the output Z. When E’=1
the multiplexer is disable so that Z=0 regardless of the select input
code.
The operation is summarized in the next slide with logic diagram and block diagram.
Block diagram of 74ALS151
Application of multiplexer
1.Data routing.
2.Parallel to Serial conversion
3.Operation sequencing
4.Logic function generation.
Application of multiplexer (con)
In telecommunication, a multiplexer is a device that combines several input information signals into one output signal, which carries several communication channel, by means of some multiplexing technique.
