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Which IC used in Demux?
The IC CD4052 is a CMOS based high voltage Multiplexer and Demultiplexer IC. The IC is commonly used in circuit where a 4:1 MUX or a 1:4 DEMUX is required in a Programmable Logic circuit Design. It can handle both analog and digital voltages hence can be used in Analog to Digital and Digital to Analog converters.
What is demux in digital electronics?
A Demultiplexer or Demux in digital electronics is a circuit that takes a single input line and routes it to one of several digital output lines. A Demultiplexer of 2n outputs has n select lines, which are used to select which output line to send the input. A Demultiplexer is also called a data distributor.
What is the IC number for 1/4 demux?
These are available in different IC packages and some of the most commonly used demultiplexer ICs includes 74139 (dual 1:4 DEMUX), 74138 (1:8 DEMUX), 74237 (1:8 DEMUX with Address Latches), 74154 (1:16 DEMUX), 74159 (1:16 DEMUX open collector type), etc.
What is IC 74138?
IC 74138 is a Logical Decoder IC. It also has a demultiplexing facility. The IC 74138 is available in the market with the name of 74LS138. It is a 3 to 8 decoder IC. The internal circuit of this IC is made of high-speed Schottky barrier diode.
What is the function of IC 74153?
74153 is a data multiplexer or data selector IC. It has inverters and drivers that supply fully complementary data selection to the AND-OR-NOT gates. It also has on-chip and binary decoding. It has 2 1 of 4 data multiplexer in one IC package.
How many demux channels does a demultiplexer need?
Demultiplexer needs And gates equal to the number of output channels and NOT gates equal to the number of Control signals. 1 to 4 Demultiplexer? 1 to 4 means that this demultiplexer can distribute I data line into 4 separate data lines. so this Demux has 4 output channels and to control 4 channel it needs 2 control signals.
When to use the enable bit in demultiplexer?
When the control signal is “0”, the first output channel is selected. When the control signal is “1”, the second output channel is selected as a route for input data. There is also an Enable bit used for enabling or disabling the circuit. It can be active high or active low.
What is the output expression of demultiplexer schematic?
According to the truth table given above, the output expression is: Schematic of 1 to 2 Demultiplexer using logic gates is given below. Demultiplexer needs And gates equal to the number of output channels and NOT gates equal to the number of Control signals.
What are the different types of demultiplexer ICS?
These are available in different IC packages and some of the most commonly used demultiplexer ICs includes 74139 (dual 1:4 DEMUX), 74138 (1:8 DEMUX), 74237 (1:8 DEMUX with Address Latches), 74154 (1:16 DEMUX), 74159 (1:16 DEMUX open collector type), etc. NOTE: The Demultiplexer ICs are also called as Decoder ICs.