Contents
Which is the best description of a multiplexer?
The Multiplexer. Multiplexing is the generic term used to describe the operation of sending one or more analogue or digital signals over a common transmission line at different times or speeds and as such, the device we use to do just that is called a Multiplexer.
How does a demultiplexer work with a multiplexer?
When used with a demultiplexer, parallel data can be transmitted in serial form via a single data link such as a fibre-optic cable or telephone line and converted back into parallel data once again. The advantage is that only one serial data line is required instead of multiple parallel data lines.
Can a multiplexer have both positive and negative logic output?
Some multiplexer IC´s have a single inverting buffer (NOT Gate) connected to the output to give a positive logic output (logic “1”, HIGH) on one terminal and a complimentary negative logic output (logic “0”, LOW) on another different terminal.
Which is input does a multiplexer circuit control?
The input A of this simple 2-1 line multiplexer circuit constructed from standard NAND gates acts to control which input ( I 0 or I 1 ) gets passed to the output at Q.
What kind of multiplexer do I need for 32 registers?
Consider a register file with 32 registers where we only want to select a single register at any given time. Such multiplexer can be design from four 8:1 Mux. Various multiplexers are available in discrete chips as well for both 7400 series and 4000 series . A common multiplexer is the 8:1 Mux which selects one of 8 bits of input.
When does a multiplexer go into high or low?
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. Tri-state multiplexers are MUXes that do not force a LOW when enable is 0 but instead go into a High-Z state.
How is a multiplexer similar to a controlled switch?
Like a multiplexer, it can be equated to a controlled switch. In electronics, a multiplexer (or mux) is a device that selects between several analog or digital input signals and forwards it to a single output line.