Forms Of Multiplexers

A multiplexer is considered as a multiple-input, single-output switch, multiple signals to share one device or resource. Digital multiplexer is constructed from individual analogue switches encased in a single IC package.

Shenzhen, China (prHWY.com) March 25, 2013 - A multiplexer, sometimes known a multiplexor or simply a mux, is definitely an digital camera that selects from several input signals and transmits to 1 or even more output signals, can be viewed as like a multiple-input, single-output switch. A Phone Optical Multiplexer is definitely an illustration of a really large virtual multiplexer that is built from many smaller, discrete ones. An electronic multiplexer makes it possible for multiple signals to talk about one device or resource, for example, one A/D converter a treadmill communication line, instead of having one device per input signal.

Multiplexers connect or control, multiple input lines called "channels" consisting of either 2, 4, 8 or 16 individual inputs, one at a time to an output. A multiplexer is usually used with a complementary demultiplexer on the receiving end. A demultiplexer (or demux) is really a single-input, multiple-output switch. At the receiving end, a demux, chooses the correct destination from the many possible destinations by applying the same principle in reverse.

Generally, multiplexers are used as you method of reducing the number of logic gates needed in a circuit or when a single data line is necessary to carry several different digital signals. It selects one of many analog or digital input signals and forwards the chosen input into a single line. A multiplexer of 2n inputs has n select lines, which are used to decide which input line to send towards the output.

Multiplexers also are used in building digital semiconductors such as central processing units (CPUs) and graphics controllers. During these applications, the number of inputs generally is a multiple of two, the amount of outputs is either one or relatively small multiple of two, and also the number of control signals is related to the combined number of inputs and outputs.

Types of multiplexers are used in communications. In the simplest form, a multiplexer will have two signal inputs, one control input and something output. An example of an analog multiplexer may be the source control on a home stereo unit that allows the consumer to choose between the audio from a compact disk (CD) player, digital versatile disc (DVD) player and cable tv line.

There are several more complicated forms of multiplexers. Time-division multiplexers(or TDM), for example, have a similar input/output characteristics as other multiplexers, but instead of having control signals, they alternate between all possible inputs at precise periods of time. Alternatively, a digital TDM multiplexer may combine a limited quantity of constant bit rate digital data streams into one data stream of a better data rate, by forming data frames composed of one timeslot per channel. Time-division multiplexers generally are built as semiconductor devices, or chips, but they also can be built as optical devices for fiber optic applications.

PDH Multiplexer designs for highly integrated structure and offers 16 standard E1 interfaces together with one channel of order wire, with self-contained alarm and NM functions, as well as self-testing and E1 loop-back testing functions. While, digital multiplexer is constructed from individual analogue switches encased in a single IC package as opposed to the "mechanical" type selectors such as normal conventional switches and relays.

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Tag Words: phone optical multiplexer, digital multiplexer

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