El CI decodificador/demultiplexor de 4 a 16 TTL 74LS tiene dos entradas de datos G1 y G2 que activan a una única entrada en el nivel. In electronics, a multiplexer (or mux) is a device that combines several analog or digital input .. , demux. Output is inverted input. , CD/ is a TTL circuit, and TTL was designed to make the best use of which explains the basic functionality of the working of a demultiplexor.

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Process software and digital networks. Single-core Multi-core Manycore Heterogeneous architecture. So they are inverted a explained in the theory. Demultipledor means that any function of the selection bits can be constructed by logically OR-ing the correct set of outputs.


The series has several ICs that contain multiplexer s:. Since digital logic uses binary values, powers of 2 are used 4, 8, 16 to maximally control a number of inputs for the given number of selector inputs. Other common sizes are 4-to-1, 8-to-1, and to Home Questions Tags Users Unanswered. Demultiplexers are sometimes convenient for designing general purpose logic, because if the demultiplexer’s input is always true, the demultiplexer acts as a decoder.

Post as a guest Name. In some cases, the far end system may have functionality greater than a simple demultiplexer; and while the demultiplexing still occurs technically, it may never be implemented discretely. Why are the outputs inverted?

Processor register Register file Memory buffer Program counter Stack.

The series has several ICs that contain demultiplexer s:. While this is mathematically correct, a direct physical implementation would be prone to race conditions that require additional gates to suppress. In other projects Wikimedia Commons. By using our site, you acknowledge demultiplxor you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. Multiplexers can also be used demultoplexor implement Boolean functions of multiple variables.

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Data dependency Structural Control False sharing. This is especially useful in situations when cost is a factor, for modularity, and for ease of modification.

One use for multiplexers is economizing connections over a single channel, by connecting the multiplexer’s de,ultiplexor output to the demultiplexer’s single input. I have a doubt in the demultiplexer section. This article is about electronics switching.

This all has to do with the actual ic design. The image to the right demonstrates this benefit. Email Required, but never shown. Multiplexers can also be used as programmable logic devicesspecifically to implement Boolean functions. For demltiplexor, 9 to 16 inputs would require no fewer than 4 selector pins and 17 to 32 inputs would require no fewer than 5 selector pins. The actual implementation of the chosen ic has active low outputs.

Larger Multiplexers can be constructed by using smaller multiplexers by chaining them together. Tomasulo algorithm Reservation station Re-order buffer Register renaming.

Demultiplexor by HENRY FARINANGO on Prezi

Often, a multiplexer and demultiplexer are combined together into a single piece of equipment, which is conveniently referred to as a “multiplexer”. Branch prediction Memory dependence prediction. They forward the data input to one of the outputs depending on the values of the selection inputs.

This carried through to the input current requirements: If you have some experience using BJTs you will know that NPN transistors are best used to pull a signal to 0V common emitter, with the output connected to the collector and quite weak at pulling a signal high. The variables are connected to the selector inputs, and the function result, 0 or 1, for each possible combination of selector inputs is connected to the corresponding data input. Common collector, with the signal connected 7415 the emitter, which remains at 0.


A multiplexer is often used with a complementary demultiplexer on the receiving end. This page was last edited demultiplexorr 12 Decemberat Retrieved from ” https: The two 4-to-1 multiplexer outputs are fed into the 2-to-1 with the selector pins on the 4-to-1’s put in parallel giving a total number of selector inputs to drmultiplexor, which is equivalent to an 8-to Sign up using Facebook.

Is the hardware implementation circuit different than the one explained in theory? The datasheet of these components is always the key to the correct implementation. From Wikipedia, the free encyclopedia. An electronic multiplexer can be considered as a multiple-input, single-output switch, and a demultiplexer as a single-input, multiple-output switch. Sign up or log in Sign up using Google. Any Boolean function of n variables and one result can be implemented with a multiplexer with n selector inputs.

Conversely, a demultiplexer or demux is a device taking a single input signal and selecting one of many data-output-lines, which is connected to the single input. Post Your Answer Discard By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies.

But when we try to implement a demultiplexer using a TTLthis is the truth table that is given in the book:.