IC 74153 DATASHEET PDF

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Kigakora The stitching and the logic diagram of this integrated circuit are given on figure 32, while figure 33 gives its truth table. Dynamic page of welcome. To know how to position the other entries, one draws up a table with all the combinations of the entries of order.

One realizes that it is necessary to employ several types of doors, of the doors OR with 3 entriesa door OR at 2 entries and a door AND 4 entries. The exit S with for the equation: In short, the logical data present on the entry of validation is acicular towards the exit selected by the entries of the decoder.

The two groupings and D give us the following equation of S1: According to what was known as before, the four switches are connected to the four entries of order D, C, B, A of the multiplexer.

Form of the perso pages. National Semiconductor It is noticed that the binary number formed by the state of the entries of selection B and A gives the datashete index of the exit concerned. This one indeed requires at least three integrated circuits: We will see that the same function can be obtained with a single multiplexer at sixteen entries.

The diagram symbolic system and the mechanical equivalent of a demultiplexer with 2 ways are presented at figure Thus to use a decoder out of demultiplexer, the entry of validation becomes the daasheet and the entries of the decoder become the entries of ordering of the demultiplexer.

High of page Preceding page Following page. For example, entry 2 must be carried on the level Ltherefore connected to the mass.

For each combination of the entries of order, one defers in the column of the exit the state that this one must take. The combinative circuit which fulfills the function of the demultiplexer with 2 ways must thus correspond to the truth table of figure Click here for the following lesson or in the darasheet envisaged to this end.

If integrated logical doors are used, one obtains the circuit represented on figure The not selected exits position with state 1.

The advantage of the multiplexer compared to the network of doors is obvious: This one, carried to the state 1force the exit of the multiplexer corresponding to state 0 independently of the state of the other entries. Return to the synopsis. Electronic forum and Poem. To determine how to connect the sixteen inputs, it is enough to follow the described procedure and to build a table with sixteen lines like that of figure How to make a site?

This is made possible because the equation of the exit of a multiplexer reveals all the possible combinations of the entries of order. The example which follows will clarify the Let us examine simplest of the demultiplexers, that with 2 ways. Use of a decoder out dataheet demultiplexer. If one has the integrated circuitone can carry out the circuit of figure It now remains to carry the selected entries at the levels indicated in the last column.

In this chapter, we will examine the demultiplexers which are circuits whose function is opposite among that of the multiplexers.

Let us carry the entry of validation to state 0: Forms maths Geometry Physics 1. We know that the majority of the decoders have their active exits at state 0 and their entry of active validation to state 0. The exit of the circuit is brought to the level H when at least two of datashset reversers are commutated on the positive tension. The circuit which results from it is datxsheet on figure To contact the author. The entries of ordering of the multiplexer become the entries of the network which one wants to carry out.

Static page of welcome. The expressions and lead us to the logic diagram of figure Electronic forum and Infos. Now let us carry the entry of validation to state 1: In addition to the commutation of several logical signals, the multiplexer can be used to replace a ix. Datasheet PDF — National Semiconductor TI Moreover, the use of a multiplexer makes it possible to pass easily from a switching function to another by changing the level of the inputs. One has four switches being able to be connected either to the ix voltage, or with the mass and one wants to know so at least two switches are closed again on the positive tension of food.

Otherwise, it is necessary to turn to the demultiplexer integrated into 4 ways: A circuit of this kind can be used for the indication of breakdowns, or for the counting of parts on a production line. On the other hand, entry 3 on the level Htherefore is connected to the positive tension.

One subjects the entry corresponding to the combination of the entries of order at the level wished at exit. Information, present on the input, is acicular towards the exit selected by the state of the entries of order. TOP Related.

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Ic 74153 Datasheet C3

Gara If one has the integrated circuitone can carry out the circuit of figure Dynamic page of welcome. Figure 43 illustrates how one passes from a dtasheet to a demultiplexer. We will see that the same function can be obtained with a single multiplexer at sixteen entries. Return to the synopsis. Let us carry the entry of validation to state 0: To find the equation simplest of S1 , let us draw the picture of Karnaugh figure One realizes that it is necessary to employ several types of doors, of the doors OR with 3 entriesa door OR at 2 entries and a door AND 4 entries.

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IC 74153 DATASHEET PDF

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