IC 74153 DATASHEET PDF

TL F –1. Order Number DMQB FMQB DMJ. DMW or DMN. See NS Package Number J16A N16E or W16A. Function Table. datasheet, pdf, data sheet, datasheet, data sheet, pdf, National Semiconductor, Dual 4-Line to 1-Line Data Selectors/Multiplexers. The LSTTL/MSI SN54/74LS is a very high speed Dual 4-Input. Multiplexer with common select inputs and individual enable inputs for each section.

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This one, carried to the state 1force the exit of the multiplexer corresponding to state 0 independently of the state of the other entries. For example, entry 2 must be carried on the level Ltherefore connected to the mass. The two groupings and D give us the following equation of S1: In this chapter, we will examine the demultiplexers which are circuits whose function is opposite among that of the multiplexers. The entries of ordering of the multiplexer become the entries of the network which one wants to carry out.

Form of the perso pages.

Dual 4-Input Multiplexer

In addition to the commutation of several logical signals, the datashest can be used to replace a network. The exit S with for the equation: One subjects the entry corresponding to the combination of the entries of order at the level wished at exit. We will see that the same function can be obtained with a single multiplexer at sixteen entries.

The stitching and the logic diagram of this circuit are given on figure 41, while figure 42 gives its truth table.

Datasheet, PDF – Alldatasheet

The stitching and the logic diagram of this integrated circuit are given on figure 32, while figure 33 gives its truth table. If integrated logical doors are used, one obtains the circuit represented on figure In the table of figure 35, the lines represented in red characters correspond if at least two of the entries of order are on the level H and for which the exit must thus be with the level H.

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High of page Datasheey page Following page.

This one indeed requires at least three integrated circuits: This is made possible because the equation of the exit of a multiplexer reveals all the possible combinations of the entries of order. The data present in D is acicular towards S0 or S1 depending on the state of the entry of order A. Figure 43 illustrates how one passes from a decoder to a demultiplexer.

National Semiconductor

The exit of the circuit is brought to the level H when at least two of the reversers are commutated on the positive tension. How to make a site?

Return to the synopsis. Moreover, the 74135 of a multiplexer makes it possible to pass easily from a switching function to another by changing the level of the inputs. Dynamic page of 47153. The combinative circuit which fulfills the function of the demultiplexer with 2 ways must thus correspond to the truth table of figure The diagram symbolic system and the mechanical equivalent of a demultiplexer with 2 ways are presented at figure The advantage of the multiplexer compared to the network of doors is obvious: It now remains to carry the selected entries at the levels indicated in the last column.

The integrated circuit 74LS contains two demultiplexers with 4 ways.

To know how to position the other entries, one draws up a table with all the combinations of the entries of order. To contact the author. The next theory will treat memories.

The circuit which results from it is deferred on figure According to what was known as before, the four switches are dahasheet to the four entries of order D, C, B, A of the multiplexer. For each combination, one indicates the logical level that must take the exit.

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A circuit of this kind can be used for the indication of breakdowns, or for the counting of parts on a production line.

(PDF) 74153 Datasheet download

Otherwise, it is necessary to turn to the demultiplexer integrated into 4 ways: One does not find a demultiplexer with 2 ways integrated.

Information, present datasjeet the input, is acicular towards the exit selected by the state of the entries of order. 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 Electronic forum and Poem.

Let us carry the entry of validation to state 0: On the other 71453, entry 3 on the level Htherefore is connected to the positive tension. We know that the majority of the decoders have their active exits at state 0 and their entry of active validation to state 0.

Click here for the following lesson or in the synopsis envisaged to this end. Now let us carry the entry of validation to state 1: One has four switches being able to be connected either to the supply voltage, or with the mass and one wants to know so at least two switches are closed again on the positive tension of food. To find the equation simplest of S1let us draw the picture of Karnaugh figure The not selected exits position with state 1.

Use of a decoder out of demultiplexer. For each combination of the entries of order, one defers in the column of the exit the state that this one must take.