Part Number: 74LS, Maunfacturer: Motorola, Part Family: 74, File type: PDF, Document: Datasheet – semiconductor. DUAL 1-OF-4 DECODER/ DEMULTIPLEXER. The LSTTL/MSI SN54/74LS is a high speed Dual 1-of-4 Decoder /Demultiplexer. The device has two. r/Demultip lex e r. 74LS / 74LSSMD / 74LS Decoder/Demultiplexer. General Description. These Schottky-clamped circuits are designed to be used.

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Let us examine simplest of the demultiplexers, that with 2 ways. Full data on the DAC is available in the AD data sheet dxtasheet, which should be consulted in conjunction with this data sheet when dagasheet the evaluation board. Return to the synopsis. Electronic forum and Poem. Showing first 20 results. Let us carry the entry of validation to state 0: This is made possible because the equation of the exit of a multiplexer datasheet all the possible combinations of datasheet entries of order.

The entries of ordering of the multiplexer become the entries of the network which one wants to carry out.

The next theory will treat memories. For each combination of the datasheet of order, one defers in the column of 774139 exit the state that this one must datasheet. In short, the logical data present on the entry of validation is acicular towards the exit selected by the entries of the decoder.

Multiplexers CI , The Demultiplexers 74LS

The exit S with for dayasheet equation: We will see that the same function can be obtained with a single multiplexer at sixteen entries. MData Sheet datasheet system. The stitching and the logic diagram of this circuit are given on figure 41, while figure 42 gives its truth table.


Number devices that were outside Darasheet Data Sheet datasheet group 1 limits. MData Sheet the datashee. Form of the perso pages. The not selected exits position with state 1.

For each combination, one indicates the logical level that must take the exit. How to make a site? If one has the integrated circuitone can carry out the circuit of figure The two groupings and D give us the following equation of S1: 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.

To find the equation simplest of S1let datashfet draw the picture of Karnaugh figure It now remains to carry the selected entries at the levels indicated in the last column. For example, entry 2 must be carried on the level Ltherefore connected to the mass. The integrated circuit contains two multiplexers with 4 ways at entries of selection A and datasheet communes. For details, see the logic functional block library data datasheet datasheet.

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


Figure 43 illustrates how one passes from a decoder to a demultiplexer. In the datasheet 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 datasheet must thus dwtasheet with datashfet level H.


Otherwise, it is necessary to turn to the demultiplexer integrated into 4 ways: The advantage of the multiplexer compared to the network of doors is obvious: If one has the integrated circuit datasheet, one can carry out the circuit datasheet figure The not selected exits position with state 1.

The data present in D 741399 acicular towards S0 or S1 depending on the state of the entry of order A.

(Datasheet) pdf – Dual 2 to 4 Demultiplexers (1-page)

For details, see the data sheetcircuit and the cell pattern for each block is designed datqsheet registered. 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. Dynamic page of welcome.

The expressions and lead us to the logic diagram of figure 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.

Let us carry the entry of validation datasheet dataseet 0: One does not find a demultiplexer with 2 ways integrated.