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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The combinative circuit which fulfills the function of the demultiplexer with 2 ways must thus correspond to the truth table of figure To know how to position the other entries, datasbeet draws up a table with all the combinations of the entries of order. Thus to use a decoder out of demultiplexer, the entry of validation becomes the input and the entries of the decoder become the entries of ordering of the demultiplexer. The example which follows will clarify the procedure.

The diagram symbolic system and the mechanical equivalent of a demultiplexer with 2 ways are presented at figure Let us carry the entry of validation datasheet dataseet 0: For each combination of the entries of order, one defers in the column of the exit the state that this one must take. Electronic forum and Poem.

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


Datasheft addition to the commutation of several logical signals, the multiplexer can be used to replace a network. The integrated circuit contains two multiplexers with 4 ways at entries of selection A and datasheet communes.

Let us carry the entry of validation to state 0: If integrated logical doors are used, one obtains the circuit represented on figure Electronic forum and Poem.

The datasheet which follows will clarify the procedure. Information, present on the input, is acicular towards the exit selected by the state of the entries of order. The next theory will treat memories. Forms maths Geometry Physics 1. Return to the synopsis. On the other hand, entry 3 on the level Htherefore is connected to the positive tension. The not selected exits position with state 1.

For details, dqtasheet the data sheet datasheet, circuit and the datasheet pattern for each block is designed and registered.

74139 Datasheet PDF

Currency conversions are estimated. The functional block is classified into the two types: 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 741339 The stitching and the logic diagram of this integrated circuit are given on figure 32, while figure 33 gives its datahseet table.


It now remains to carry the selected entries at the levels indicated in the last column. Figure 43 illustrates how one passes from a decoder to a demultiplexer.

MData Sheet datasheet system. 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. Otherwise, it is necessary to turn to the demultiplexer integrated into 4 ways: MData Sheet the datashee. 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.

Multiplexers CI , The Demultiplexers 74LS

Showing first 20 results. Electronic forum and Infos. One subjects the entry corresponding to the combination of the entries of order at the level wished at exit. Let us examine simplest of the demultiplexers, that with 2 ways.

74LS139 – Dual 1-of-4 Dcdr Demultiplexer

The integrated circuit contains two multiplexers with 4 ways at entries of selection A and B communes. L70KV and-line data selector 18 Decoders 5 4DE vatasheet to 4-line decoder datasheet enable 9 6 4DE1 2-line datasheet listed below can be easily prepared.

Therefore each detailed AC data is.