Part Number: 74LS, Maunfacturer: Motorola, Part Family: 74, File type: PDF, Document: Datasheet – semiconductor. 74LS datasheet, 74LS pdf, 74LS data sheet, datasheet, data sheet, pdf, Fairchild Semiconductor, Decoder/Demultiplexer. “Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may.
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What, exactly, do you think the function of pins 1 and 15 are?
74LS139 – Dual 1-of-4 Dcdr Demultiplexer
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In the logic diagram of the 74LS, you have exactly that. After that I have taken a look at the datasheet of 1: Each decoder has an active LOW Enable input which can be used as a data input for a 4-output demultiplexer.
Each half of the LS can be used as a function generator providing all four minterms of two variables. Before taking a look at demux, I actually took a look at mux’s datasheet, where I saw an Enable input, to enable or disable mux. All operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. The device has two independent decoders, each accepting two inputs and providing four mutually exclusive active LOW Outputs.
74LS139 Datasheet PDF
Thanks for simplifying the answer. Sign up using Facebook. Wouter van Ooijen So I will accept it. Black Mamba 2.
The outputs are active low, hence the outputs that are not addressed are high. Email Required, datashdet never shown. Each half of the LS generates all four minterms of two variables. Sign up or log in Sign up using Google.
74ls datasheet datasheet & applicatoin notes – Datasheet Archive
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Not more than one output should be shorted at a time, nor for more than 1 second.
I just better understood the concept from you than from Tom’s answer. Here is the link to take a look at datasheet. If yes then how eatasheet I give it input and select lines?
Search the history of over billion web pages on the Internet. Post as a guest Name. So, I compared it to Demux’s Enable input. The 74ls19 has two independent decoders, each of which accept two binary weighted inputs AAi and provide four mutually exclusive active LOW outputs O0-O3.
In your first paragraph you say that a demux requires: Home Questions Tags Users Unanswered. The E enable line can be used as active low input. There is no select lines. Your explanation resolved my confusion. Thanks for the answer.