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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74LS139 – Dual 1-of-4 Dcdr Demultiplexer

Black Mamba 2. So, I compared it to Demux’s Enable input. VIEWP datasheett nr 0. There is no select lines.

All operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts.

Thanks for simplifying the answer. The E enable line can be used as active low input. 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.

74LS Datasheet pdf – Decoder/Demultiplexer – Fairchild Semiconductor

The device has two independent decoders, each accepting two inputs and providing four mutually exclusive active LOW Outputs. Each decoder has an active LOW Enable input which can 74sl139 used as a data input for a 4-output demultiplexer.


Sign up using Facebook. Not more than one output should be shorted at a time, nor for more than 1 second.

Datasheet «74LS139»

Each half of the LS can be used as a function generator providing all four minterms of two variables. Thanks for the answer. So, I was confused. By using our site, you acknowledge that you have read and understand eatasheet Cookie PolicyPrivacy Policyand our Terms of Service.

Post Your Answer Discard 74l139 clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies. In the logic diagram of the 74LS, you have exactly that.

If yes then how can I give it input and select lines? What, exactly, do you think the function of pins 1 and 15 are? Home Questions Tags Users Unanswered. Your explanation resolved my confusion. The device has two independent decoders, each of which accept two binary weighted inputs AAi and provide four mutually exclusive active LOW outputs O0-O3. I just better understood the concept from you than from Tom’s answer. The outputs are active low, hence the outputs that are not addressed are high. Sign up or log in Sign up using Google.

SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and 74ls193 liability, including without limitation special, consequential or incidental damages.


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These four minterms are useful in some applications, replacing multiple gate functions as shown in Fig. Wouter van Ooijen Here is the link to take a look at datasheet. SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or 74ls13 life, or for any other application in which the failure of the SCILLC product could create a situation 47ls139 personal injury or death may occur.

Full text of ” IC Datasheet: