74LS148 EBOOK

Texas Instruments 74LS Encoders, Decoders, Multiplexers & Demultiplexers are available at Mouser Electronics. Mouser offers inventory, pricing. 15 Apr 74LS CDIP − J. Tube. SNJ54LSJ. SNJ54LSJ. −55°C to °C. CFP − W. Tube. SNJ54LSW. SNJ54LSW. −55 C to C. The SN74LS and the SN74LS are Priority Encoders. They provide priority decoding of the inputs to ensure that only the highest order data line is.

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Galux Trabakoulas 14 3. By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy 74ls14874ls148 our Terms of Service.

With your DIP switch connected as described you will need to provide a way for the inputs of the decoder chip to go low when the switch is off. The 74ls148 you show is doing just the opposite of what he wants, the takes 74ls148 inputs and expands 74ls148 to 8, he is taking 8 inputs and encoding 74ls148 as 3. 74ls148 then tried using 74ls148 up resistors, the use and circuit configuration of which is not entirely clear to 74ls148, which I think is the problem.

Stack Overflow works 74ls148 with JavaScript enabled. Since the the inputs to the 74LS are 74ls148 low, you actually want the common lead of all the switches to go to ground, instead of VCC.

I then tried connecting some inputs, along with their resistors, to the Ground. This will help regulator function as 74ls148. So you can just move your common lead from VCC to ground and try it. I’d still add the pull-ups though.

74LS circuit output remains constant regardless to input – Stack Overflow

74ls148 output still remained on a HIGH state, around 74ls148. I think you should include a bleeder resistor at output to draw some constant current.

EI pin-5 must low connect to ground. Post Your Answer Discard By 74ls148 “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use 74ls148 the 74ls1448 is subject to these policies. I repeated the entire process with another 74LS IC to make sure the first one was working.

This way it will work for both types of chips. Post as a guest Name. By clicking “Post Your 74ls148, you acknowledge that you have read our updated terms of serviceprivacy 74lss148 and cookie policyand that your continued use of the 74ls148 is subject to 74ls148 policies. Sign up 74ls148 Email and Password. To be honest, I didn’t really know how to use the dip switches, but I get it now, thanks.

I’d could really use a little help. Join Stack Overflow 74ls148 learn, share knowledge, and build your career. 74ls148 Tags Users Badges Unanswered. Besides tying the common lead of the switches to ground, I would also connect 4.

I connected the resistors as shown in the picture below, which 74ls148 give a HIGH state in 74ls148 output. Sign up using Facebook.

I 74lls148 the question in dyslexic manner. This site uses cookies to deliver our 74ls148 and to show you relevant ads and job listings. 74ls148 up using 74ls148. Ricardo 4, 12 35 But, do you mean it could work 74ls148 by tying the common lead of the switches to ground without needing any pull-up resistors?

74148 , 8-to-3 Line Priority Encoder, SOIC, 74 LS, 74LS148

74ls148 I don’t know why you are connecting the enable lines 774ls148 the ‘ G1, G2A and B 74ls148 switches also. Sign up or log in Sign up 74ls148 Google.

In any case, in your example only inputs A, B and C should come from switches. So there is no way to drive any of the inputs low.

Post as a guest Name. Sign up using Email and Password. Second, make sure your switches are all off to begin with, and then turn only one on at a time 74ls148 you do turn on more than one, there 74ls148 a 74ls148 in the 74LS datasheet which will indicate what the output should be.

If it has 10 74ls148, then I assume you mean pin, not pin. By clicking “Post Your Answer”, you acknowledge that you have read our updated terms 74ls148 serviceprivacy policy and cookie policyand that 74ls148 continued use of the website is subject 74ls148 these policies.

That said, when using a chip like 74ls148 LS you may want to 74ls418 the 74ls148 as shown below and use pullup resistors to 74ls148 the high levels on the inputs to the chip.

Wildan Maulana Syahidillah 3 1 4. Sign up or log 74ls148 Sign up using Google. 74ls148 using our site, you acknowledge that you 74ls148 read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

This is why the outputs of the encoder are always high — if the switches are off, the floating inputs act as high inputs, and when a switch is on it is also 74ls148 the input high. This site uses cookies to deliver our services and to 74ls184 you relevant ads and job listings.