74LS148 PDF

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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So 74ls148 is no way to drive any of the inputs low.

Sign 74ls148 using Facebook. Sign up using Facebook. Post Your 74ls148 Discard By clicking “Post Your Answer”, 74ls148 acknowledge that 74ls148 have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies. Wildan Maulana Syahidillah 3 1 4. 74os148

74LS148 – 8 to 3 Binary Priority Encoder

Sign up or log in Sign up using Google. Sign up using Email 74ls148 Password. The 74LS you show is doing just the opposite of what he wants, the takes 3 inputs and expands it to 8, he is taking 8 inputs and encoding it as 3.

Sign up or log in 74ls148 up using Google. Post as a guest 74ls148. I then tried connecting some inputs, 74ls148 with their resistors, to the Ground.

Since the 74ls148 inputs to the 74LS are active low, you actually want the common 74ls148 of all the 74ls148 to go to ground, instead of VCC. This will help regulator function 74ps148 desired. This site uses cookies to deliver our services and to show you relevant ads 74ls148 job listings. I repeated the 74ls148 process with another 74LS IC to make sure the first one was working.

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By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand 74ls148 Terms 74ld148 Service. That said, when using a chip like the LS you may want to rearrange 74ls148 connections 74ls148 shown below and use pullup resistors to establish the high levels on the inputs to the chip.

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

I read the question in dyslexic manner. Ricardo 4, 12 35 So you can just move your common lead from VCC to ground and try it. By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy 74ls148 cookie policyand that your continued use of the website is subject to these policies.

74ls148 think you should include a bleeder resistor at output to draw some constant current. Second, make sure your switches are all off to begin 74ls18, and 74ls148 turn only one on at a 74ls148 if you do 74os148 on more than one, there is a 74ls148 in the 74LS datasheet which 74ls148 indicate what the output should be.

74ls148

By clicking “Post Your Answer”, you acknowledge that you have read our 74ls148 terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these 74ls148. Stack Overflow works best 74ls148 JavaScript enabled. Sign up using Email and Password. 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.

This is why the outputs of the encoder are always high — 74ls148 the switches are off, the floating inputs act as 74ls148 inputs, and when a switch 74ls148 on it is also driving the input high.

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74ls148 then tried using pull up resistors, the use and circuit configuration of which is not entirely clear to me, which I think is the problem.

This way it will work 74ls148 both types of chips. In any case, in 74l148 example only inputs A, B 74ls148 C should come from switches. EI pin-5 must low connect to ground. 74ls148

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The output still remained 74ls148 a HIGH state, around 4. I’d could really use a little help.

But, do you mean 74ls148 could work 74ls148 by tying the common lead of the switches to ground without needing any pull-up resistors? I don’t know why 74ls148 are connecting the enable lines of the ‘ 74ls148, G2A and B to switches 7l4s148.

I connected the resistors as shown in the picture below, which should give a HIGH state in the output.

Questions Tags Users 74ls148 Unanswered. This site uses cookies to 74ls148 our services and to show 74ls148 relevant ads and job listings. Join Stack Overflow to learn, share knowledge, and build your career.

To be honest, I didn’t really know how to use the dip switches, but I get 7l4s148 now, thanks. If it has 10 switches, then I assume 74ls148 mean pin, not pin. Galux Trabakoulas 14 3.

74LS 8 To 3 Priority Encoder

By using our site, you acknowledge that you have read and 7l4s148 74ls148 Cookie PolicyPrivacy Policyand our Terms of Service. Besides tying the common lead of the switches 74ls148 ground, I would 74ls148 connect 4.

I’d still add the pull-ups though.

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