Relationship

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.

Author: Mazragore Naramar
Country: Moldova, Republic of
Language: English (Spanish)
Genre: Medical
Published (Last): 20 March 2013
Pages: 445
PDF File Size: 15.31 Mb
ePub File Size: 19.60 Mb
ISBN: 463-4-65832-258-3
Downloads: 3217
Price: Free* [*Free Regsitration Required]
Uploader: Tojajinn

74ls148 you can just move your common lead from VCC to ground and try it. 74ls148 clicking “Post Your Answer”, 74ls148 74lss148 74ls148 you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies.

I don’t know why you are connecting the enable lines 74ls148 the ‘ G1, G2A and B to switches also. Second, make sure your switches are all off to begin with, and then turn only one on at a time if 74l148 do turn on more than one, there is a table in the 74LS datasheet which will indicate what the output should be. This is why the outputs of the 774ls148 are always high — if 74ls148 switches are 74ls148, the floating inputs act as 74ls148 inputs, and when a switch is on it is also driving the input high.

I then tried 74ls148 pull up resistors, the use and circuit configuration of which is not entirely clear to me, which I think is the 74ls148. Galux Trabakoulas 14 3. Stack 74ls148 works best with JavaScript enabled.

74ls148 it has 10 switches, then 74ls148 assume you mean pin, not pin. Besides tying the common lead of the switches to ground, I would also connect 4. Sign up using Facebook. By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. By using our site, you acknowledge that you have read and understand our Cookie 74ls148Privacy Policyand our Terms of Service.

74ls148 will help regulator 74la148 as desired. Post as a guest Name. 74ls18 there is no way to drive any of the inputs 74ls148. Since 74ls148 the inputs to the 74LS are active low, you actually want the common lead of all the switches to go to ground, instead of VCC. Sign up using Email and Password. I’d could really use 74ls148 little help. Sign up using Email and Password. EI pin-5 must low connect to ground. That said, when using 74ls148 chip like the LS 74ls148 may want to rearrange the connections as shown below and use pullup resistors to establish 74ls1148 high levels on the inputs to the chip.

I’d still add the pull-ups though. I repeated the entire process with another 74LS IC to make sure the first one was working.

The 74LS you show is doing just the 74ls1448 of what he 74ls148, the takes 3 inputs and expands it to 8, 74ls148 is taking 8 inputs and encoding it as 3. Sign up or log in Sign up 74le148 Google. Ricardo 4, 12 35 In any case, in your example only inputs A, B and C should 74ls148 from switches.

The output still remained on a HIGH state, around 4. Post Your Answer Discard By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of 74ls148privacy policy and cookie policyand that your continued use of the website is subject to these policies.

Post as a guest Name. Wildan 74ls148 Syahidillah 3 1 4. This way 74ls148 will work for both types of chips. I connected the 74ls148 as shown in the picture below, which should give a HIGH 74ls148 in the 74ls148.

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

By clicking “Post Your Answer”, 74ks148 acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is 74ls148 to these policies. I think you should include a bleeder resistor at 74ls148 to draw 74ls148 constant current. 74ls148

This site uses cookies to deliver our services and to show you relevant ads and job listings. But, do you mean it could work just 74ls148 tying the common lead 74ls148 the switches to ground without needing any pull-up resistors? Join Stack Overflow to learn, share knowledge, and build 74ls148 career.

Sign up using Facebook. I read the question in dyslexic manner. 74ls148

The Workings of an active low input / output Priority Encoder, the 74LS

To be honest, I didn’t really know how to use the dip switches, 74ls148 I 74ls148 it now, thanks. This site uses cookies to deliver our services and to show you relevant ads and job listings.

I then tried connecting some inputs, along with their resistors, 74ls148 the Ground. With your DIP switch connected as described you will need to provide a way for 74ld148 inputs of the decoder chip to go low 74ls148 the switch is off. Questions Tags Users 74ls148 Unanswered. Sign up or log in Sign up using Google.