SN74LS08N .. Reproduction of TI information in TI data books or data sheets is permissible only if reproduction is without alteration and is accompanied. SN74LS08N datasheet, SN74LS08N pdf, SN74LS08N data sheet, datasheet, data sheet, pdf, Motorola, QUAD 2-INPUT AND GATE. SN74LS08N from Texas Instruments High-Performance Analog. Find the PDF Datasheet, Specifications and Distributor Information.
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Not the wire colour Thanks for the advice. That would tend to let the magic smoke out Unconnected inputs are not good news for CMOS logic though, can cause oscillations and higher power consumption.
The datasheet says that it requires a minimum of 4. Make sure that the inputs are within data sheet spec DVM again, at least for the DC levels- scope is better. The 74LS08 circuit issue must be a wiring one. The key to troubleshooting these kind of problems is to break them down to their essentials dayasheet add stages only after what you start with is working properly.
The last thing you did is where you should start looking. Note that I OL is 8mA, which is the recommended sink current. I am only powering the IC. Now with Unlimited Eagle board sizes!
Apologies if I am missing something obvious, I am a first year EE student. This is the recommended operating current that can be sourced. The 74LS05 circuit cannot work as that’s an open-collector chip – the outputs can only sink current, not source it. I hope this quality is good enough. Post Your Answer Discard By 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.
(PDF) SN74LS08N Datasheet download
If it does, try a different chip- the original one may have been fried. Sign up or log in Sign dataheet using Google.
All logic circuits need decoupling as a matter of course, right next to each chip. See my previous post for output driving currents and suggestion. Once you have a nicely quiescent, powered up chip that doesn’t try to immolate itself you can start adding logic inputs and looking at the outputs. By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. MarkT Brattain Member Posts: BobT 5 7.
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Show us a good image of your wiring. Disconnect everything but power and ground. CMOS is symmetrical and you can drive loads either way. I apparently was trying to use the IC upside-down, sending power to ground, and ground to power.
Terminate to High or Low as needed. Once you see the outputs from the AND gates acting like they should, hook them up to the next stage. Email Required, but never shown. You are lacking decoupling caps on your chips BTW – don’t get into that bad habit, nF ceramic for each chip is a good adtasheet point. CrossRoads on Dec 29, LarryD on Dec 29, I meant you could make use of the breadboard bus marked with a blue line. I’m not using any of the AND gates.
SN74LS08N Texas Instruments | Ciiva
Glad things are working now. Post as a guest Name. Yes, apparently you did next time I’ll zoom out a bit more when looking at a picture. By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and daasheet policyand that your continued use of the website is subject to these policies.