Texas Instruments SN74LS08N: available from 42 distributors. Explore Integrated Circuits (ICs) on Octopart: the fastest source for datasheets, pricing. (RoHS). CU NIPDAU. N / A for Pkg Type. SN74LS08N. ACTIVE. PDIP. N. Pb-Free. (RoHS). CU NIPDAU. N / A for Pkg Type. SN74LS08N3. OBSOLETE. Copy SN74LS08N. Description, IC GATE AND 4CH 2-INP 14DIP. Copy IC GATE AND 4CH 2-INP 14DIP. Manufacturer Standard Lead Time, 6 Weeks. Detailed.

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Once you have a nicely quiescent, sn74ls08n datasheet up chip that doesn’t try to immolate itself you can start adding logic sn74ls08n datasheet and looking at the outputs.

I hope this quality is good enough. CrossRoads on Dec 29, Sign up or log in Sign up using Google. The 74LS08 circuit issue must sn74ls08n datasheet a wiring one. Check with a DVM to make sure you dxtasheet things hooked up correctly and that the voltage is correct.

This site uses cookies to deliver our services and to show you relevant ads and job listings. CMOS is dataasheet and you can drive loads either way.

Thanks for the advice. I’m not using any of the AND gates.

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Unconnected inputs are not sn74ls08n datasheet news for CMOS logic though, can cause oscillations and higher power consumption. All logic datahseet need decoupling as a matter of sn74ls08n datasheet, right next to each chip. Power it with 5V. Post as a guest Name. I am not using any resistors. Start creating good wiring habits.


I’ve got some logic gates from Texas Instruments and would like sn74ls08n datasheet understand why the left circuit doesn’t work while the right one works well and. Now with Unlimited Eagle board sizes!

This is the recommended operating current that can be sn74ls08n datasheet. A complete newbie question here: Note that I OL is 8mA, which is the recommended sink current.

Glad things are working now. Make sure you are identifying pin 1 correctly and counting the pins in the correct direction. I apparently was trying to use the IC upside-down, sending power to ground, and sn74ls08n datasheet to power.

The key to troubleshooting these kind of problems is to break them down to their essentials and add stages sn74ls08n datasheet after what sn74ls08n datasheet start with is working properly. Sign up using Facebook. Make sure power’s on pin 14 and ground is on pin 7.

SN74LS08N Datasheet(PDF) – Texas Instruments

MarkT Brattain Sn74ls08n datasheet Posts: Sn74ls08h datasheet says that it requires a minimum of 4. Disconnect everything but power and ground. Sign up using Email and Password. The chip should not heat up. See my previous post for output sn74ls08j currents and suggestion. The 74LS05 circuit cannot work as that’s an open-collector chip – the outputs can only sink current, not source it. I meant you could make sn74ls08n datasheet of the breadboard bus marked with a blue line.

Look for I OH. Once you see the outputs from the AND gates acting like they should, hook them up to the next stage. Questions Tags Users Badges Unanswered. Apologies if Sn74ls08n datasheet am missing something obvious, I am a first year EE student.


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 sn7ls08n these sn74ls08n datasheet.

You are lacking decoupling caps on your chips BTW – don’t get into that bad habit, nF ceramic sn74ls08n datasheet each chip is a good starting point. Here are the datasheets: That sn74ls08n datasheet tend to let the magic smoke out Read times previous topic – next topic. Yes, apparently you did next time I’ll zoom out a bit more when looking at a picture.

Terminate to High or Low as needed. Sn74ls08n datasheet us a good image of your wiring. I am only powering the IC. The last thing you did is where you should start looking. You would fare better to use modern CMOS families like 74HC, so 74HC08 and gates, 74HC14 not gates everyone uses the sn74ls08n datasheet because it has schmitt-trigger inputs which are very sn74ls08n datasheet for signal conditioning.

BobT 4 7. Make sure that the inputs are within data sheet spec DVM again, at least for the DC levels- scope is better. Not the wire colour LarryD on Dec 29, If it does, try a different chip- the original one may have been fried.