DM74LSN datasheet, DM74LSN circuit, DM74LSN data sheet: NSC – Data Selector/Multiplexer,alldatasheet, datasheet, Datasheet search site for. DM74LSN 1-of-8 Line Data Selector/multiplexer. This data selector/ multiplexer contains full on-chip decoding to select the desired data source. M16D. Lead Small Outline Package (SOP), EIAJ TYPE II, mm Wide. DM74LSN. N16E. Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-

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When I was searching for myself I really depended on finding a quite literal match as I really don’t know the logic behind the numbering. Tuesday, September 06, 4: The core electronics in the bs consisted of all analog circuit design and analysis with mostly discrete components occasionally op amps and tons of calculus to accomplish what we previously did with simple algebra.

Someone asked a little while ago about whether chips that old are still viable. It’s Allegro anyway You shouldn’t have too much trouble finding datasheets for these.

You would think that they would keep data sheets available dm74ls151m them even if they are no longer in production. I managed to identify about half of them and find data sheets and the other half nothing. The sawtooth output didn’t produce any output.

Pay no attention to the man behind the curtain! Although after seeing you in a kilt, maybe it’s not a stick I should be ready to duck. I don’t think I recognize that appearance. Justin, anything with 74 in it will be 74 duh series TTL or series.

My place is about 19 millionth on the right. Microcontroller discussion list – Public. Stuck eight of thoses ‘s on my Kim in order to get some real computting power.

DM74LSN Datasheet, DM74LSN PDF – Free Datasheets

You may as well list the rest of the part numbers you have. Probably mostly logic gates. Cheers, Howard Winter St. I have little knowledge of the Motorola variety dm47ls151n the Commodore enhanced version but I believe they were used extensively in bygone days in small micro-computers before PCs became popular http: Send them to me I will recycle them in an environmentally-friendly manner! If I remember rightly I had to make to with 2k x 1 I think memory chips, of which I would have needed d74ls151n to give the same amount of storage as one of the above!

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Anyway, I don’t think there’s any reason to expect a chip made in ’77 is going to be unreliable in ’05 unless and this is a big ‘unless’ the leads are in such condition that you can’t ddatasheet a reliable solder dn74ls151n.

OK per request here are the rest. On Sep 6,at 4: When I get home tonight I will list the rest Justin. I don’t know how to program PLDs but I don’t think datasheett school even had the means to do it. I don’t think so. Hard to imagine how small memory was back then. A lot of that stuff gets donated and slowly sits around becoming obsolete until the department moves and decides to throw it out.

Yea; I’m not home right dm74la151n but I was thinking the same thing quite frankly after having little luck with google I didn’t expect for as many responses so quick. Better than just chucking them out.

Ah yes, well spotted that man. On Wed, 7 Sepdigitaladdictions wrote: There only admittance test was a 12 min timed IQ test if I recall right.

National Semiconductor

The pulse output was working although the voltage level kept changing witch confused me. Also I’ve seen discolouration on pins where they enter the IC body and I wonder if this is some sort of material migration or break- down at the seal. Lots of the chips I cant ID don’t have manufacturers and just half half washed off numbers printed sloppy and crocked across them but a few are from big name manufacturers. In either case I would assume that this is indeed the function generator chip as suggested.


Everything else was analog or computer related in the associate degree. OTOH, give them to students, and a lot will get thrown into the trash when then move out at the end of the year Then in the bachelors degree it was all communications stuff from telcom to satellite and network protocols.

The school had given us tons of IC chips that we never used. Normally I am very good at finding stuff with google and I did find about half of the chips I had but these mostly just came up in long lists of components without any explanation if at all.

DM74LSN Datasheet – Data Selector/Multiplexer from National Semiconductor

They’re supposed to be hermetically sealed but I do wonder about ingress of moisture. Lord knows why the school gave us some datashewt this stuff though dm74ls1551n where they got there daatsheet from. If any of these are particularly static sensitive they probably are keeshed after 4 years of floating around in a tackle box in the trunk of a car and dozens of hands digging through them looking for specific parts in labs. Maybe it’s something else that is going on.

Now I put this together quickly on a breadboard with approximate value components so I didn’t expect much and if I had any sawtooth output I would of considered it a success. As it stands now it could just be a mater of putting it together with more exact values and keeping the leads short ect I am really friken tired of Laplace transforms, lol. I think is 70nS cycle time. The dice themselves are hermetically sealed with a thin layer of glass on the top surface except on the bonding dztasheet.