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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The school had given us tons of IC chips that we never used. Most of witch were odd brands that are out of business now datashete they probably got dm74s151n next to nothing. I managed to identify about half of them and find data sheets and the other half nothing. Lots of the chips I cant ID don’t have manufacturers and just half half washed off datasheeet printed sloppy and crocked across them but a few are from big name manufacturers.
You would think that they would keep data sheets available for them even if they are no longer in production. I have little knowledge of the Motorola variety preferred the Commodore enhanced version but I believe they were used extensively in bygone days in small micro-computers before PCs became popular http: On Sep 5,at 6: My school didn’t give us a pre-stocked junkbox.
A lot of that stuff gets donated and slowly sits around becoming obsolete until the department moves and decides to throw it out. OTOH, give them to students, and datashret lot will get thrown into the trash when then move out at the end of the year Thanks for all the speedy responses. As far as the school giving us a junk box of parts I am sure I paid at least twice what I could of put it together myself for. Went to a private tech college and paid obscene amounts of money as a penance for screwing off to much in HS and not being able to get into a regular University.
There only admittance test was a 12 min timed IQ test if I recall right. The way it was set up was I got an associate degree first then reapplied for the BS it wasn’t something you could sign up for right from the start.
The associate degree wasn’t even accredited the BS was though that’s why I went on for the BS at the same school after the associate degree. Dave, On Mon, 5 Sep The clue is in the number – the “64” part is the bit-count in k, so it’s 8k x 8. I think is 70nS cycle time. Cheers, Howard Winter St.
On Tue, 06 Sep Pay no attention to the man behind the curtain! Send them to me I will recycle them in an environmentally-friendly manner! Dm74,s151n I remember rightly I had to make to with 2k x 1 I think memory chips, of which I would have needed 32 to give the same amount of storage as one of the above!
My place is about 19 millionth on the right. Hard dm74ls11n imagine how small memory was back then.
54LS/DM54LS/DM74LS Data Selector/Multiplexer
I built a PE Drum Synth in the late 70s that used, gasp, two s for storing patterns. Although after seeing you in a kilt, maybe it’s not a stick I should be ready to duck. Stuck eight of thoses ‘s on my Kim in order to get some real computting power. Bill Original Message From: Tuesday, September 06, 4: Send them to me I.
Dm74ld151n discussion dm744ls151n – Public. On Sep 6,at 4: I had one of those. But that doesn’t stop my “good chip to keep” detector from going off. You may as well list the rest of the part numbers you have. You or another list member just might be able to use some of them ddatasheet something useful once you know what they are.
Better than just chucking them out. This message neither grants consent to receive unsolicited commercial email nor is intended to solicit commercial email. Yea; I’m not home right now 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. When I get home tonight I will list the rest Justin. OK per request here are the rest.
I doubt anything too useful will show up in these. Datasheeh mostly logic gates. I can defiantly come up with some use for datasheer if anyone can ID them I like having a large surplus of components Its just It seemed pointless to keep them around not knowing what they were. 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.
When I was searching for dm4ls151n I really depended on finding a dm74l1s51n literal match as I really don’t know the logic behind the numbering. Justin, anything with 74 in it will be 74 duh series TTL or series.
It’s Allegro anyway You shouldn’t have too much trouble finding datasheets for these. Best regards, Spehro Pefhany –“it’s the network On 6 Sep at 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. Can definitely come up with some use for some of this stuff, expecially the drivers.
Lord knows why the school gave us some of this stuff though or where they dtasheet there dm74ld151n from. I don’t know how to program PLDs but I don’t think the school even had the means to do it.
Everything else was analog or computer related in the associate degree. Then in the bachelors degree it was all communications stuff from telcom to satellite and network protocols. 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.
Other than my laser microphone I made for my capstone project I never really made anything worthwhile that wasn’t just simply following a lab manual. So now I figure I want to get some projects and practical experience under my belt before I move on for a Masters and yet more calculus and theory.
I am somewhat of a computer programmer so Microcontrollers seemed the logical place and datasheeet one reason or another PICmicro was always the one I knew about even though I never used them before.
I am really friken tired of Laplace transforms, lol. I don’t think so. To fit into their part number system and those numbers it would be something like NJMJ, which doesn’t seem to be a valid part number. Blessed are the Greeks.
Jinx, On Datssheet, 07 Sep Ah yes, well spotted that man. I guess it has.
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Someone asked a little while ago about whether chips that old are still viable. They’re supposed to be hermetically sealed but I do wonder about ingress of moisture. I’d always believed that powering up old equipment once in datasheer while generates enough heat to dry the components out.
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. The dice themselves are hermetically sealed with a thin layer of glass on the top surface except on the bonding pads. Eventually the aluminum die bond wires could corrode away, but that’s not likely to happen very fast. I don’t think I recognize that appearance. Maybe it’s something else that is going on. 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 get a reliable solder joint.
Many of the chips made back then are not useful because there are much better faster, lower power, higher capacity, etc. On Wed, 7 Sepdigitaladdictions wrote: Dm74ls11n put together the pulse generator circuit in that datasheet.
The pulse output was working although the voltage level kept changing witch confused me. The sawtooth output didn’t produce any output. Now I put this together quickly on a breadboard with approximate value components so I didn’t expect much and if I dstasheet 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 In either case I would assume that this is indeed the function generator chip as suggested.