Office Distributors for availability and specifications. Supply Voltage. 7V Order Number DM74LS00N This datasheet has been downloaded from: www. DM74LS00N from Texas Instruments High-Performance Analog. Find the PDF Datasheet, Specifications and Distributor Information. DM74LS00N . Fairchild reserves the right at any time without notice to change said circuitry and specifications. This datasheet has been downloaded from.
|Language:||English, Spanish, Dutch|
|ePub File Size:||20.74 MB|
|PDF File Size:||12.10 MB|
|Distribution:||Free* [*Sign up for free]|
DM74LS00N ON Semiconductor / Fairchild Logic Gates Qd 2-Input NAND Gate datasheet, inventory, & pricing. Datasheet. DM74LS00N Datasheet · PDF. Part, DM74LS00N. Category. Title, Bipolar->LS Family. Description, Quad 2-Input NAND Gate. Company, Fairchild Semiconductor. Datasheet, Download. DM74LS00N National Semiconductor datasheet pdf data sheet FREE Datasheets (data sheet) search for integrated circuits (ic), semiconductors and other.
You can contact me with your specific needs at my email address by referring to the Contact section of this web page. I also can burn many other sizes as well. Please email me with specific details and requirements. Contact Information You can email me at c o m p u t e r d o c at s c dot r r dot c o m for further information. Just remove the spaces and replace the words 'at' and 'dot' with the appropriate punctuation marks to arrive at a usable email address.
The following dropbox link has all the pictures I took of this baby a few years ago. If that happens, this portion will go there. In the way of restoration, not much has happened as of yet. I have been doing a lot of studying on the boards that are in my Altair to determine exactly what they are. This is what I have come up with so far according to the pictures and explanations on the S Computers' web page at S Computers. This web site has been a big help in this endeavor as they have pictures of many S boards along with explanations of what they are.
These are the boards I have so far as I can determine from what little experience I have with Altair microcomputers. Can they co-exist in an Altair with the Altair boards? A few small boards of unknown purpose that look like they are missing some power transistors of some type. Some of these boards have chips missing as well. What I don't have is any kind of online storage such as floppy drive controllers or hard drive controllers and drives which at the very least I must have in order to make use of the software I found.
Josh himself told me about his creation so I looked it up.
It is quite a board. It will have to be a slow build though. Here are the features that I remember reading about. It has 64KB of ram, 4 serial ports, 2 parallel ports, both Altair and IMSAI front panel connectors, an SD Card Interface for online storage, buffering to the S bus, and the ability to disable any function of the CPU board including the A CPU itself so it can co-exist with other boards in the computer as well as become a slave board instead of the master.
I can't wait for the current version to be release later on this month by Josh. In the meantime, I'm going to start examining the power supply first. I have a dilemma though. This Altair is so early in the production at MITS that the front panel is soldered to the backplane as is the wires from the power supply.
Even after I ensure nothing in the power supply is shorted out due to age, I still cannot do a smoke test until I know for sure that the voltages are in spec. I'm still thinking how I'm going to accomplish that. If anyone out there in Altair Land has restored an Altair that is willing to guide me through this restoration, please get in contact with me. At first I chose KiCAD for this purpose and although it is a very interesting program for this purpose, I did not like the fact that autorouting was not built in to the program.
After placing the parts on the PCB layout, the user has to go to an external web page to do the autorouting. After asking around on the Coco List and a longtime best friend, I have decided to change to Eagle and learn it instead.
I have been practicing entering schematics for a number of projects which I will eventually talk about here on this web page, but suffice it to say that I have gained a basic understanding of how Eagle works. I now understand why so many people on the Coco List and elsewhere on the internet are so keen on using this fine software package. At this point I'm using the free version of Eagle so all my projects will have to fit on a PCB about 4" x 4" in size.
All my projects will use through hole ICs to make it easier for people new to soldering to assemble the project kits. In the beginning the projects were very small and as I gained experience with Eagle, they grew in size. The first projects I played with were projects other people had created like: A Slot Extender for the Color Computer - I actually had this one made.
I plan to use this during all the testing of my Coco Slot compatible projects. I have started several projects for the Coco which will remain a mystery for now until they are completed. I have added a few minor modifications to the original design.
Then I created several variations of Grant's 6-chip computer. This was pretty simple for me as I had been reading a bunch of IC Datasheets by this time. Then I added 8KBs more of ram to the system to raise the total ram up to 48KB of contiguous memory for the Extended Basic Interpreter in this cool little project.
Just a little logic and it will be good to go. At this point I rested my brain for a little bit and thought about all I had done with my little computer.
After much searching and having found several versions of several solutions, I finally picked Marty H. Goodman's Color Monitor Driver design and decided to build it. When I was entering this design into Eagle, I remembered some other designs that I had downloaded off the internet for a Component Video Design, a design with a Color Composite output and a Monochrome driver output along with a sound output.
I decided to make a combined version that turned out quite well if I do say do myself. A mono sound circuit is also included. I sent the PCB design to be fabricated and when the three prototype PCBs have been completed and I have received them I will populate one of the boards soon and post a video of this board in action to YouTube and send a link to it to the Coco List. I will also include the link here. I'll keep you posted with continuing updates for this project. Why the Korean Coco 2B you ask.
Well I'm glad you asked that question. A while back a member of the Coco list mentioned that he was booting Extended Color Basic from cassette. He asked for an Eprom to be burnt with CB 1. I asked him would he like anything else added to his Coco. He asked me if I had any ideas. Well, actually I did have one, so I said yes. I emailed him the installation instructions thinking I had covered all the bases. Since I had gained so much help from others on the Coco List, I was excited to be able to finally help someone else.
In designing and typing up the instructions for the eprom installation, I had overlooked something. Some of you may have already figured this out. I had not considered the! When they disconnected the A14 line on pin 27 and installed the Eprom with all the pins inserted into the socket where the original Eprom had been, that did not work either. Well, I immediately started researching the cause of this dilemma and realized I had not included the! Plugging the Eprom straight into the socket didn't work either because the A14 signal on pin 27 of the was a!
PGM signal on the which was connected to 5V! The A14 address line pin 27 needs to be connected to ground to boot into Extended Color Basic 1. I think I have come up with a design that will do just that. I am waiting for the PCBs to arrive so I can test out my design. Thinking on the possibilities of such a setup, I would be able to use just a serial cable and connect up to a Drivewire 4 Server running on a PC without any external cartridges.
Why is this so cool? I'd be able to reduce the amount of hardware I would need if I ever needed to carry my Coco to a meeting. All I would need is the Coco 2B, the serial cable, the monitor and a laptop running Drivewire 4. No cartridges nor multipaks would be necessary! This would reduce the amount of needed equipment to carry to a color computer club meeting or a Coco convention should someone wish to demonstrate his latest version of a Coco game or most recent version of the latest and greatest NitrOS-9 utility.
Now That Is Cool! I'll keep you guys posted with continuing updates as they happen on this exciting project. I powered up the Coco 2B and I got Zip, Nada, Nothing! All I saw was the now all too familiar orange bands and green signs bands on the screen, so I knew the video circuitry was functional. I thought for a bit and decided to use the Color Basic 1. I figured since this code is proven functional, I can eliminate the possibility of an incorrectly programmed eprom from the mix of things happening or more appropriately not happening in the first test.
So I pulled both ICs out of the PCB and installed a jumper in the 14 pin socket to allow the chip select signal to pass through the 14 pin socket to the Eprom IC. This keeps the eprom out of the programming mode. Success has finally been achieved!
A basic test of the functionality of most of the PCB is complete. So, what have I accomplished so far? Yes the PCB does finally exist! It is beginning to look like a real Korean Coco 2B upgrade now.
Notice the single hook clip on the wire! This upgrade will not need any soldering to install so just about everyone will be able to install it. That is my goal anyway. Keep on believing! It Will become a reality. More news coming as it happens! I did a lot of research on pin SIMMs to make sure I understood them correctly for sometime before I created and finalized the design and had the board made. Boy was I mistaken on that one, but more on that in a minute. After submitting my design to OSHPark.
I went to my workbench in my shop and began to populate the PCB. This is what the board looks like. I had enough 0.
Well, guess what? It crashed quicker than the first one with 4 capacitors. I thought A-HA! I know what's going on. I immediately ordered 25 - uf electrolytic capacitors since I planned on make more Coco 3 compatible PCBs of various types.
Now I went back to my test Coco 3 and installed the first PCB back in again and tested it one more time. This time NitrOS-9 booted successfully and ran all night and into the next day. ASM file I had created over and over to make sure the Coco 3 was still functional.
It was all a fantastic success! I had made my first Coco 3 memory upgrade card and successfully tested it! I was ecstatic! Here is a closer view of the PCB. Well, you are probably wondering something. Where is that uf electrolytic capacitor? I don't see it on the KB Memory Upgrade you built. I will say you have a good eye! All these pictures were taken before the uf capacitor was soldered on the PCBs. I'll have to take those pictures after I make another PCB. In the meantime, I now have an Internationally known business!
I Love This Stuff! Take care my friends. StarFleet Out! End Transmission! To do that I took the Slot extender file for Eagle from the internet that's listed in several places and reorganized it so that it would fit inside an old game cartridge.
I showed the design to a friend of mine in Australia and he said that was pretty cool! Actually he generously gave me the idea to repackage it inside a game cartridge to make it easy to prototype with, so I did. Next I got to thinking that since the slot extender would possibly be the only PCB plugged into the Coco slot receptical, the user would not be able to get to his files.
My buddy in Australia gave me that idea too. I had been doing so many things designing this board and that board that I was having a difficult time coming up with ideas. I humbly that my buddy in Australia for all his help.
I love these purple PCBs with gold contacts and pads everywhere. They are real pretty and professional looking. After I was done, my buddy in Australia wanted a bare board to save on cost, so off to the US Post Office and mailed him one. My second international customer! I'm really liking all this! Here is a few pictures of the completed Coco Slot Extender with Eprom. I did continuity checks on the entire PCB and everything was correct.
I am happy to report that I had my second success testing another one of my creations on my test Coco 3. A true diskless Coco 3 with all the advantages of a total of floppy and Hard drives combined into whatever order the user wishes. I have an additional idea to include with this PCB my buddy gave me that I'm going to develop, so stay tuned.
Take care my friends and keep having fun with your Cocos! Starfleet Out! I'm at my favorite spot in a local Mickey D's updating this wiki page and I don't have my MicroSD to SD memory Card adapter with me, so I will have to add the pictures of the completed adapter after I get back home. The adapter brings out all 40 contacts of the Coco's cartridge slot receptacle so it is compatible with All three Color computers, the Coco 1, 2 and 3. It enables the designer to interface any type of circuit the user wises to any of the Cocos utilizing any needed signals available on the Coco's expansion slot.
This first version has NO BUFFERS included in the design so the user is responsible for ensuring that their circuit is compatible with the Coco prior to connecting the prototype circuit up to the Coco with this adapter.
I will be including the pin out of the Coco's Slot with each adapter that is ordered. Hey, wait a minute. This is the top view of my Coco Hardware Development Adapter fully assembled. This is the bottom view of the Coco Hardware Development Adapter. I will be putting together a little demo of the adapter in use as soon as I get a chance to come up with the design of the demo circuit and get the needed buffer ICs ordered.
Basically it will be a blinkenlights type of circuit showing all of the Coco's signals on a bunch of several different colored LEDs. I've got to either order a few more solderless breadboards or clear off a few I currently have in use. Until next time, Starfleet Out! This 33 byte program has gotten reduced down to 25 bytes.
The schematic and PCB lay out is now in the hands of two Electronic Engineer friends of mine for approval. Once this schematic is approved I will have made 3 prototype PCBs for testing. That is quite a title! It may be just a bit wordy but it does embody the entire experience in one statement. Well, let's turn the way back machine back a few months before the end of Test builders were requested back in October of if i remember correctly.
When I was accepted, I was ecstatic! I have always wanted to build a based computer with a card cage style chassis! Well, to make a long story shorter, after receiving the bare PCB I started studying as much as I could about how N8VEM builds their PCBs and studied what little was available at that point in time about the new 6x0x board project as it was called at that point in the process.
During my studies gathering all the information I needed to order all the parts I would need to put this single board computer together I fell ill with pneumonia. I am now doing a lot better and my lungs are clear once again, so I was able to continue.
I finally ended up receiving all the electronic parts I had ordered through out this period of time which ended up coming from a number of different places. As I studied and had the funds to order parts, I would order them in smaller batches as I was able. This I have come realize nickel and dimed me big time. I have learned a lot about how to correctly order bunches of parts. Unfortunately they are not all available from one electronics parts distributors.
I soldered machined strips for all the sockets and as well as all the resistors and capacitors. This is the front view of the PCB with the machined strips, resistors and capacitors all soldered into place. This is the back of the PCB thus far.
Parts are continually arriving and as soon as possible I solder them onto my PCB. Now that most of the parts have arrived I have got the PCB looking like this. Almost all the electronic parts are soldered into place. At this point I have made 1, solder joints!!! No wonder I had to take some breaks and rest my hands! This is the back of the PCB with almost all the electronics parts soldered into place.
It's really starting to come together. It is now March 7, and it's almost 3 O'Clock am and I'm in the middle of writing this portion of my Wiki page and the last of the parts have come in. I have placed the parts on the PCB, but due to inclement weather I have not been able to solder them into place yet. As I am still recovering from my previously mentioned illness, I want to stay well and not fall back into that yuck again. Here is the current picture with all the parts that need soldering either placed and soldered or just placed awaiting to be soldered.
This is a really nice looking PCB! By this time I have smoke tested this PCB at least twice. The first time after I got the floppy power connector soldering in place. The smoke test was successful - No smoke! If you let the smoke out, it won't work! The last time was after I got the green LEDs soldered in place. Now I can begin to describe to you what all the major parts are on this PCB. The ATX connector still needs to be soldered.
To the left of the ATX connector is a 5V to 3. Everything else on the board is soldered in place. Once the Voltage regulator is soldered and the power pins on the Parallax Propeller chip are double checked for correctness, I will begin the long process of inserting all the integrated circuits. Dm74ls00 datasheetpdf 2 page fairchild semiconductor. Dm74ls00 datasheet, dm74ls00 circuit, dm74ls00 data sheet. Dm74ls00 quad 2input nand gates general description this device contains four independent gates each of which performs the logic nand function.
Specify by appending the suffix letter x to the ordering code. Scribd is dn74ls00 worlds largest social reading and publishing site. Revised march dm74ls00 quad 2input nand gate general description this device contains four independent gates each of.
If you are getting any beeping you more than likely have hardware issues or repeated overheating may havealready caused damage. The recommended operating conditions table will define the conditionsfor actual device operation. Recommended operating conditions datasheet search, datasheets, datasheet search site for electronic components and. Dm74ls00, 54ls00, dm54ls00 dtasheet national semiconductor.
Dm74ls00 datasheet, dm74ls00 pdf, dm74ls00 data sheet, dm74ls00 manual, dm74ls00 pdf, dm74ls00, datenblatt, electronics dm74ls00, alldatasheet, free, datasheet. Intel fpgas and programmable devices documentation data sheets.
Dm74ls32n fairchild semiconductor, dm74ls32n datasheet. National semiconductor datasheet pdf catalog first page. National semiconductor catalog first page, datasheet, datasheey search, data sheet, datasheets, datasheet search site for electronic components and semiconductors, integrated circuits, diodes, triacs, semiconductors.
Dm74ls00 quad 2input nand gates general description this dagasheet contains four independent gates each of which. Dm74ls datasheet pdf, dm74ls data sheet, dm74ls, dm74ls. Order number dm74ls00m dm74ls00sj dm74ls00n package number m14a. The absolute maximum ratings are those values beyond which the safety of the device cannot be guaranteed.
Ic gate or quad 2 input 14dip online from elcodis, view and download dm74ls32n pdf datasheet, logic gates and inverters specifications.