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Datasheeet name is a key part of the Icecat product title 7hct640 a product data-sheet. The brand’s unique identifier for a product. Previous topic Next topic. So going off this example: I dug it out and had my co-worker take a 74hcf640 of its long-dead corpse.

We use cookies to ensure that we give you the best experience on our website. If you continue to use this site we will assume that you are happy with it. You can give it a lot more to make your address decoding hardware simpler and just not use more than four. The have these also, and I have only used them for other things.

I’m ready for another byte. Here’s what I get from page 10 of the http: What type of chip would be good for an FDC. Sorry, this information is not published yet!

More Sharing Services Share. Actually though, unless you know for sure that all the other bits in CRA are 0 and you want to keep them that way, it would be better to use an instruction or sequence of instructions that sets only that bit and leaves the rest unaffected. But the data-sheet is not yet standardized by an Icecat editor.

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Embed the product datasheet into your content. Thanks for looking that up for me, Garth.

74HCT Datasheet, PDF – Alldatasheet

Sat Aug 03, I remember that the little proto-board project that I did with the about 27 years ago! Usually application needs at least 5 hours for publishing information about new products. Offhand, I’d say you made the right choice! I found a datasheet at http: Page 2 of 2. Download the free Open Icecat data-sheets.

Cool — so you have d0 on one IC connected to d7 on the other, d1 to d6and so on? Category Does not fit in any category. Imagine that this responsive data-sheet is included in the product page of your webshop. It’s generally two to the power of however many register-select inputs there are. Since the PIA has two and I think the is the same thingthat makes for four addresses. Tue Dec 11, 8: Login or signup for Full Icecat to access all product specs. An alternative solution — besides a jumble of jumpers on top of jumpers — would be to redefine the pinout by turning the chip upside down, and then bending the pins around or soldering to some sort of adapter.

Multiple product codes can be mapped to one mother product data-sheet if the specifications are identical. That doesn’t mean you have to give it only four addresses. Speaking of vagaries of VIA usage, this computer my KimKlone has opcodes that talk to one of a VIA’s bit counters, rendering it part of the programming model.

74HC245PW Datasheet

Sacramento, CA, United States. Mon Dec 74hct40, 2: Moreover, I needed the counter to increment, not decrement– again, something you won’t find on the data sheet!


Google [Bot] and 0 guests. Tue Jan 15, 5: Add to compare Don’t compare Add to compare You can only compare products that are fully described in the Icecat standard format, and belong to the same category. The idea for use like on a parallel printer, where you write to the port for example, one line dtaasheet the printer, “I have new data for you,” and the printer takes it and uses the other line to say, “Thanks.

(PDF) 74HCT640 Datasheet download

Please, try again later. You won’t find that on a data sheet! Bit 0 ie, the bit whose value is 1, the number you put in your first line has to do with enabling interrupts caused by an active edge on CA1; so that’s not what you want right now.

Users browsing this forum: I like how you fixed it in software! If you do give it more, the four you need will get reflected in other addresses; but if you don’t use them, it does not cause any problems.

A manufacturer can have multiple brand names. So, I used an inverting bus tranceiver 74HCT to connect it to the rest of the system. The general trademark of a manufacturer by which the consumer knows its products. You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot post attachments in this forum.