74HCT640 DATASHEET PDF

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74HCT – Octal Bus Transceiver, 3 State, TTL Logic Level

I found a datasheet at http: You can give it a lot more to make your address decoding hardware simpler and just not use more than four. 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. The general trademark of a manufacturer by which the consumer knows its products. Product name is a brand’s identification of a product, often a model name, but not totally unique as it can include some product variants.

JPG You do not have the required permissions to view the files attached to this post. Please, try again later. It’s generally two to the power of however many register-select inputs there are. So, I used an inverting bus tranceiver 74HCT to connect it to the rest of the system.

Thanks for looking that up for me, Garth. Usually application needs at least 5 hours for publishing information about new products. Login or signup for Full Icecat to access all product specs. Previous topic Next topic. 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.

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More Sharing Services Share. I’m ready for another byte.

So going off this example: Cool — so you have d0 on one IC connected to d7 on the other, d1 to d6and so on? 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.

The brand’s unique identifier for a product. The have these also, and I have only used them for other things. But the data-sheet is not yet standardized by an Icecat editor. We use cookies to ensure that we give you the best experience on our website. Tue Dec 11, 8: A manufacturer can have multiple brand names.

Sorry, this information is not published yet! Download the free Open Icecat data-sheets.

Multiple product codes can be mapped to one mother product data-sheet if the specifications are identical. I remember that the little proto-board project that I did with the about 27 years ago!

74HCT640 – Octal Bus Transceiver, 3 State, TTL Logic Level

Moreover, I needed the counter to increment, not decrement– again, something you won’t find on the data sheet! If you continue to use datxsheet site we will assume that you are happy with it. Here’s what I get from page 10 of the http: Sacramento, CA, United States. The idea for use like on a parallel printer, where you write to the port for example, one line tells the dattasheet, “I have new data for you,” and the printer takes it and uses the other line to say, “Thanks.

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AnyCPU – View topic – My I/O Questions

Since the PIA has two and I think the is the same thingthat makes for four addresses. Imagine that this responsive data-sheet is included in the product page of your webshop.

What type of chip would be good for an FDC. Product name is a key part of the Icecat product title on a product data-sheet. That doesn’t mean you have to give it only four addresses.

We map away wrong codes or sometimes logistic variants. Tue Dec 31, 2: Some manufacturers license their brand names to other producers. Offhand, I’d say you made the right choice! I like how you fixed it in software! Mon Dec 31, 2: Sat Aug 03, You won’t find that on a data sheet!