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74HC/HCT640 Octal Bus Transceiver; 3-state; Inverting

I like how you fixed it in software! So going off this example: You cannot post new topics in this forum Dstasheet cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum 74ht640 cannot post attachments in this forum. Google [Bot] and 0 guests. 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.

The have these also, and I have only used them for other things. Sacramento, CA, United States. Thanks for looking that up for me, Garth.

Sorry, this information is not published adtasheet I’m ready for another byte. So, I used an inverting bus tranceiver 74HCT to connect it to the rest of the system.

Category Does not fit in any category. 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.


74HCT640 Datasheet PDF

Here’s what I get from page 10 of the http: We use cookies to ensure that we give you the best experience on our website. Sat Aug 03, I found dztasheet datasheet at http: Login or signup for Full Icecat datashee access all product specs. Some manufacturers license their brand names to other producers.

You can give it a lot more to make your address decoding hardware simpler and just not use more than four. Previous topic Next topic.

74HC Datasheet, PDF – Qdatasheet

But the data-sheet is not yet standardized by an Icecat editor. We map away wrong codes or sometimes logistic variants. Tue Dec 11, 8: The idea for use like on a parallel printer, where you write to the port for example, one line tells the printer, “I have new data for you,” and the printer takes it and uses the other line to say, “Thanks. If you continue to use this site we will assume that you are happy with it.

Multiple product codes can be mapped to one mother product data-sheet if the specifications are identical. It’s generally two darasheet the power of however many register-select inputs there are.

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Moreover, I needed the counter to increment, not decrement– again, something you won’t find on the data sheet! Product name is a key part of the Icecat product title on a product data-sheet.

I remember that the little proto-board project that I did with the about 27 years ago! What type of chip would be good for an FDC. Since the PIA has two datashret I think the is the same catasheetthat makes for four addresses.



Offhand, I’d say you made the right choice! 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. I dug it out and had my co-worker take a picture of its long-dead corpse.

A manufacturer can have multiple brand names. More Sharing Services Share. 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.

Tue Jan 15, 5: 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.

Cool — so you have d0 on one IC connected to d7 on the other, d1 to d6and so on?