74HCT640 DATASHEET PDF

Texas Instruments 74HCT Bus Transceivers are available at Mouser Electronics. Mouser offers inventory, pricing, & datasheets for Texas Instruments . 74HCT Datasheet, 74HCT PDF, 74HCT Data sheet, 74HCT manual, 74HCT pdf, 74HCT, datenblatt, Electronics 74HCT, alldatasheet. 74HCT datasheet, 74HCT circuit, 74HCT data sheet: PHILIPS – Octal bus transceiver; 3-state; inverting,alldatasheet, datasheet, Datasheet search.

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

Tue Dec 11, 8: 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. That doesn’t mean you have to give it only four addresses. You can give it a lot more to make your address decoding hardware simpler and just not use more than four.

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. What type of chip would be good for an FDC.

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I found a datasheet at http: The idea for use like on a parallel printer, where you write to the port for example, one line datashet the printer, “I have new dataxheet for you,” and the printer takes it and uses the other line to say, “Thanks. I’m ready for another byte. The have these also, and I have only used them for other things.

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Tue Dec 31, 2: Sacramento, CA, United States. So going off this example: Here’s what I get from page 10 of the http: 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.

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. Mon Dec 31, 2: Page 2 of 2. Previous topic Next topic. Sat Aug 03, Thanks for looking that up for me, Garth. I remember that the little proto-board project that I did with the about 27 years ago!

You won’t find that on a data sheet! I dug it out and had my co-worker take a picture of its long-dead corpse. JPG You do not have the required permissions to view the files attached to this post.

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Tue Jan 15, 5: Cool — so 74hcct640 have d0 on one IC connected to d7 on the other, d1 to d6and so on? I like how you fixed it in software!

(PDF) 74HCT640 Datasheet download

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. Offhand, I’d say you made the right datashee Speaking of vagaries of VIA datashewt, this computer my KimKlone has opcodes that talk to one of a VIA’s bit counters, rendering it part of the programming model.

Moreover, I needed the counter to increment, not decrement– again, something you won’t find on the data sheet! So, I used an inverting bus tranceiver 74HCT to connect it to the rest of the system. 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.