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SNN1 from Rochester Electronics

Home Questions Tags Users Unanswered. Of course, those things have been obsolete for decades, so finding them is Besides, your question is really underspecified and smells like an XY problem daatsheet miles away. As you can imagine, this was a rather common function in electronics devices, hence why the chips are readily available. Then, of course, your 6 ICs will draw worst case as much as mA each, so you’re looking at mA. On page 6 or there is a cascaded circuit using 6 chips for dxtasheet BCD digits input and 10 binary output bits.

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You’ll also need some extra protection logic, since with a 3-digit input there is always the chance that you will inadvertently try to enter a number in excess ofand the results of that will not be pretty.


The reason for this is that there is no common reason for a BCD to binary converter. Of course you may use a PROM with 8 inputs and 8 outputs too. As has been pointed out in other answers, you can use the venerable and I do mean venerable If you go on eBay, you can get 20 year old Russian knockoffs for a couple of bucks apiece. You’ll need 6 for converting 0 to Dec 21 ’17 at Uwe 3 5.

So I’ve been looking all over the internet for a Decimal to Binary converter but all I’ve been able dtasheet find are Binary to Decimal converters, and Decimal to BCD circuits, does anyone have one? The extra protection logic is necessary only if the result should be represented with 8 bits 0 to only. Jon 3, 7 Decimal to Binary [closed] Ask Question.

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The circuit with 6 ICs does convert all 3 digit BCD numbers to a correct result with 10 binary bits. Overall, in terms of circuit board size, power dissipation and error resistance, you’re much better off programming a 4k x 8 PROM such as a Without knowing much more about the problem you are trying to solve, your best bet is to use a cheap microcontroller.

The purpose of the many binary to BCD converter ICs that are around are to support 7-segment displays in the pre-cheap-microcontroller era.


Where do the BCD digits come from that you need to convert? Where are the 3 digits coming from?

You could also make something using discrete logic, which would be a good learning exercise, but will quickly become a reasonably complicated project in itself. Thumb wheels cheap from China? If this question can be reworded to fit the rules in the help centerplease edit the question.

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Without an MCU, it’s going to quickly be a mess of logic chips and wires, if you need more than two digits For a complete 3 digits BCD to binary converter you need 10 output bits for numbers from 0 to Or you do a single chip solution using a PROM with 12 inputs and 10 outputs. Please clarify your specific problem or add additional details to highlight exactly what you need.

This comes in a 28 pin DIP, and they are readily available and easily programmed. Yes, you’ll struggle to find one.

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