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Subject: Re: I need an 8 to 256 decoder or equivalent
X-Newsreader: Microsoft Outlook Express 6.00.2800.1106
Date: Sat, 16 Nov 2002 16:41:48 -0800
NNTP-Posting-Date: Sat, 16 Nov 2002 16:53:16 MET
Organization: @Home Network
"Uwe Bonnes" wrote in message
> Paul Burke wrote:
> : David Jones wrote:
> :> I'm trying to use an 8 bit binary input to select 1 of 256 different
> :> LEDS(I'm using leds as an example). I know there exists a 4bit input 16
> :> output decoder but I don't know how to get 256 options using it with
> :> IC's. How do I make the equivalent of an 8 to 256 decoder with the
> :> discete components? any suggestions are welcome.
> :> thanks
> : That's a lot of output. If you REALLY need to do it that way, I'd
> : suggest a Xilinx coolrunner, say a 256 cell version. You might need a
> : couple of those, still, I've forgotten how many IOs they have.
> If you go with the BGA packages, you will get need one package. But i
> suggest 4 XC9572XL-10TQ100C for about 2.4$ each (nuhorizons.com) with 72
> usable IO (8 for your input, 64 as outputs)
I think the OP is not capable of using CPLD/FPGAs.. If he could he probably
did not ask his question...
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