schematic of HD-1530 DTMF Decoder - Need LS7225 IC

Alex [Temple-Heath List] temple.heath1 at MIWWW.COM
Thu Aug 2 09:15:07 EDT 2007


Hi Leon et list,

Will get the HD-1530 schematic scanned today, email it to Leon, and 
FTP to BAMA. Thanks to everyone that replied to my inquiry.

In regards to the LS7225 IC, followed Leon's suggestion and noticed a 
list of distribuitors at the LSI/CSI website. Purchased 2 pcs at 
$2.30 ea. from this one: Gemini Electric, Phone: 800-882-6414, 
http://www.geminielec.com

Thanks.
-Alex



At 10:41 PM 8/1/2007, you wrote:
>LSI still makes them. they will give you a free
>sample. go to their website LSI computer
>leon @ technoloy systems
>www.tech-systems-labs.com
>
>--- "Alex [Temple-Heath List]"
><temple.heath1 at MIWWW.COM> wrote:
>
> > Thanks to the schematic I determined that I need to
> > replace the
> > 443-1290 IC, which crosses to LS7225. Does anyone by
> > any chance have
> > a spare they would consider selling/trading? Not
> > sure Heath used this
> > part in any other gear besides the HD-1530.
> >
> > More info on the LS7225 (and LS7226):
> > http://www.ortodoxism.ro/datasheets/lsi/LS7226.pdf
> >
> > BTW, no luck with the usual sources (Mouser,
> > Digiket, etc). Not much
> > interest in buying from the "obsolete parts"
> > overpriced "RFQ" sellers
> > out there.
> >
> > Thanks.
> >
> > -Alex
> >
> >
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