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From: jimi on 30 Nov 2006 16:24
Does anyone know of an alternative for the 74C925 chip for driving 4x7
segment LED's. The chip seems to be obsolete. Thanks

From: Richard Seriani, Sr. on 30 Nov 2006 17:47

"jimi" <jim_fen05(a)yahoo.co.uk> wrote in message
news:1164921879.228720.296040(a)f1g2000cwa.googlegroups.com...
> Does anyone know of an alternative for the 74C925 chip for driving 4x7
> segment LED's. The chip seems to be obsolete. Thanks
>
I've never dealt with this company, but your 74C925 does show up in a seach.

http://www.hobid.com/itk/12.html

Good luck.
Richard


From: bill.sloman on 30 Nov 2006 19:35

jimi wrote:
> Does anyone know of an alternative for the 74C925 chip for driving 4x7
> segment LED's. The chip seems to be obsolete. Thanks

Use a programmable logic device or an Arizona Microsystems PIC
processor - I'm not far enough into either option to identify a part
which comes in the right 16-pin 0.3" dual-in-line package (and it
might be difficult to find a programmable logic device with enough
buried flip-flops to do the job in an essentially obsolescent package)
but somebody will know.

--
Bill Sloman, Nijmegen (but in Sydney at the moment).

From: Don Lancaster on 30 Nov 2006 19:44
bill.sloman(a)ieee.org wrote:
> jimi wrote:
>
>>Does anyone know of an alternative for the 74C925 chip for driving 4x7
>>segment LED's. The chip seems to be obsolete. Thanks
>
>
> Use a programmable logic device or an Arizona Microsystems PIC
> processor - I'm not far enough into either option to identify a part
> which comes in the right 16-pin 0.3" dual-in-line package (and it
> might be difficult to find a programmable logic device with enough
> buried flip-flops to do the job in an essentially obsolescent package)
> but somebody will know.
>
Maxim has some super duper new LED drivers.

--
Many thanks,

Don Lancaster voice phone: (928)428-4073
Synergetics 3860 West First Street Box 809 Thatcher, AZ 85552
rss: http://www.tinaja.com/whtnu.xml email: don(a)tinaja.com

Please visit my GURU's LAIR web site at http://www.tinaja.com
From: bill.sloman on 1 Dec 2006 05:38

Don Lancaster wrote:
> bill.sloman(a)ieee.org wrote:
> > jimi wrote:
> >
> >>Does anyone know of an alternative for the 74C925 chip for driving 4x7
> >>segment LED's. The chip seems to be obsolete. Thanks
> >
> >
> > Use a programmable logic device or an Arizona Microsystems PIC
> > processor - I'm not far enough into either option to identify a part
> > which comes in the right 16-pin 0.3" dual-in-line package (and it
> > might be difficult to find a programmable logic device with enough
> > buried flip-flops to do the job in an essentially obsolescent package)
> > but somebody will know.
> >
> Maxim has some super duper new LED drivers.

Maxim has more vapourware tahn we can all shake a stick at.

Do these LED dirivers include 4-digit counters with multiplexed
7-segment output drivers?

http://pdf1.alldatasheet.co.kr/datasheet-pdf/view/53737/FAIRCHILD/74C925.html

--
Bill Sloman, Nijmegen (but in Sydney at the moment).

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