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'uPC reset chips for PIC for brownout protection,, '
1996\10\09@033041 by NEIL GANDLER

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I want to be able to automatically reset a 16C74 when VDD drops
below 4.75 volts. I have researched IC's from Seiko and Dallas Semiconductor.
The biggest problem is finding a no-nonsense source for these components
in small quantities for prototyping. Perhaps someone has an alternative
component/source. Thanks.

               Neil Gandler

1996\10\09@042834 by Mark K. de Jong

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>> spam_OUTV064MB9KTakeThisOuTspamubvms.cc.buffalo.edu spake thusly:

>  I want to be able to automatically reset a 16C74 when VDD drops
> below 4.75 volts. I have researched IC's from Seiko and Dallas Semiconductor.
> The biggest problem is finding a no-nonsense source for these components
> in small quantities for prototyping. Perhaps someone has an alternative
> component/source. Thanks.

checkout MAXIM they have several chip to do that, and they send sample's

>                 Neil Gandler
> --

Mark de Jong                                Tasking Software BV
Programmer
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fax:        +31 33 455 10 05                P.O. Box 899
email:      .....mark_de_jongKILLspamspam@spam@tasking.com        3800 AW  Amersfoort
WWW:        http://www.tasking.com          The Netherlands
CompuServe: GO TASKING
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1996\10\09@111926 by David Schmidt

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I've been using the Panasonic brand voltage supervisors from Digi-Key.
$1.09 in single qty ( $0.78 for 100 QTY).  They're easy to get and
come in all sorts of voltage ranges.
The root part number is
MN1381 - X    where X is an alpha character corresponding to the voltage
setting.  Look them up on Digi-Key's web page.
Dave

At 03:19 AM 10/9/96 -0500, you wrote:
> I want to be able to automatically reset a 16C74 when VDD drops
>below 4.75 volts. I have researched IC's from Seiko and Dallas Semiconductor.
>The biggest problem is finding a no-nonsense source for these components
>in small quantities for prototyping. Perhaps someone has an alternative
>component/source. Thanks.
>
>                Neil Gandler
>
>

1996\10\10@023930 by icio culibrk

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SendTo: piclistspamKILLspammitvma.mit.edu


NEIL GANDLER <.....V064MB9KKILLspamspam.....UBVMS.CC.BUFFALO.EDU> wrote:
> I want to be able to automatically reset a 16C74 when VDD drops
> below 4.75 volts. I have researched IC's from Seiko and Dallas Semiconductor.
> The biggest problem is finding a no-nonsense source for these components
> in small quantities for prototyping. Perhaps someone has an alternative
> component/source. Thanks.

Try at Maxim! http://www.maxim-ic.com (or http://www.max-ic.com, I'm not sure)
They have a lot of processor supervisory ICs, and if you need only a few
pieces, you can obtain that as free samples, yust fill the form and
they'll send the chips to you.

Regards,

Mauricio

EraseMEmauriciospam_OUTspamTakeThisOuTarne.si

1996\10\10@031913 by Steve Hardy

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> From: mauricio culibrk <mauricio.culibrkspamspam_OUTsnet.FER.UNI-LJ.SI>
> > The biggest problem is finding a no-nonsense source for these components
> > in small quantities for prototyping. Perhaps someone has an alternative
> > component/source. Thanks.
>
> Try at Maxim! http://www.maxim-ic.com (or http://www.max-ic.com, I'm not sure)
> They have a lot of processor supervisory ICs, and if you need only a few
> pieces, you can obtain that as free samples, yust fill the form and
> they'll send the chips to you.

I tried this months ago and still haven't got the samples.  Perhaps they
don't ship down under?  But then again, perhaps that serial ADC contained
DES encryption - prohibited export...

Regards,
SJH
Canberra, Australia

1996\10\10@042421 by Mark K. de Jong

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{Quote hidden}

I have received several samples from MAXIM with no problems.


Greeting Mark de Jong
        RemoveMEmarkjTakeThisOuTspamworldaccess.nl

1996\10\10@061107 by Clyde Smith-Stubbs

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Steve Hardy <spamBeGonehardyspamBeGonespamSWENG.STORTEK.COM> wrote:

> I tried this months ago and still haven't got the samples.  Perhaps they

I ordered some and got them within a week!

--
Clyde Smith-Stubbs       | HI-TECH Software,       | Voice: +61 7 3354 2411
TakeThisOuTclydeEraseMEspamspam_OUThitech.com.au      | P.O. Box 103, Alderley, | Fax:   +61 7 3354 2422
http://www.hitech.com.au | QLD, 4051, AUSTRALIA.   |
---------------------------------------------------------------------------
For info on the World's best C cross compilers for embedded systems, point
your WWW browser at http://www.hitech.com.au, or email RemoveMEinfospamTakeThisOuThitech.com.au

1996\10\10@095253 by optoeng

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Steve Hardy wrote:
>
> > From: mauricio culibrk <mauricio.culibrkEraseMEspam.....snet.FER.UNI-LJ.SI>
> > > The biggest problem is finding a no-nonsense source for these components
> > > in small quantities for prototyping. Perhaps someone has an alternative
> > > component/source. Thanks.
> >
> > Try at Maxim! http://www.maxim-ic.com (or http://www.max-ic.com, I'm not sure)
> > They have a lot of processor supervisory ICs, and if you need only a few
> > pieces, you can obtain that as free samples, yust fill the form and
> > they'll send the chips to you.
>
> I tried this months ago and still haven't got the samples.  Perhaps they
> don't ship down under?  But then again, perhaps that serial ADC contained
> DES encryption - prohibited export...
>
> Regards,
> SJH
> Canberra, Australia

Many Maxim parts are on allocation, and Maxim have been having serious
problems delivering.
The Telcom TC54 series are readily available from Digikey and others.
Beware that the pinout differs from Maxim parts that appear to be
interchangeable.

--

Paul Mathews, consulting engineer
AEngineering Co.
EraseMEoptoengspamwhidbey.com
non-contact sensing and optoelectronics specialists

1996\10\10@125424 by Richard Booth

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Steve Hardy wrote:
>
> > > The biggest problem is finding a no-nonsense source for these
> > > components in small quantities for prototyping. Perhaps someone
> > > has an alternative component/source. Thanks.
> >
> > Try at Maxim! http://www.maxim-ic.com (or http://www.max-ic.com, I'm not sure)
> > They have a lot of processor supervisory ICs, and if you need only a
> > few pieces, you can obtain that as free samples, yust fill the form
> > and they'll send the chips to you.
>
> I tried this months ago and still haven't got the samples.  Perhaps
> they don't ship down under?  But then again, perhaps that serial ADC contained
 DES encryption - prohibited export...
>
> Regards,  SJH  Canberra, Australia

This does not sound like MAXIM!! I've Emailed request on a Sunday
evening
and had parts on Wednesday!! This was MAX186 A/D chip. Follow-up your
request.  It might have gotten lost.  Their address is:
  http://www.maxim-ic.com

I checked with MAXIM and they do NOT have encrypted parts. Digi-Key is
my favorite small run supplier.  No surcharge is order is $25 or above.
They also carry MAXIM line.  They accept VISA and MasterCard. URL is:
  http://www.digikey.com

Dick Booth;  Cupertino, CA USA

1996\10\10@162625 by dontronics

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Richard Booth wrote:
>
> Steve Hardy wrote:
> >
> > > > The biggest problem is finding a no-nonsense source for these
> > > > components in small quantities for prototyping. Perhaps someone
> > > > has an alternative component/source. Thanks.
> > >
> > > Try at Maxim! http://www.maxim-ic.com (or http://www.max-ic.com, I'm not sure)
> > > They have a lot of processor supervisory ICs, and if you need only a
> > > few pieces, you can obtain that as free samples, yust fill the form
> > > and they'll send the chips to you.
> >
> > I tried this months ago and still haven't got the samples.  Perhaps
> > they don't ship down under?  But then again, perhaps that serial ADC
contained
{Quote hidden}

I have to endorse what Steve says here.
Veltek are the suppliers of Maxim and Dallas parts in Australia.
They don't seem to like customers that don't buy in at least 1K
quantities.
You don't get a free manual for anything, it's user pays.
You can't get an order for under $50 AUD.
You must ring the order in, you can't just drop in.
I wanted a Data Manual that they sold for $10. It was a major operation.
I just dropped in to pick it up and had to seek special approval to get
just a manual, and they still wanted me to ring it in, 'but I'm here' I
told them!. Can I use your phone?

If you live in Australia, my advice is to forget using Maxim or Dallas
parts unless you use them in large quantities.

On the other hand, I order from DigiKey US for those special parts on a
regular basis, however the $5 foreign fee plus the cost of Air mail
postage, sending a catalog, a box full of packaging, 5 invoices, Oh, and
plus the goods, makes the postage charges for any item around $30 to $40
USD per order.

You have to order a lot of items at once to spread the costs out over
each unit.

Don...

Don McKenzie RemoveMEdonmckEraseMEspamEraseMElabyrinth.net.au
DonTronics Tullamarine, Australia
http://www.labyrinth.net.au/~donmck

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1996\10\11@024930 by Werner Terreblanche

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>This does not sound like MAXIM!! I've Emailed request on a Sunday
>evening and had parts on Wednesday!! This was MAX186 A/D chip.
>Follow-up your request.  It might have gotten lost.  Their address is:
>   http://www.maxim-ic.com

I'm sorry to say that I dont quite agree with you.  I also used the MAX186 in a
desgin
and the Maxim agents was able to supply me with a prototipe IC quite
quicly.  However when my client went into production he had *great*
difficulty getting production quantity MAX186 chips anywhere in the
world, including Digikey.

Regards
Werner

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