Serial conditioning chips.

Mot. MC145407. No supply problems (yet, Clay...)

Ace

Clay Cowgill wrote:

> > Oh yeah, what do you want to know about Serial Port Hardware? Maxim will
> > probably be your friend and eliminate the need for 12v supplies. They've
> > got some great chips that only need 3.3 or 5.0, and have built in charge
> > pumps to get it up to 12v..
> >
> Aiiiiigh! Kurt said the "M" word!!! (maxim) My VP of engineering "will
> personally fire anyone that specs a Maxim part into a design as a sole
> source". Horrible supply/volume problems. Maybe it's just the Pacific
> Northwest, but everyone I talk to around here has problems with Maxim
> production quantities... Probably directly related to that "we never
> obsolete anything" policy (so the fabs are busy with smalls runs of dreck
> all the time). They make neat stuff though, and supply might not be a big
> deal if you're not building 100K's a month...
>
> As an alternative, Sipex makes the SP207. It's a MAX207 clone. The 207 is
> nice 'cause you can use external .1uf ceramic caps for the charge pumps
> instead of electrolytics. Smaller, snazzier, etc. We use 'em on all our
> external serial modem designs. Analog Devices and National clone it too...
>
> -Clay

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