On Sat, 14 May 2005 23:17:37 -0400, Spehro Pefhany wrote:
>=A0At 08:58 PM 5/14/2005 -0500, you wrote:
>=A0>Another good tip along the lines of "killing two birds with one ston=
e"
>=A0>is to use a MAX3232 instead of a MAX232(A). They are pin compatible
>=A0>with the MAX232(A), about the same price as a MAX232A and (most
>=A0>importantly) work with 3V to 5V supplies. I do more 3V designs these
>=A0>days than 5V so it's really nice to only have to stock one part for
>=A0>either voltage. They also work with ceramic caps (I use 470nF to 1uF=
)
>=A0>and they're made by the usual suspects - Maxim, TI, Sipex, ST, et. a=
l.
>=A0>
>=A0>Matt Pobursky
>=A0>Maximum Performance Systems
>=A0
>=A0How have you found the reliability of those units? Had one failure (S=
T).

I've used a few Maxim parts, a moderate number of ST parts (100's) and
lots of TI parts (1000's). I haven't seen any failures with any of them
yet. I did notice the ST parts seemed to be somewhat noisy on their
charge pump outputs but it didn't seem to affect the operation at all.=20

I haven't used any in a medical design yet (although I will be later
this summer) and that will probably be revealing as they will get
zapped with up to 18KV for ESD testing.

Matt Pobursky
Maximum Performance Systems

--=20
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist