> I'm looking for recommendations for a single-package solution 
> to interface a 
> PIC to an outside-world serial port.  I have +/-18V supplies 
> available, so I 
> don't need a charge pump device like the MAX232 (and it's 
> extra caps).  The 
> TI SN75155 would do the job, but it costs more than the 
> MAX232 does, and 
> this is a cost-sensitive project.  Any ideas?

1488 / 1489's are dirt cheap, but you would need two chips.

you could use a max232 but feed the +/- directly, so no need for the
capacitors. I don't know if they would survive 18V.

AFAIK there is a max232 variation that has no charge pump, check the
datasheet (they are all in one datasheet). But a cheap max232 clone
(hin232, icl232) is probably cheaper.

Wouter van Ooijen

-- -------------------------------------------
Van Ooijen Technische Informatica: www.voti.nl
consultancy, development, PICmicro products
docent Hogeschool van Utrecht: www.voti.nl/hvu
 
 

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