>Maxim has such a beast, the MAX3110 and 3111:
> http://www.maxim-ic.com/quick_view2.cfm/qv_pk/2052
>
>SPI UART with RS-232 transceiver, and built
>in charge pump that uses no external caps.
>
>Of course, they are expensive ($4.75 @1k) and
>don't seem to be available as RoHS compliant.

With those charge pumps, it is probably as EMC unfriendly as their MAX232
devices that don't need charge pumps (cannot remember their exact part
number).

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