Level Conversion Between CMOS And RS232

Hi,
I am trying to find a CMOS chip which can perform conversion
between RS232 and CMOS levels. I've heard of the MAX232 chip but
havent found documentation and I dont know if it is CMOS or TTL. If
anyone knows of such a chip, or if the MAX232 is CMOS, Id appreciate
the info.
Thanks,
James