GPS EM-406A and RS232

Hello every one !

I recently bought a GPS EM-406A.

I directly plug the GPS to my PIC and it’s working but with some troubles.

When I open the EM-406A datasheet, I can see : RS232 level.

My question : Do I need a MAX 232 or something like that to inerface the GPS to my 18f4520 ?

Best regards

Hoffmann

PS : It is also written :

TTL level, Output voltage level: 0V ~ 2.85V