Ok, I'm starting to play with the stellaris launchpad. The high logic output of any gpio pin is 2.4V min. The high logic input of the L293(quad half H-Bridges) is 2.3V. The interfacing is unidirectional, of course, from the stellaris to the L293. The input high current off the L293 is 100uA max, so no problem here, the stellaris could suply this without problem.
I think high logic voltage of both chips are very close, so I don't know if the L293 will work reliably. ¿Anybody have some experience with similar interfaces? I can easyly level shift with some transistors or fets, but if I can get away without, i prefeer so. Also... ¿Some similar chip to the L293, but with the logic side at 3V3?
Thanks in advance.