question for all you MAX7219 users...

i’ve been using the Nexus Machines LED matrices with Arduino, that have the MAX7219 chip built into it, but now i’m building my own, and i cant find any details on whats the maximum specs of LEDs you can use with the chip. i need them to be as bright as possible while still working on 5volts from the arduino board.

i’ve checked through the data sheets a million times and cant seem to find anything. am i just blind or what? :-?