Hi. I'm building a tetris game and I'm really constrained by which type of circuit to use.
First try: Using two 74hc595 without any power drivers. My teacher: use some power drivers besides them.
Second try: Using two max7219 led drivers. My teacher: Naah, too easy.
Question. Is there any kind of 74hc595 but which can handle more power?
Yes: tpic6c595!
Warning: tpic's outputs can only sink current. They cannot source current. Keep this in mind when you design your matrix.
If you need to source more current, you can put a pnp transistor on each output of a 74hc595.
Paul
Yes, I did spot that after I first posted. OK, forget it ...
Paul__B, did you not spot this quote from the OP's teacher?
Second try: Using two max7219 led drivers. My teacher: Naah, too easy.
Not to say we shouldn't challenge teachers when necessary, but it sounds like this one knows what he/she is talking about. May be they want the OP to learn about multiplexing.
How about this one: TLC5925IPWR? is it ok? does it sink current?
Or this one: SCT2210CSSG
If your teacher is guiding your choices, it is him to whom you should be posing these questions - not us! 
alexmath:
How about this one: TLC5925IPWR? is it ok? does it sink current?
alexmath:
Or this one: SCT2210CSSG
Those might also work. Make sure you buy the chip in a package you can work with, for example DIP. Also check with your teacher that these chips do not make the project "too easy".
