I'm working on a project trying to multiplex a 9x9 grid of RGB LED's. I'm currently using these components:
9.6V 3Ah battery supply for Vled
TLC5940 driverCD74HCT42E decoder
I'm also using the Vishay IRF9510
NPN transistor to source (9x3x20mA) .54A
The issue is that in order to turn the transistor OFF, my gate voltage has to equal my source voltage (9.6V). I would prefer to use my arduino's 5V/3.3V supply as the supply (gate) for my mux(transistors) rather than my LED power supply.
What are some good transistors ppl commonly use for this kind of application? (Or at least a better mux that can take a 9.6V supply and is active low)
Source = 9.6V
gate = ground or 3.3/5V
drain = LED->TLC5940 current sink
I've done LOTS of research but aren't sure what would work best for this application. I really appreciate any input. Thanks!