#### Deagol_the_Dead

##### New Member

I am having trouble understanding the whole "source/sink" deal.

Does "source" mean draw 25mA from the chip (output)?

Does "sink" mean the chip can draw (input) 25mA? :?:

Let's say, at 5V, 25mA, R would need to = 200 Ohms, right?

If R = 50 ohms, the chip would try to output 100mA (and burn up?)?

If R = 250 ohms, the chip would only output 20mA?

Sorry if this sounds trivial, but for some reason I am having a hard time getting it! :cry:

Thanks!