Well I was hoping to get some kind of driver chip for leds and control all 16 one by one I was going through my dad's box full of electronic stuff he never uses and found a NTE2013 chip with 7 channels on both sides, and I've got the datasheet and it's kinda confusing to know what this thing actually does.
So what this thing basically do if it can be used on ardiuno (if it can use this particular driver chip)
I'm not sure anything useful this chip can do for a LED circuit or so.
The 2013 is a high voltage buffer to deliver more current than a standard pin would be able to. It has a built in flywheel diode to avoid negative voltage spikes when driving inductive loads. From what I can see it also has a Base series resistor built in too, but I'd still put 220R in series with the input just in case.
(Edited as per MarkT comment to remove negative)
You'd use it if you had something that needed more power or higher voltage than a pin can deliver.
The output pins are basically the collector of each transistor. I used a similar chip to drive relays in a soft start circuit. In that case I connected one side of the relay to 12v and the other to an output. The emitter of each of the transistors is connected to GND. So when the output is ON it has a low resistance to GND.
There are many examples of using this range 2013, 2003 etc from a Google search. They are also called darlington buffers.
davetcc:
It has a built in flywheel diode to avoid negative voltage spikes when driving inductive loads.
Positive voltage spikes.
Sorry you are right, positive voltage spikes, I'm not sure where that came from!
I see then more like a voltage spike protector I'll try something withthis chip in future projects and have it used in some way for a future project or so.