I was looking around the net and there is awful lot of different answers, how much current are the chips actually able to provide.
The datasheet clearly says max. 35mA/pin, max 70mA through Vcc or Vss and power dissipation of 500mW
I see a lot of projects around, that are exceeding these limits.
Yep. There's no confusion over it or "different answers". The specification says 70mA per chip.
Quote from: fungus on Nov 18, 2013, 10:00 amYep. There's no confusion over it or "different answers". The specification says 70mA per chip.Per pin, in what I linked.
Maybe I'm not reading this right, or this is a different chip, but this one looks like it is 35 mA per pin. Or am I misinterpreting?
So I was wondering if the "real life" practice is that the chips are capable of supplying more than the datasheet says and asking if someone is actually sucessfully stressing the 595's above the datasheet values.
If I connect four leds with anode and four leds with cathode to the 595, I'll get up to 140mA per chip (70mA through Vcc pin when four outputs are high and sinking current through four leds to the ground and 70mA through Vss pin when four outputs are low sinking current from 4 LEDs connected to Vcc) at the same time. Am I correct?