if the five voltage input to vcc 74hc595. i looking at it on the datasheet page 5 of 13. i looking at DC SPECIFICATIONS "V OH"
High Level Output Voltage (for QA to QH outputs) approximate voltage 4.5.
how many the QA to QH able output mA? i could not find the excalty output each mA.
I am trying to figure it out by using 8x8x8 matrix.