Content originally posted in LPCWare by extest on Sun May 08 18:11:30 MST 2016
Ah, right. So 3.3-1.4=1.9V, 1.9/390=4.87mA.
That still leaves me with two questions:
1) How are the LPC micro GPIO pins sinking more than 4mA.
2) How is the 6N137 operating when the min current is 5mA.
Thanks!