Honored Contributor
Honored ContributorI'm still not sure I understood what is your problem.
Anyway the schematic confirms what I told you before. The TRI port is used to generate an internal signal but the device doesn't support internal tristate signals. Then I suppose that the compiler warns you that the TRI gate has been emulated through an OR function: TRI output = (not OE) or INPUT Regarding your final question, the equation is not valid. OPNDRN is a monodirectional gate (equivalent to a TRI with input connected to GND and oe connected to your input signal) even if it drives a bidir pin. In your schematic, output pin depends only on TRI gate output. Cris
