/^[ ]+Pin:[ ]*([^\.]*)\.([^ ]*)$/  
--> Matches "  Pin:  U714.QN"
$1 = U714
$2 = QN

and

/^[ ]+Pin:[ ]*([^\.]*)\.([^ ]*)[ ]out/ 
--> Matches "  Pin:  U713.INP out"
$1 = U713
$2 = INP