{TAIL ~ A Darlington connected pull up circuit} is also provided in {HEAD ~ parallel} with the feedback transistor which further enhances switching speed 
{ TAIL ~ A Darlington connected pull up circuit } is also provided in { HEAD ~ parallel } with the feedback transistor which further enhances switching speed
TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH