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