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