A cascode I/O driver is described that includes a barrier formed in {HEAD ~ the shared region} between {TAIL ~ the two transistors} 
between
A cascode I / O driver is described that includes a barrier formed in { HEAD ~ the shared region } between { TAIL ~ the two transistors }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL