{HEAD ~ A first transistor}, in responsive to the output of the amplifier, biases {TAIL ~ the input} of the amplifier to assure substantially no static current flows through the amplifier when a logic low is present on the amplifier output 
{ HEAD ~ A first transistor } , in responsive to the output of the amplifier , biases { TAIL ~ the input } of the amplifier to assure substantially no static current flows through the amplifier when a logic low is present on the amplifier output
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH