n channel transistors receiving said second bias current input, another of said n channel transistors receiving said second bias current input and being connected to a select transistor having desired characteristics to maintain current mirroring between each of said at least one source transistors and between each of said at least one sink transistors, thereby causing said at least one source transistors and said at least one sink transistors to remain in {HEAD ~ the saturation region} for {TAIL ~ the entire range} of output swing 
n channel transistors receiving said second bias current input , another of said n channel transistors receiving said second bias current input and being connected to a select transistor having desired characteristics to maintain current mirroring between each of said at least one source transistors and between each of said at least one sink transistors , thereby causing said at least one source transistors and said at least one sink transistors to remain in { HEAD ~ the saturation region } for { TAIL ~ the entire range } of output swing
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH 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 OTH OTH OTH