The first voltage signal has a voltage swing which is less than {HEAD ~ a voltage differential} between {TAIL ~ the voltage supply connections} 
between
The first voltage signal has a voltage swing which is less than { HEAD ~ a voltage differential } between { TAIL ~ the voltage supply connections }
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 TAIL