The driver circuits {HEAD ~ 106 and 106′} provide {TAIL ~ differential signals} on the interconnects which have a reduced voltage swing that is less than a voltage differential of a single power supply, or a single pair of voltage rails 
provide
The driver circuits { HEAD ~ 106 and 106′ } provide { TAIL ~ differential signals } on the interconnects which have a reduced voltage swing that is less than a voltage differential of a single power supply , or a single pair of voltage rails
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD 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 OTH OTH OTH OTH OTH OTH