The driver circuits 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 {HEAD ~ voltage rails} 
The driver circuits 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 { HEAD ~ voltage rails }
OTH OTH OTH OTH OTH OTH OTH 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 HEAD HEAD HEAD HEAD HEAD HEAD