Tri state circuitry 112 is provided in {TAIL ~ drive circuitry} 106 to selectively place the internal interconnects 108 in {HEAD ~ a tri state condition} 
Tri state circuitry 112 is provided in { TAIL ~ drive circuitry } 106 to selectively place the internal interconnects 108 in { HEAD ~ a tri state condition }
OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD