The present invention relates to {HEAD ~ circuits} that are used to change {TAIL ~ the logic levels} from those useful of one family of devices to those useful of another family of devices to effect communication between devices of these two families 
The present invention relates to { HEAD ~ circuits } that are used to change { TAIL ~ the logic levels } from those useful of one family of devices to those useful of another family of devices to effect communication between devices of these two families
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH REL REL REL REL TAIL 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