A semiconductor device has a plurality of transistor pairs. Each transistor pair includes a p-channel current path having a pair of p-type current terminal regions arranged by sandwiching a high resistivity first channel region and an n-channel current path having a pair of n-type current ...http://www.google.com/patents/US5684320?utm_source=gb-gplus-sharePatent US5684320 - Semiconductor device having transistor pair
