A voltage generating circuit, which generates tri-state logic output in accordance with high, low or floating of the input node, is proposed. The present voltage generating circuit includes: a pulse generating circuit for generating a plurality of pulses; a voltage selecting circuit having a pair of...http://www.google.com/patents/US7385422?utm_source=gb-gplus-sharePatent US7385422 - Tri-state output logic with zero quiescent current by one input control
