A bipolar voltage translator contains a pair of differentially coupled transistors (Q1 and Q2) for converting an input voltage (V.sub.IN) supplied to one (Q1) of the pair into an output voltage (V.sub.OUT) taken between the other (Q2) and a first resistor (R9). A further transistor (Q4) coupled through...http://www.google.com.au/patents/US4491743?utm_source=gb-gplus-sharePatent US4491743 - Voltage translator
