An input buffer circuit simultaneously supports a low voltage interface and a general low voltage transistor-transistor logic (LVTTL) interface and operates at high speed. In the input buffer circuit, a self bias voltage generated by a self biased differential amplification circuit is used not only for...http://www.google.es/patents/US6452429?utm_source=gb-gplus-sharePatente US6452429 - High speed input buffer circuit for low voltage interface
High speed input buffer circuit for low voltage interface
