| 摘要 |
A buffer, driver, or level-shifting circuit having an input (IN) connected to signal inputs (51, 53) of a pair of comparators (41, 43) and an output (OUT) connected between a pair of pull-up and pull-down transistors (45, 47) controlled by the comparators. A first reference voltage applied to the reference input (55) of the comparator (41) controlling the pull-up transistor (45) is selected to be less than the nominal transition point of the circuit, while a second reference voltage applied to the reference input (53) of the comparator (43) controlling the pull-down transistor (47) is selected to be greater than the nominal transition point of the circuit, thereby allowing the circuit to recognize the beginning of the signal transitions on its input sooner.
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