Vorrichtung zur Aktivierung einer Logikeinrichtung

摘要

An apparatus for activating a dual-mode logic device (16, 28) is provided. The apparatus monitors a parameter of an input signal of the logic device (16, 28). If the parameter falls outside of predetermined parametric ranges, the apparatus activates the logic device (16, 28). In the preferred embodiment, the apparatus resides on the same semiconductor chip as the logic device (16, 28), and monitors the voltage level of the input signal. If the voltage level falls outside the voltage range which represents a logical HIGH and the voltage range which represents a logical LOW, the apparatus activates the logic device (16, 28).