Motorola Corporation

Michael Priel

Fujio Takeda

Geoffrey B Hall

An output buffer ( ) has a pre-driver circuit ( ) for controlling a voltage transition of an output signal from an output driver transistor ( ). The pre-driver circuit ( ) provides an input that slightly leads the gate voltage of the output driver transistor ( ). The pre-driver circuit ( ) includes a configurable resistance circuit ( ) that provides one resistance value at the start of a signal transition and provides another resistance value near the end of the signal transition. A threshold detector ( ) senses a voltage level of the input signal and switches from one resistance value to the other resistance value when the input signal crosses a predetermined voltage.

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Michael Priel