Patent ID: 7282964

Claim:
A transition detect circuit comprising: a first input port referenced to a first supply voltage node; a second input port referenced to a second supply voltage node; a first switch coupled to a first output node and having a control node coupled to the first input port; a second switch coupled to a first output node and having a control node coupled to the second input port; a third switch coupled to a second output node and having a control node coupled to the first input port through an inverter; a fourth switch coupled to a second output node and having a control node coupled to the second input port through an inverter; a fifth switch coupled to the first output node; a sixth switch coupled between the fifth switch and the second supply voltage node; a seventh switch coupled to the second output node; an eighth switch coupled between the seventh switch and the second supply voltage node; a first feedback path from the first output node to a control node of the sixth switch; and a second feedback path from the second output node to a control node of the eighth switch.