Patent ID: 9379700
Filing Date: 2016-06-28
CPC Classification: H03K

Claim Text:
1. A dual-voltage detector, comprising: a control input configured to receive a control signal from a first voltage domain, the control signal indicating whether or not a supply voltage for the first voltage domain is stable; a first disable output configured to have a first set of voltage levels including a voltage level when the control signal indicates that the supply voltage is stable and a different voltage level when the control signal indicates that the supply voltage is not stable, the voltage levels being in a second voltage domain; a second disable output configured to have a second set of voltage levels including a voltage level when the control signal indicates that the supply voltage is stable and a different voltage level when the control signal indicates that the supply voltage is not stable, the voltage levels being in the second voltage domain; a resistor divider coupled between a supply voltage level for the second voltage domain and a second node; and a switch coupled between the second node and ground, the switch providing the control input and being controlled by the control signal; wherein an internal node within the resistor divider is used to provide the first disable output and the second node is used to provide the second disable output.