Patent ID: 9059692
Filing Date: 2015-06-16
Classification: H03K

Abstract:
1. An apparatus comprising: an input to receive a voltage; a threshold voltage circuit configured to provide an adjustable first threshold voltage at a first output of the threshold voltage circuit and an adjustable second threshold voltage at a second output of the threshold voltage circuit, wherein the second threshold voltage is less than the first threshold voltage; a comparison circuit communicatively coupled to the input and the threshold voltage circuit, the comparison circuit including a first comparator and a second comparator configured to: an output of the first comparator and an output of the second comparator configured to provide a first indication when the input voltage is greater than the first voltage threshold and to provide a second indication when the input voltage is less than the second voltage threshold, wherein the output of the first comparator is disabled to a first binary logic state and the output of the second comparator is disabled to a second binary logic state when a disable input of the comparison circuit is activated; and a logic circuit communicatively coupled to the output of the first comparator and the output of the second comparator, wherein the logic circuit is configured to maintain a logic state of the output of the first comparator and the output of the second comparator when the disable input of the comparison circuit is activated.