System for sequencing a first node voltage and a second node voltage

摘要

A sequencing system for sequencing a first node voltage at a first node and a second node voltage at a second node which is less than the first node voltage is disclosed. The sequencing system includes a bias circuit configured to provide a bias current in response to the first node voltage beginning to change to a first supply voltage. The sequencing system includes a switch configured to provide a low impedance path between the first node and the second node when the bias circuit is providing the bias current. The switch is configured to provide a high impedance path when the second node voltage is within a range of a second supply voltage which is less than the first supply voltage.