Patent ID: 9197213
Filing Date: 2015-11-24
Classification: H03K

Abstract:
1. A level shifter, comprising a first voltage converter, having an input coupled to a first input node and an output coupled to a first node; a first pull-up transistor, coupled between a power node and a third node, and having a gate coupled to the first node; a first pull-down transistor, coupled between a fourth node and a reference node, and having a gate coupled to a first input node; a second voltage converter, having an input coupled to a second input node and an output coupled to a second node wherein a voltage level at the second input node is opposite to a voltage level at the first input node; a second pull-up transistor, coupled between the power node and the fourth node, and having a gate coupled to a second node; a second pull-down transistor, coupled between the third node and the reference node, and having a gate coupled to a second input node; a third inverter, having an input coupled to the third node and an output coupled to the fourth node; and a fourth inverter, having an input coupled to the fourth node and an output coupled to the third node.