Patent ID: 8502592
Filing Date: 2013-08-06
Classification: H03K

Abstract:
1. A level shift circuit which includes an input terminal and an output terminal, converts an input signal input to the input terminal and having a first voltage amplitude into an output signal having a second voltage amplitude, and outputs the output signal from the output terminal, the level shift circuit comprising: a precharge circuit; a first node and a second node which are precharged to a high level in a stably operating state by the precharge circuit; a first discharge circuit configured to discharge the first node to a low level upon transition of the input signal from the low level to the high level; a second discharge circuit configured to discharge the second node to the low level upon transition of the input signal from the high level to the low level; a latch circuit connected to the first node and the second node, an output of the latch circuit being reset to the low level by the transition of the first node to the low level, and the output of the latch circuit being set to the high level by the transition of the second node to the low level to control the precharge circuit; and an output circuit configured to receive the output of the latch circuit, wherein the output circuit further receives a signal from the first node and an inversion signal from the second node, or an inversion signal from the first node and a signal from the second node.