Patent ID: 8456216
Filing Date: 2013-06-04
Classification: H03K

Abstract:
1. A level shifter comprising: a driving signal generating unit configured to generate a pull-up signal and a pull-down signal in response to an input signal, wherein the input signal swings between a first high level and a first low level; a driving unit configured to generate an output signal swinging between a second high level and a second low level in response to the pull-up signal and the pull-down signal; and a current path forming unit configured to form a current path between the pull-up signal and the pull-down signal in response to the pull-up signal and the pull-down signal, wherein the current path forming unit comprises a first diode configured transistor to be turned on to transfer the level of the pull-up signal to the pull-down signal when the pull-up signal is driven to the first low level, and a second diode configured transistor to be turned on to transfer the level of the pull-down signal to the pull-up signal when the pull-down signal is driven to the first high level.