Level shifters, memory systems, and level shifting methods

摘要

Level shifters, memory systems, and level shifting methods are described. According to one arrangement, a level shifter includes an input configured to receive an input signal in a first voltage domain, an output configured to output an output signal from the level shifter in a second voltage domain different than the first voltage domain, a plurality of pull-down devices, and wherein one of the pull-down devices is coupled with the input and the output, a plurality of cross-coupled devices coupled with the pull-down devices and configured to provide transitions in the output signal as a result of transitions in the input signal, a plurality of current limiting devices coupled with the cross-coupled devices and configured to limit a flow of current from a source to the cross-coupled devices, and a plurality of dynamic devices configured to selectively provide charging current from the source to the cross-coupled devices.

主权项

1. A level shifter comprising:
an input configured to receive an input signal in a first voltage domain; an output configured to output an output signal from the level shifter in a second voltage domain different than the first voltage domain; a plurality of pull-down devices, and wherein one of the pull-down devices is directly coupled with the input and the output; a plurality of cross-coupled devices coupled with the pull-down devices and configured to provide transitions in the output signal as a result of transitions in the input signal; a plurality of current limiting devices coupled with the cross-coupled devices and configured to limit a flow of current from a source to the cross-coupled devices; and a plurality of dynamic devices configured to selectively provide charging current from the source to the cross-coupled devices.