Patent ID: 8803585
Filing Date: 2014-08-12
Classification: H03K

Abstract:
1. A dual path level shifter comprising: a dual path level shifter input terminal; a dual path level shifter output terminal; a first voltage-to-current converter; a second voltage-to-current converter; a third voltage-to-current converter; a first current-to-voltage converter; and a second current-to-voltage converter, wherein: in a first condition, during operation, an input signal having an input signal level swinging between an input signal low voltage level and an input signal high voltage level is routed from the dual path level shifter input terminal to an input of the first voltage-to-current-converter, from an output of the first voltage-to-current-converter to an input of the second current-to-voltage converter, from an output of the second current-to-voltage converter to an input of the third voltage-to-current converter, from an output of the third voltage-to-current converter to an input of the first current-to-voltage converter and from the output of the first current-to-voltage converter to the dual path level shifter output terminal; in a second condition, during operation, the input signal is routed from the dual path level shifter input terminal to an input of the second voltage-to-current converter, from an output of the second voltage-to-current converter to the input of the first current-to-voltage converter and from the output of first current-to-voltage converter to the dual path level shifter output terminal; during operation in the second condition, no current is flowing through an electrical path defined by the input signal routing of the first condition; the output signal is a replicate of the input signal swinging between an output signal low voltage level and an output signal high voltage level, so that the output signal low/high level is a shifted version of the input signal low/high level; and the output signal during operation in the first condition is different from the output signal during operation in the second condition.