Method and apparatus for robust mode selection with low power consumption

摘要

A low power method and apparatus for selecting operational modes of a circuit. One circuit according to the teachings of the disclosed method and apparatus includes a first current limiting circuit (117) coupled between a selector terminal (206) and a first voltage bus (200). The first current limiting circuit (117) is adapted to vary a current limit out of the selector terminal (206) in response to a voltage on the selector terminal. The circuit also includes a second current limiting circuit (202) coupled between the selector terminal and a second voltage bus (108). The second current limiting circuit adapted to vary a current limit into the selector terminal (206) in response to the voltage on the selector terminal.