| 摘要 |
A stage of both input and output configurable for operation with low and high voltages, comprises: first (M1), second (M2) and third (M3) transistors, each having first and second terminals and a control terminal, the first and second terminals and control terminal of the first transistor (M1) being respectively connected to a first terminal of a voltage supply, the first terminal of the second transistor (M2), and a drive circuit means, the second terminal and control terminal of the second transistor (M2) being respectively connected to a circuit node (A), forming an input/output terminal of the stage (1), and to the drive circuit means, the first and second terminals and control terminal of the third transistor (M3) being respectively connected to a second terminal of the voltage supply, the circuit node (A), and the drive circuit means; at least one diode (D2) connected between the first and the second terminal of the second transistor (M2); and an input circuit (3) having a first input terminal connected to the circuit node (A), a second input terminal connected to a reference voltage (Vref3), and at least one output terminal forming an output terminal of the stage (I).
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