| 摘要 |
A level shift circuit which realizes a high-speed and power-saved operation particularly when the input voltage is at a low level is provided. The level shift circuit of the present invention comprises a first gate voltage control circuit controlled by a inverted signal of an input signal, which is inserted between a gate of a third transistor and a second output terminal; a second gate voltage control circuit controlled by the input signal, which is inserted between a gate of a fourth transistor and a first output terminal; a first transistor; and a second transistor. When the input signal shifts from "H" to "L", the first transistor turns OFF, the third transistor is turned ON by the first gate voltage control circuit, and then a voltage of the first output terminal rises. The second transistor turns ON, the fourth transistor is turned OFF by the second gate voltage control circuit, and then the voltage of the second output terminal goes down.
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