| 摘要 |
In a semiconductor integrated system comprising an internal circuit (6) for operating in an internal voltage having a low voltage level and for producing an output control signal and an output signal having the low voltage level, a voltage level-selecting circuit (23) selects one of high and low level output terminals in response to the output control signal to supply the output signal to the one of the high and low level output terminals. A voltage level shifter (7) shifts the output signal to produce a shifted output signal having a high voltage level which is higher than the low voltage level.
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