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    • 111. 发明申请
    • High voltage to low voltage level shifter
    • 高电压至低电平电平转换器
    • US20050040853A1
    • 2005-02-24
    • US10920632
    • 2004-08-18
    • Erik MentzeHerbert HessKevin BuckDavid Cox
    • Erik MentzeHerbert HessKevin BuckDavid Cox
    • H03K19/0185H03K19/0175
    • H03K19/018521
    • A shifter circuit comprises, in one embodiment, an input voltage divider stage comprising multiple transistors arranged in a transistor stack defining a plurality of intermediate nodes. The transistor stack is connected between an input signal and ground and has at least one output. An inverting buffer stage is connected to a supply voltage and coupled to the input voltage divider's output. The inverting buffer stage is configured to provide an inverted output signal. Means are provided for stepping up the inverted output signal, receiving a stepped up output signal and providing a level-shifted output signal at a voltage level lower than that of the input signal.
    • 在一个实施例中,移位器电路包括输入分压器级,其包括布置在限定多个中间节点的晶体管堆叠中的多个晶体管。 晶体管堆叠连接在输入信号和地之间,并具有至少一个输出。 反相缓冲级连接到电源电压并耦合到输入分压器的输出。 反相缓冲级被配置为提供反相输出信号。 提供了用于加强反相输出信号,接收升压输出信号并提供电压电平低于输入信号电压电平的电平移位输出信号的装置。