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CMOS interface for coupling a low voltage integrated circuit with devices powered at a higher supply voltage
CMOS interface for coupling a low voltage integrated circuit with devices powered at a higher supply voltage
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机译:CMOS接口,用于将低压集成电路与以较高电源电压供电的设备耦合
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摘要
An interface circuit for coupling the output of an integrated circuit designed for a relatively low supply voltage to a circuit designed to operate at a higher supply voltage employs a cascoded architecture and makes use of two purposely derived reference voltages. The circuit comprises a level rising stage, an output buffer stage (off chip driver stage), an overdrive stage for the pull-up device of the output buffer and a drain follower stage, the pull-up element of which is driven by a second output node of the level rising stage and the pull- down element of which is driven by the inverted input data stream.
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