Level shifters for IO interfaces
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United States of America Patent
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Dec 27, 2016
Grant Date -
Aug 29, 2013
app pub date -
Apr 9, 2013
filing date -
Aug 19, 2010
priority date (Note) -
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status (Latency Note)
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Abstract
An integrated circuit which includes a pre-driver configured to receive a first high supply voltage and to generate an input signal and at least one post-driver configured to receive at least one second high supply voltage and to receive the input signal. The at least one post-driver includes an input node configured to receive the input signal and an output node configured to output an output signal. The at least one post-driver further includes a pull-up transistor configured to be in a conductive state during an entire period of operation, and a pull-down transistor. The at least one post-driver further includes at least one diode-connected device coupled between the pull-down transistor and the output node. Each post-driver of the at least one post-driver is configured to supply the output signal having a second voltage level corresponding to a high logic level which is higher than an input voltage level.
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