High output swing high voltage tolerant bus driver
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United States of America Patent
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Oct 29, 2019
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N/A
app pub date -
Oct 24, 2018
filing date -
Oct 24, 2018
priority date (Note) -
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Abstract
A driver circuit includes two pull-up portions coupled respectively between VDD and first and second driver output nodes and two pull-down sections coupled respectively between ground and third and fourth driver output nodes. The driver circuit is configurable as an RS485 driver or a CAN driver. The active diodes in the pull-up sections are turned off when necessary to prevent unwanted reverse currents between the first and second output nodes and VDD. The active diodes in the pull-down sections are turned off when necessary to prevent unwanted reverse current between ground and the third and fourth output nodes.
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