Output driving circuit for maintaining I/O signal duty ratios
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United States of America Patent
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Aug 23, 2005
Grant Date -
May 6, 2004
app pub date -
Oct 17, 2003
filing date -
Nov 4, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Output driving circuit including at least one or more than one level shifter for receiving an input signal to be provided to an outside of an integrated circuit and shifting a voltage level of the input signal to a voltage level required at the outside of the integrated circuit while maintaining a duty ratio of the input signal constant, and an output driving unit for forwarding the input signal to the outside of the integrated circuit under the control of an output enable signal, thereby permitting application to the integrated circuit operative at a high speed, readily.
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