Multimode data buffer and method for controlling propagation delay time
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United States of America Patent
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Nov 16, 2004
Grant Date -
Nov 13, 2003
app pub date -
Oct 23, 2002
filing date -
May 10, 2002
priority date (Note) -
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Abstract
A data buffer, such as a data strobe input buffer or a data input buffer, which may operate in multiple modes, such as a single mode (SM) and a dual mode (DM) and where the mode is selected by providing a signal, such as an external signal such as an address signal or an external command signal. A data buffer which can be used for a SM/DM dual-use and can improve a data setup/hold margin. A semiconductor memory device including one or more of the data buffers described above. A method for controlling propagation delay times which can improve a data setup/hold margin in a SM/DM dual-use data buffer.
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