| 摘要 |
<p>PURPOSE: A semiconductor device is provided to sufficiently secure the data valued window of data outputted through a data output pad by improving an ISI(Inter Symbol interference) phenomenon to increase a jitter of data. CONSTITUTION: A main driving unit(410) receives output data and drives the output data with a data output pad. A pre-emphasis data generating unit compares the output data with delay data obtained by delaying the output data with one data section, delays the comparison result with one data section, and outputs the delayed data as pre-emphasis data. A pre-emphasis driving unit(430) receives the pre-emphasis data and drives the pre-emphasis data with the data output pad. [Reference numerals] (432) First logic level sensing unit; (434,444) Pull up pre-emphasis data generating unit; (442) Second logic level sensing unit</p> |
