| 摘要 |
PROBLEM TO BE SOLVED: To reduce impedance errors caused by parasitic resistance between an output terminal and unit buffers. SOLUTION: A semiconductor device includes: an output terminal DQ; unit buffers 111-11n; and a plurality of output wiring paths for respectively connecting the unit buffers 111-11n with the output terminal DQ. Each output wiring path has each individual output wiring part 161P-16nP, 161N-16nN individually assigned to each corresponding unit buffer. The unit buffers corresponding to the output wiring paths are connected to the output terminal DQ without via common output wiring parts that are common output wiring parts shared by the output wiring paths and have higher resistance value than that of the individual output wiring parts. By this, it suppresses impedance errors caused by parasitic resistance between the output terminal DQ and the unit buffers 111-11n. COPYRIGHT: (C)2011,JPO&INPIT |
