| 摘要 |
PROBLEM TO BE SOLVED: To provide a data input circuit for a semiconductor storage device in which a through current is suppressed by preventing completely operation of a write-amplifier driving a data bus during pre-charge of a data bus. SOLUTION: A data bus pre-charge signal DBPCB is inputted to a write- amplifier driving circuit 2, an output of a write-amplifier 4 is made to be in a high impedance state by this data bus pre-charge signal DBPCV. Thereby, it can be prevented that a through current is generated from a pre-charge transistor 6 through the write-amplifier 4 during pre-charge of data buses DB, *DB.
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