| 摘要 |
A semiconductor memory device includes an I/O line, a first sense amplifier connected to the first I/O line to amplify a signal applied on the first I/O line in response to a first control signal, a second sense amplifier for amplifying an output signal of the first sense amplifier in response to a second control signal, and a disabling unit for disabling the first control signal in response to an output signal of the second sense amplifier.
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