| 摘要 |
Disclosed are a main amplifier and a semiconductor device employing the main amplifier. The main amplifier is arranged between a plurality of pairs of local input/output lines and a global input/output line. The main amplifier comprises a main amplifier pre-charge unit for pre-charging the main amplifier in response to inputted pre-charge control signals; an input/output sense amplifier enabled by enable signals for sensing a first data signal transmitted from the plurality of pairs of input/output lines of a plurality of memory banks, amplifying the sensed first data signal, and outputting the amplified first data signal as a second data signal of a first potential level; and an input/output driver for pull-down or pull-up driving the global input/output line in response to the second data signal from the input/output sense amplifier. The main amplifier is connected in common to the plurality of pairs of local input/output lines for taking charge of the plurality of memory banks.
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