A semiconductor device is disclosed which increases the data transfer rate in transferring data output from an input/output sense amplifier via a global data bus line by reducing {HEAD ~ the swing width} of {TAIL ~ the data} placed on the global data bus line 
A semiconductor device is disclosed which increases the data transfer rate in transferring data output from an input / output sense amplifier via a global data bus line by reducing { HEAD ~ the swing width } of { TAIL ~ the data } placed on the global data bus line
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