The present invention discloses an address buffer and a semiconductor
memory device having the address buffer. The address buffer comprises a
first buffer for latching a signal in response to a first control signal
in a normal operation mode in the semiconductor memory device and
generating a buffered signal by buffering the latched signal in response
to a second control signal, and a second buffer for maintaining a
mode-setting signal in a reset status in the normal operation mode and for
outputting the mode-setting signal by using the latched signal in response
to the first control signal and a mode-setting command in a mode-setting
operation mode. Accordingly, the mode-setting signal is generated only in
the mode-setting operation mode, thereby reducing undesirable current
consumption.
