Input buffer having double path

PURPOSE: An input buffer having a dual path is provided, which improves an input signal processing speed by using two input buffers having different input characteristics each other. CONSTITUTION: The first input buffer(201) transfers a logic high signal of an external input signal, and the second input buffer(202) transfers a logic low signal of the external input signal. And a control signal generation circuit(203) generates a control signal(BUFON) to control a transfer path of the first and the second input buffer by receiving output signals(REG,FEGB) of the first and the second input buffer. A latch circuit part(204) generates an internal operation signal of a semiconductor device by receiving signals(RSIG,FSIGB) in charge of an internal operation of the semiconductor device from the first and the second input buffer.