A device for preventing a process collision based on plural of input signals includes an input block for receiving a first and a second input signals to thereby generates a first and a second process request signals, a collision controller for controlling the process collision in accordance with a predetermined priority, and a signal processing block for outputting a first process signal in response to the first process request signal and outputting a second process signal in response to the second process request signals. Herein, the process collision is caused one of cases when the second input signal is inputted at an activation sector of the first process signal of the first input signal, when the first input signal is inputted at an activation sector of the second process signal of the second input signal, and when the first and the second inputs are inputted concurrently.