| 摘要 |
In a semiconductor large scale integrated circuit including a plurality of input terminals, sequential circuits and output buffer circuits, and further comprising a noise cut circuit, the semiconductor large scale integrated circuit comprises: a sense amplifier connected to an input terminal of the output buffer circuit for detecting a change of signal level at the input terminal and for generating an edge detection signal; a pluse generator connected to the sense amplifier for outputting a trigger pulse signal having a predetermined pulse width based on a plurality of the edge detection signals; and at least one tri-state circuit connected between the input terminal and the sequential circuit, and having a control terminal for receiving the trigger pulse signal for obtaining a high impedance state at an output line of the tri-state circuit during a predetermined period based on the trigger pulse signal input from the pulse generator.
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