Patent ID: 7352548

Claim:
A composite integrated semiconductor device being connected to a plurality of inputting terminals of a semiconductor device at front of the input terminals, comprising: a plurality of inputting devices receiving an input electrical signal; a plurality of outputting devices transmitting an output electrical signal to the plurality of inputting terminals of a semiconductor device; a plurality of input surge/noise absorbing circuits to absorb surge or noise of the input electrical signal, each of the input surge/noise absorbing circuits being connected between respective ones of the inputting devices and corresponding outputting devices, each of the input surge/noise absorbing circuits including a first diode being connected between a power source line and the inputting device and a second diode being connected between the power source line and a ground, respectively; and a plurality of attenuating/level-shifting circuits to attenuate the input electrical signal, each of the attenuating circuits being connected between respective ones of the inputting devices and corresponding outputting devices, wherein each inputting device, input surge/noise absorbing circuit, attenuating/level-shifting circuit, and outputting device comprise an integrated circuit, and wherein the integrated circuits are arranged in a line at each of the inputting terminals and the integrated circuits are formed in a semiconductor substrate.