A compactly integrated random-signal source using chaos multivibrator

A novel random-signal source has been designed and fabricated by using comp elmentary metal-oxide-silicon (CMOS) chaos multivibrator. When the outputs of two multivibrators are summed, a signal with sufficient randomness was o btained. This circuit can be integrated within an area comparable to that o f 2 or 3 units of flip-flop circuits and can be operated with a delay time nearly equal to that of 3 stages of logic gates. These features promise the useful application of this signal source in various novel information-proc essing LSIs.