MULTIISTEP DIVISION CIRCUIT

摘要

PURPOSE:To realize the low power consumption as well as a higher degree of integration by having the different constitutions between the 1/2-division circuit used to the first step and that used to the subsequent steps in case the multi-step connection is secured for the 1/2-division circuit consisting of the gate using I<2>L. CONSTITUTION:The T-type flip-flop circuit is used for 1st 1/2-division circuit 1 used to the first step, and the circuit comprising four I<2>L gates G11-G14 is used for the 1/2-division circuits used to the subsequent steps respectively. The clock pulse of 2nd 1/2-division circuit 2 is not drawn out of gate G3 and G4 forming the output ratch circuit of circuit 1 but out of gate G1 and G2. As a result, the duty ratio is down to 50% or less (about 25% in this example) for the input part pulse of gate G1 which delivers the clock pulse.