inv 1 c by connecting the input side terminal and the output terminal sgoutb of the transfer gate tg 1 c the circuit in fig1 is different from the circuit in fig1 on this point the connection of the input side terminal and the output terminal sgoutb of the transfer gate tg 1 c provides the reverse delay circuits 11 b to 13 b and has fewer inverters in addition the embodiment is not to be considered limited to the above mentioned embodiments it is obvious that various improvements and changes may be made without departing from the scope for example in the first to fifth embodiments transfer gates are used as elements to delay input signals however in the first to fifth embodiments delay elements that are not transfer gates but inverters are combined and can be used in addition in the first to fifth embodiments though transfer gates are used as elements that synthesize input signals and delayed signals a circuit that can change impedance can be used for example in the first to fifth embodiments a circuit that connects resistive elements in series or in parallel and changes impedance by taking out signals from the center tap of the resistive element can be also used in addition in the first to fifth embodiments a circuit that can change impedance in the direction of outputting sgoutx x is 1 2 1a 2a and b.