The present invention relates to an odd frequency divider for dividing an arbitrary frequency into an odd number and at the same time obtaining a clock pulse of 50% duty.;A counter that provides a basic waveform, a gate circuit portion that converts the basic waveforms into two waveforms of 80% duty, a D flip-flop that causes the two waveforms to be phase shifted by one-half cycle, Including a NAND gate that synthesizes the waveforms and a flip-flop that divides the output waveform of the NAND gate by half,;Odd division of 50% duty is possible without the use of a crystal oscillator.
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