The odd frequency divider counter of the symmetric output waveform(SN7474 and SN74163)

Published:2011/6/26 20:25:00 Author:Borg | Keyword: frequency divider, symmetric output waveform | From:SeekIC

In the figure is the odd frequency divider counter of the symmetric output waveform(SN7474 and SN74163). Sometimes, we need to divide the clock pulse at odd times, and the duty cycle is 50%. Under this condition, an ordinary counter just needs 2 triggers and several gate circuits, see as the figure. When the 20-bit of the counter is logic 1 , meanwhile,21 and 22-bit output 0 logic, the B point is logic 0 ; when the 22-bit of the counter is 1 , the logic of A is 0 .



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