The frequency divider composed of R-S triggers (SN7442)

Published:2011/6/26 20:45:00 Author:Borg | Keyword: frequency divider, R-S triggers | From:SeekIC

In the figure is the frequency divider composed of R-S triggers. The circuit can work in a wide frequency range and input pulse width. Compared with the standard R-S multi-resonance oscillator, the circuit must be stable after being improved. The integrator R1C1 and R2C2 form a feedback net, the integrating constant is selected according to the following formula: T<0.6RC, of which T is the width of the input pulse width. According to the above requirement, the NANDs of G1 and G2 won't output low LEVs at the same time. The working frequency of the circuit could be several MHz.



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