The CD4047B is capable of working in the monostable or astable mode. It takes an external capacitor (between pins 1 and 3) and also an external resistor (between pins 3 and 2 ) to ascertain the output pulse width at the monostable mode, and also the output frequency at the astable mode. Astable performance is enabled with a high degree on the astable input or very low level over the astable input. The output frequency (in 50 % duty cycle) in Q and Q outputs is set by the timing elements. A frequency double that of Q can be obtained in the Oscillator Output; a 50 % duty cycle isn 't guaranteed. Monostable performance is obtained when the device is triggered by LOW-to-HIGH transition + trigger input or HIGH-to-LOW transition in - trigger input. The apparatus may be retriggered by employing a clickable LOW-to-HIGH transition into both + trigger and retrigger input signal.