The NJM556 dual monolithic Timing circuit is a highly stable controller capable of producing accurate time delays or oscillation. In the time delay modedelay time is precisely controlled by only two external parts : a resistor and a capacitor. For operation as an oscillatorboth the free running frequency and the duty cycle are accurately controlled by two external resistors and capacitor. Terminal are provided for triggering and resetting. The circuit will trigger and reset on falling waveforms. The output CAN source or sink up to 200mA or drive TTL circuits. By New Japan Radio Co.,Ltd