556 Dual Timer IC - 100 Pack

When one 555 isn't enough - consider the 556 which has ... two timer circuits. 

The NE556 dual monolithic timing circuit from PMD Way is a highly stable controller capable of producing accurate time delays or oscillation. In the time delay mode of operation, the time is precisely controlled by one external resistor and capacitor.

For a stable operation as an oscillator, the free running frequency and the duty cycle are both accurately controlled with two external resistors and one capacitor. The circuits may be triggered and reset on falling waveforms, and the output structure can source or sink up to 200 mA.