Standard Timer Dual 14-Pin SOIC N Rail

The LM556 Dual timing circuit is a highly stable controller capable of producing accurate time delays or oscillation. The 556 is a dual 555. Timing is provided by an external resistor and capacitor for each timing function. The two timers operate independently of each other sharing only VCC and ground. The circuits may be triggered and reset on falling waveforms. The output structures may sink or source 200mA.  

Direct replacement for SE556/NE556

Timing from microseconds through hours

Operates in both astable and monostable modes

Replaces two 555 timers

Adjustable duty cycle

Output can source or sink 200mA

Output and supply TTL compatible

Temperature stability better than 0.005% per °C

Normally on and normally off output