Product Overview
The LM556CN series dual monolithic timing circuits are a highly stable controller capable of producing accurate time delays or oscillation. The LM556CN is a dual LM555. Timing is provided 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.
Features:
- Replaces Two LM555 Timers
- Operates in Both Astable And Monostable Modes
- High Output Current
- TTL Compatible
- Timing From Microsecond To Hours
- Adjustable Duty Cycle
- Temperature Stability Of 0.005% Per °C
Specifications:
- Dual timer IC (equivalent to two independent 555 timers in one package)
- Wide operating supply voltage range: 4.5 V to 16 V
- Low supply current: ~5 mA typical (at 5 V), up to 30 mA max
- High output drive capability: can source or sink up to 200 mA
- Timing accuracy (monostable): ~0.75% with low drift (50 ppm/°C)
- Astable mode accuracy: ~2.25% with moderate drift (150 ppm/°C)
- Fast switching performance: rise/fall times between 100 ns and 300 ns
- Internal threshold and trigger levels proportional to VCC (~1/3 and 2/3 of supply voltage)
- Wide operating temperature range: 0°C to +70°C
- Low leakage and input currents: threshold current up to 250 nA, trigger current as low as 0.01 µA
- Package: DIP-14
