NE555

The NE555 is a highly stable timer IC that can generate precise time delays, oscillations, and pulses. Introduced in the 1970s, it’s still widely used in timers, pulse generators, PWM controllers, LED flashers, sound generators, and more.

It’s so popular because it’s robust, inexpensive, and simple to use.

📊 Key Features & Specifications
Parameter Specification
Type 8‑pin Timer IC
Operating Voltage (Vcc) 4.5 V – 15 V (typical)
Supply Current ~3 mA (typ)
Timing Range Microseconds to hours (depending on external R & C)
Output Current (sink/source) 200 mA max
Output Voltage Swing Vss to Vcc − 1.5 V
Temperature Range 0 °C – 70 °C (commercial)
Package Types DIP‑8, SOIC‑8, and other surface mount versions
Accuracy ±1 % typical (timing depends on R & C)
Operating Modes Astable (oscillator), Monostable (one-shot), Bistable (flip-flop)