The NE556 is a dual monolithic timing circuit that is highly stable and capable of producing accurate time delays or oscillation. It has features such as low turn off time, maximum operating frequency greater than 500kHz, timing from microseconds to hours, operates in both astable and monostable modes, high output current can source or sink 200mA, adjustable duty cycle, and TTL compatibility.
The NE556, SA556 and SE556 are general‑purpose dual bipolar timers offering low turn‑off time, high output current up to 200 mA, and operation from microseconds to hours. They can function in both astable and monostable modes and are TTL compatible.
The document provides pin connections, block and schematic diagrams, absolute maximum ratings, electrical characteristics, mechanical data for DIP‑14 and SO‑14 packages, and typical application circuits such as oscillators and tone‑burst generators.
| Maximum Operating Frequency | >500 kHz |
|---|---|
| Operating Temperature Range (NE556) | 0 °C to 70 °C |
| Timing Range | Microseconds to hours |
The SA556 is rated for –40 °C to 105 °C.
They can operate at frequencies greater than 500 kHz.