NE556, SA556, SE556 DUAL PRECISION TIMERS is a dual precision timer produced by Texas Instruments. It features two independent timing circuits that can be operated in either astable or monostable modes and is interchangeable with Signetics NE556, SA556, and SE556.
The NE556, SA556 and SE556 are dual‑timer ICs that provide two independent timing circuits per package. Each timer can operate in astable or monostable mode and features TTL‑compatible outputs that can sink or source up to 150 mA.
The document lists absolute maximum ratings, recommended operating conditions, electrical characteristics, and application information, and includes a notice about product warranties and critical‑application usage.
| Input voltage (CONT, RESET, THRES, TRIG) | 0 V – VCC |
|---|---|
| Operating temperature range (SA556) | -40 °C – 85 °C |
| Operating temperature range (SE556) | -55 °C – 125 °C |