LM339 is a voltage comparator produced by Estek company. Its features are wide voltage range, low current consumption, low input bias current and low input offset voltage. It can be powered by a single power supply or a split power supply.
The LM339 is a quad comparator IC that contains four independent voltage comparators. It is designed to operate from a single power supply over a wide voltage range and can also be used with split supplies. The device features low supply current drain independent of supply voltage, low input bias and offset currents, and open‑collector outputs suitable for wired‑AND connections.
The datasheet lists absolute maximum ratings, detailed electrical characteristics, typical performance graphs, example comparator circuits with hysteresis, and ordering details for SOP‑14 and DIP‑14 packages. It also includes pin‑out diagrams and recommended operating conditions.
| Supply Voltage (single) | 36 V |
|---|---|
| Supply Voltage (split) | ±18 V |
| Short‑Circuit Duration (output) | 100 ms |
The LM339 can operate from a single supply up to 36 V.
When using split supplies, the LM339 can handle ±18 V.
The output short‑circuit duration is specified as 100 ms.