The LM139, LM239, LM339 are low-power quad voltage comparators produced by ST company. They have wide single supply voltage range, low input bias current, low input offset current, low input offset voltage, input common-mode voltage range including ground, low output saturation voltage, differential input voltage range.
This document describes the LM139, LM239, and LM339 families of low-power quad voltage comparators. These devices consist of four independent precision-voltage comparators designed to operate from a wide range of single or split power supplies. A unique characteristic is that the input common-mode voltage range includes ground even when operated from a single supply voltage.
| Supply voltage range | +2 to +36 V (single) or +1 V to +18 V (dual) |
|---|---|
| Supply current (typical) | 1.1 mA |
| Input bias current (typical) | 25 nA |
| Input offset voltage (typical) | 1 mV |
| Output saturation voltage (typical) | 250 mV |
| Operating temperature range (LM139) | -55 to +125 °C |
| Operating temperature range (LM339) | 0 to +70 °C |
The typical supply current is 1.1 mA and is independent of the supply voltage.
Yes, the input common-mode voltage range includes ground even when operated from a single supply voltage.