LM193/LM293 is a low voltage comparator. It has a wide operating voltage range and can be powered by a single or dual supply. It has a low input bias current and a low output saturation voltage. The output is compatible with TTL, DTL, ECL, MOS, and CMOS logic levels.
The LM193, LM293 and LM393 are low‑power dual voltage comparators offered by STMicroelectronics. They operate from a single supply of +2 V to +36 V (or dual supplies of ±1 V to ±18 V) and feature very low supply current (0.4 mA typical) and low input bias (25 nA typ.). The devices provide TTL, DTL, ECL, MOS and CMOS compatible outputs and include ground in the input common‑mode range.
Typical applications shown include basic comparator circuits, TTL and CMOS drivers, low‑frequency op‑amp configurations, and transducer amplifiers. Package options cover DIP‑8, SO‑8, TSSOP‑8 and Mini‑SO‑8 with detailed mechanical dimensions. The document also lists absolute maximum ratings, electrical characteristics, and ordering information.
| Typical supply current | 0.4 mA at +5 V |
|---|---|
| Input bias current | 25 nA typ. |
| Input offset voltage | 1 mV typ. |
| Output saturation voltage | 250 mV typ. at 4 mA load |
| Input common‑mode voltage range | Includes ground (0 V to VCC‑1.5 V) |
| Differential input voltage range | Equal to the supply voltage |
| Operating temperature range (LM193) | -55 °C to +125 °C |
| Operating temperature range (LM293) | -40 °C to +125 °C |
| Operating temperature range (LM393) | 0 °C to +70 °C |
The typical supply current is 0.4 mA when powered at +5 V.
The input offset voltage is typically 1 mV.
The LM193 can operate from –55 °C up to +125 °C.
The low‑level output saturation voltage is about 250 mV typical at a 4 mA load.