Texas Instruments
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Dual comparator with open-collector outputs — needs a pull-up. Threshold detection, zero-crossing, simple sensor triggers.
| Part number | LM393 |
|---|---|
| Manufacturer | Texas Instruments |
| Category | Integrated Circuits › Op-Amps & Comparators |
| Package | DIP-8 |
| Pins | 8 |
LM393 pinout
| Pin | Name | Type | Description |
|---|---|---|---|
| 1 | OUT1 | oc | Comparator 1 output, open collector |
| 2 | IN1- | input | Comparator 1 inverting |
| 3 | IN1+ | input | Comparator 1 non-inverting |
| 4 | GND | ground | Ground |
| 5 | IN2+ | input | Comparator 2 non-inverting |
| 6 | IN2- | input | Comparator 2 inverting |
| 7 | OUT2 | oc | Comparator 2 output, open collector |
| 8 | VCC | power | Supply, 2–36V |
Schematic symbol and footprint
Schematic symbol
Footprint: DIP-8 — to scale, pad 1 in yellow (mm). Check against the datasheet before ordering PCBs.