Dual voltage comparator, open-collector outputs. 2V-36V, needs pull-up resistor.
| Pin | Name | Function | Type |
|---|---|---|---|
| 1 | OUT1 | Comparator 1 output (open-collector) | I/O |
| 2 | IN1- | Comparator 1 inverting input | ADC |
| 3 | IN1+ | Comparator 1 non-inverting input | ADC |
| 4 | GND | Ground | GND |
| 5 | IN2+ | Comparator 2 non-inverting input | ADC |
| 6 | IN2- | Comparator 2 inverting input | ADC |
| 7 | OUT2 | Comparator 2 output (open-collector) | I/O |
| 8 | VCC | Positive supply | PWR |
The LM393 is a dual voltage comparator with open-collector outputs that work from 2V to 36V single or dual supply. Used to compare analog voltages and produce a digital output. Pull-up resistor required on output.