The DS18B20 is a temperature sensor manufactured by Dallas Semiconductor (Maxim). It features a unique 1-Wire interface that requires only one port for communication. Each device has a unique 64-bit serial code stored in built-in ROM memory.
- No external components required.
- Can be powered from the data line with a voltage from 3V to 5.5V.
- Measures temperatures from -55°C to +125°C.
For more details, the datasheet and application notes are available on the Maxim website.