DS18B20 Datasheet – Digital Thermometer

Part number : DS18B20

Functions : Programmable Resolution 1-Wire Digital Thermometer

Package :TO-92, SOIC 8 Pin type

Manufactures : Dallas Semiconductor, Maxim IC


DS18B20 Digital Thermometer


The Digital Thermometer provides 9 to 12-bit (configurable) temperature readings which indicate the temperature of the device.

Information is sent to/from the DS18B20 over a 1-Wire interface, so that only one wire (and ground) needs to be connected from a central microprocessor to a DS18B20. Power for reading, writing, and performing temperature conversions can be derived from the data line itself with no need for an external power source.


DS18B20 pinout datasheet arduino

GND – Ground
DQ – Data In/Out
VDD – Power Supply Voltage
NC – No Connect


1. Unique 1-Wire interface requires only one port pin for communication
2. Multidrop capability simplifies distributed temperature sensing applications
3. Requires no external components
4. Can be powered from data line. Power supply range is 3.0V to 5.5V
5. Zero standby power required

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Reference site

1. http://www.hobbytronics.co.uk/

2. https://create.arduino.cc/projecthub/

DS18B20 Datasheet