HOME DS18B20 – 1-Wire Digital Thermometer

Basic info / Features:

● Unique 1-Wire® Interface Requires Only One Port Pin for Communication
● Reduce Component Count with Integrated Temperature Sensor and EEPROM
   • Measures Temperatures from -55°C to +125°C (-67°F to +257°F)
   • ±0.5°C Accuracy from -10°C to +85°C
   • Programmable Resolution from 9 Bits to 12 Bits
   • No External Components Required
● Parasitic Power Mode Requires Only 2 Pins for Operation (DQ and GND)
● Simplifies Distributed Temperature-Sensing Applications with Multidrop Capability
   • Each Device Has a Unique 64-Bit Serial Code Stored in On-Board ROM
● Flexible User-Definable Nonvolatile (NV) Alarm Settings with Alarm Search Command Identifies Devices with Temperatures Outside Programmed Limits
● Available in 8-Pin SO (150 mils), 8-Pin μSOP, and 3-Pin TO-92 Package

Datasheet: DS18B20


  1. 1 – Wire bus
  2. Dallas Temperature Library





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