DS18B20 is 1-Wire digital temperature sensor from Maxim IC. Reports degrees in Celsius with 9 to 12-bit precision, from -55 to 125 (+/-0.5). Each sensor has a unique 64-Bit Serial number etched into it - allows for a huge number of sensors to be used on one data bus.

    Unique 1-Wire® interface requires only one port pin for communication
    Alarm search command identifies and addresses devices whose temperature is outside of programmed limits (temperature alarm condition

    Each device has a unique 64-bit serial code stored in an onboard ROM

    Multidrop capability simplifies distributed temperature sensing applications

    Requires no external components

    Can be powered from data line.

    Power supply range is 3.0V to 5.5V

    Measures temperatures from –55°C to +125°C (–67°F to +257°F)±0.5°C accuracy from –10°C to +85°C

    Thermometer resolution is user-selectable from 9 to 12 bits

    Converts temperature to 12-bit digital word in 750ms (max.)

    User-definable nonvolatile (NV) alarm settings

    Applications include thermostatic controls, industrial systems, consumer products, thermometers, or any thermally sensitive system

    Sample Project:

    Using Dallas DS18B20 sensor

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    DALLAS DS18B20 TO-92 ONE Wire Thermometer Temperature Sensor

    • Product Code: DS18B20
    • Availability: In Stock
    • $2.50

    Tags: DS18B20 TO-92 ONE Wire Temperature Sensor