DS18B20

This is the latest DS18B20 1-Wire digital temperature sensor from Maxim IC. Reports degrees C with 9 to 12-bit precision, -55C to 125C (+/-0.5C). 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. This is a wonderful part that is the corner stone of many data-logging and temperature control projects.


 * Unique 1-Wire® interface requires only one port pin for communication
 * 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
 * Alarm search command identifies and addresses devices whose temperature is outside of programmed limits (temperature alarm condition)
 * Applications include thermostatic controls, industrial systems, consumer products, thermometers, or any thermally sensitive system