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. Unique 1-Wire interface requires only one port pin for communication . 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 . Zero standby power required . Measures temperatures from -55°C to +125°C. Fahrenheit equivalent is -67°F to +257°F . ±0.5°C accuracy from -10°C to +85°C . Thermometer resolution is programmable from 9 to 12 bits . Converts 12-bit temperature to digital word in 750 ms (max.) . User-definable, nonvolatile temperature alarm settings DS18B20Z . Alarm search command identifies and 8-Pin SOIC (150 mil) addresses devices whose temperature is outside of programmed limits (temperature PIN DEscriptION alarm condition) . Applications include thermostatic controls, DQ - Data In/Out industrial systems, consumer products, VDD - Power Supply Voltage t