DS1820 Wire TM Digital Thermometer

Features:

• Unique 1–WireTM 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

• Zero standby power required

• Measures temperatures from –55°C to +125°C in 0.5°C increments. Fahrenheit equivalent is –67°F to +257°F in 0.9°F increments

• Temperature is read as a 9–bit digital value.

• Converts temperature to digital word in 200 ms (typ.)

• User–definable, nonvolatile temperature 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.