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Maxim Integrated
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DS1721
 
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DS1721

2-Wire Digital Thermometer and Thermostat

Maxim Integrated

The DS1721 2-Wire Digital Thermometer and Thermostat provides 12-bit temperature readings, which indicate the temperature of the device. Thermostatic settings and temperature readings are all communicated to/from the DS1721 over a simple 2-wire serial interface. No additional components are required; the device is truly a “temperature-to-digital” converter. The DS1721 has three address bits that allow a user to multidrop up to eight sensors along the 2-wire bus, greatly simplifying the bussing of distributed temperature sensing networks. The thermal alarm output, TOUT, is active when the temperature of the device exceeds a user-defined temperature TH. The output remains active until the temperature is equal to or below the user-defined temperature TL, allowing for any hysteresis necessary. The active state of TOUT is configurable by the user.

Datasheets:
Specifications
  • Accuracy - Highest (Lowest):±1°C (±2°C)
  • Features:One-Shot, Output Switch, Programmable Limit, Programmable Resolution, Standby Mode
  • Mounting Type:Surface Mount
  • Operating Temperature:-55°C ~ 125°C
  • Output Type:I²C
  • Resolution:11 b
  • Sensing Temperature - Local:-55°C ~ 125°C
  • Sensor Type:Digital, Local
  • Supplier Device Package:8-uMAX ~ 8-SOIC
  • Test Condition:-10°C ~ 85°C (-55°C ~ 125°C)
  • Voltage - Supply:2.7V ~ 5.5V
Parts

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DS1721U+T&RDS1721U+T&RSENSOR DIGITAL -55C-125C 8UMAX Digital, Local-55°C ~ 125°C-I²C8-TSSOP, 8-MSOP (0.118", 3.00mm Width)RoHS
DS1721S+T&RDS1721S+T&RSENSOR DIGITAL -55C-125C 8SOIC Digital, Local-55°C ~ 125°C-I²C8-SOIC (0.154", 3.90mm Width)RoHS
DS1721U+DS1721U+SENSOR DIGITAL -55C-125C 8UMAX Digital, Local-55°C ~ 125°C-I²C8-TSSOP, 8-MSOP (0.118", 3.00mm Width)RoHS
DS1721S+DS1721S+SENSOR DIGITAL -55C-125C 8SOIC Digital, Local-55°C ~ 125°C-I²C8-SOIC (0.154", 3.90mm Width)RoHS

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