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Series Information for DS18B20-PAR+T&R - Maxim Integrated


  • feature
    Alarm search command identifies and addresses devices whose temperature is outside of programmed limits (temperature alarm condition)
  • feature
    Converts temperature to 12-bit digital word in 750 ms (max.)
  • feature
    Derives power from data line (u201cparasite poweru201d)u2014does not need a local power supply
  • feature
    Ideal for use in remote sensing applications
  • feature
    Measures temperatures from u201355u00b0C to +100u00b0C (u201367u00b0F to +212u00b0F)
  • feature
    Multi-drop capability simplifies distributed temperature sensing applications
  • feature
    Requires no external components
  • feature
    Software compatible with the DS1822-PAR
  • feature
    Thermometer resolution is user-selectable from 9 to 12 bits
  • feature
    Unique 1-Wireu00ae interface requires only one port pin for communication
  • feature
    Useru2013definable non-volatile temperature alarm settings
  • feature
    u00b10.5u00b0C accuracy from u201310u00b0C to +85u00b0C


The DS18B20-PAR digital thermometer provides 9 to 12–bit centigrade temperature measurements and has an alarm function with nonvolatile user-programmable upper and lower trigger points. The DS18B20-PAR does not need an external power supply because it derives power directly from the data line (“parasite power”). The DS18B20-PAR communicates over a 1-Wire bus, which by definition requires only one data line (and ground) for communication with a central microprocessor. It has an operating temperature range of –55°C to +100°C and is accurate to ±0.5°C over a range of –10°C to +85°C. Each DS18B20-PAR has a unique 64-bit identification code, which allows multiple DS18B20-PARs to function on the same 1–wire bus; thus, it is simple to use one microprocessor to control many DS18B20- PARs distributed over a large area. Applications that can benefit from this feature include HVAC environmental controls, temperature monitoring systems inside buildings, equipment or machinery, and process monitoring and control systems. DS18B20-PAR 1-Wire Parasite-Power Digital Thermometer


IC Output Type:
Sensing Accuracy Range:
± 0.5°C
Sensing Temperature Min:
Sensing Temperature Max:
Sensor Case Style:
No. of Pins:
Supply Voltage Min:
Supply Voltage Max:
Product Range:
Automotive Qualification Standard:
RoHS Phthalates Compliant:
To Be Advised
MSL 1 - Unlimited
No SVHC (15-Jan-2018)

Alternate Descriptions

Avnet America

Temp Sensor Digital Serial (1-Wire) 3-Pin TO-92 T/R

Avnet America product

Avnet Europe

Temp Sensor Digital Serial (1-Wire) 3-Pin TO-92 T/R

Avnet Europe product

Future Electronics

1-Wire Parasite-Power Digital Thermometer