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


  • feature
    Available in 8-Pin SO (150 mils), 8-Pin u00b5SOP, and
  • feature
    Each Device Has a Unique 64-Bit Serial Code Stored in On-Board ROM
  • feature
    Flexible User-Definable Nonvolatile (NV) Alarm Settings with Alarm Search Command Identifies Devices with Temperatures Outside Programmed Limits
  • feature
    Measures Temperatures from -55u00b0C to +125u00b0C (-67u00b0F to +257u00b0F)
  • feature
    No External Components Required
  • feature
    Parasitic Power Mode Requires Only 2 Pins for Operation (DQ and GND)
  • feature
    Programmable Resolution from 9 Bits to 12 Bits
  • feature
    Reduce Component Count with Integrated Temperature Sensor and EEPROM
  • feature
    Simplifies Distributed Temperature-Sensing Applications with Multidrop Capability
  • feature
    Unique 1-Wireu00ae Interface Requires Only One Port Pin for Communication
  • feature
    u00b10.5u00b0C Accuracy from -10u00b0C to +85u00b0C


The DS18B20 digital thermometer provides 9-bit to 12-bit Celsius temperature measurements and has an alarm function with nonvolatile user-programmable upper and lower trigger points. The DS18B20 communicates over a 1-Wire bus that by definition requires only one data line (and ground) for communication with a central micro- processor. In addition, the DS18B20 can derive power directly from the data line (“parasite power”), eliminating the need for an external power supply. Each DS18B20 has a unique 64-bit serial code, which allows multiple DS18B20s to function on the same 1-Wire bus. Thus, it is simple to use one microprocessor to control many DS18B20s 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.


IC Output Type:
Open Drain
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:
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

Avnet Asia

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

Avnet Asia product

Future Electronics

Programmable Resolution 1-Wire Digital Thermometer