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Series Information for DS18S20+T&R - Maxim Integrated


  • feature
    9-Bit Resolution
  • feature
    Available in 8-Pin SO (150 mils) and 3-Pin TO-92
  • 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
    Maximize System Accuracy in Broad Range of Thermal Management Applications
  • feature
    Measures Temperatures from -55u00b0C to +125u00b0C (-67u00b0F to +257u00b0F)
  • feature
    No External Components Required
  • feature
    Parasite Power Mode Requires Only 2 Pins for Operation (DQ and GND)
  • 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 DS18S20 digital thermometer provides 9-bit Celsius temperature measurements and has an alarm function with nonvolatile user-programmable upper and lower trig- ger points. The DS18S20 communicates over a 1-Wire bus that by definition requires only one data line (and ground) for communication with a central microprocessor. In addition, the DS18S20 can derive power directly from the data line (“parasite power”), eliminating the need for an external power supply. Each DS18S20 has a unique 64-bit serial code, which allows multiple DS18S20s to function on the same 1-Wire bus. Thus, it is simple to use one microprocessor to control many DS18S20s 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:
Sensing Accuracy Range:
± 2°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 Bag

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

DS18S20 Series 3 to 5.5 V High-Precision 1-Wire Digital Thermometer - TO-92