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Product Descriptions

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 microprocessor. 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.

Product Applications

Consumer Products

Industrial Systems

Thermally Sensitive Systems

Thermometers

Thermostatic Controls

Product Features

Unique 1-Wire? Interface Requires Only One Port Pin for Communication

Reduce Component Count with Integrated Temperature Sensor and EEPROM

Measures Temperatures from -55°C to +125°C (-67°F to +257°F)

±0.5°C Accuracy from -10°C to +85°C

Programmable Resolution from 9 Bits to 12 Bits

No External Components Required

Parasitic Power Mode Requires Only 2 Pins for Operation (DQ and GND)

Simplifies Distributed Temperature-Sensing Applications with Multidrop Capability

Each Device Has a Unique 64-Bit Serial Code Stored in On-Board ROM

Flexible User-Definable Nonvolatile (NV) Alarm Settings with Alarm Search Command Identifies Devices with Temperatures Outside 

Programmed Limits

Available in 8-Pin SO (150 mils), 8-Pin μSOP, and 3-Pin TO-92 Packages

Product Images

Payment&Transportation

Official Certificate&Certificate

Multiple product supply

Company office environment

Warehouse Real Shot

Standard packaging

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