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DS18B20 Datasheet

DS18B20 Datasheet

Programmable Resolution 1-Wire Digital Thermometer
Part No.: DS18B20
Page: 20 Pages
Size: 383 KB
Manufacturer: Maxim Integrated
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Views: 2
Update Time: 2024-12-26 15:14:23
DataSheet: Download

DS18B20 Datasheet Applicable Part

Part No. Packing SPQ Marking MSL Pins Temp Range Package Description Buy
DS18B20 Bag 2000 18B20 1 3 -55°C ~ 125°C 3 TO-92  
DS18B20+ Bag 2000 18B20 1 3 -55°C ~ 125°C 3 TO-92  
DS18B20/T&R Reel 2000 18B20 1 3 -55°C ~ 125°C 3 TO-92 (2000 Piece)  
DS18B20+T&R Reel 2000 18B20 1 3 -55°C ~ 125°C 3 TO-92 (2000 Piece)  
DS18B20-SL/T&R Reel 2000 18B20 1 3 -55°C ~ 125°C 3 TO-92 (2000 Piece)*  
DS18B20-SL+T&R Reel 2000 18B20 1 3 -55°C ~ 125°C 3 TO-92 (2000 Piece)*  
DS18B20U Tube 20 18B20 1 8 -55°C ~ 125°C 8 FSOP  
DS18B20U+ Tube 50 18B20 1 8 -55°C ~ 125°C 8 FSOP  
DS18B20U/T&R Reel 3000 18B20 1 8 -55°C ~ 125°C 8 FSOP (3000 Piece)  
DS18B20U+T&R Reel 3000 18B20 1 8 -55°C ~ 125°C 8 FSOP (3000 Piece)  
DS18B20Z Tube 100 DS18B20 1 8 -55°C ~ 125°C 8 SO  
DS18B20Z+ Tube 100 DS18B20 1 8 -55°C ~ 125°C 8 SO  
DS18B20Z/T&R Reel 2500 DS18B20 1 8 -55°C ~ 125°C 8 SO (2500 Piece)  
DS18B20Z+T&R Reel 2500 DS18B20 1 8 -55°C ~ 125°C 8 SO (2500 Piece)  
DS18B20/GG8 Bag 2000   1 3 -55°C ~ 125°C 3 TO-92  
DS18B20+PAR Bag 2000   1 3 -40°C ~ 85°C 3 TO-92  
SPQ:Standard Pack Quantity;MSL:Moisture Sensitivity Level

DS18B20 Datasheet(PDF)

DS18B20 Datasheet(Picture)

DS18B20 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

DS18B20 Applications

  • Consumer Products
  • Industrial Systems
  • Thermally Sensitive Systems
  • Thermometers
  • Thermostatic Controls

DS18B20 Description

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.

DS18B20 Related Parts

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