Product Summary

The DS18B20 is a 1-Wire Digital Thermometer. It 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. The applications of the DS18B20 are Thermostatic Controls, Industrial Systems, Consumer Products, Thermometers, or Any Thermally Sensitive System.

Parametrics

DS18B20 absolute maximum ratings: (1)Voltage Range on Any Pin Relative to Ground:-0.5V to +6.0V ; (2)Operating Temperature Range:-55℃ to +125℃; (3)Storage Temperature Range:-55℃ to +125℃.

Features

DS18B20 features: (1)Unique 1-Wire Interface Requires Only One Port Pin for Communication ; (2)Each Device has a Unique 64-Bit Serial Code Stored in an On-Board ROM ; (3)Multidrop Capability Simplifies Distributed Temperature-Sensing Applications ; (4)Requires No External Components ; (5)Can Be Powered from Data Line; Power Supply Range is 3.0V to 5.5V ; (6)Measures Temperatures from -55℃ to +125℃; (7)±0.5℃ Accuracy from -10℃ to +85℃; (8)Thermometer Resolution is User Selectable from 9 to 12 Bits ; (9)Converts Temperature to 12-Bit Digital Word in 750ms (Max).

Diagrams

DS18B20 block diagram

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
DS18B20/T&R
DS18B20/T&R

Maxim Integrated Products

Board Mount Temperature Sensors

Data Sheet

Negotiable 
DS18B20+
DS18B20+

Maxim Integrated Products

Board Mount Temperature Sensors Prgmble Resolution 1-Wire Parasite Pwr

Data Sheet

0-1: $3.59
1-25: $2.39
25-50: $1.45
50-100: $1.42
DS18B20+PAR
DS18B20+PAR

Maxim Integrated Products

Board Mount Temperature Sensors Prgmble Resolution 1-Wire Parasite Pwr

Data Sheet

0-1: $3.59
1-25: $2.39
25-50: $1.45
50-100: $1.42
DS18B20+T&R
DS18B20+T&R

Maxim Integrated Products

Board Mount Temperature Sensors Prgmble Resolution 1-Wire Parasite Pwr

Data Sheet

0-1: $2.74
1-25: $2.06
25-50: $2.00
50-100: $1.81
DS18B20-PAR
DS18B20-PAR

Maxim Integrated Products

Board Mount Temperature Sensors

Data Sheet

Negotiable 
DS18B20-PAR/T&R
DS18B20-PAR/T&R

Maxim Integrated Products

Board Mount Temperature Sensors

Data Sheet

Negotiable 
DS18B20-PAR+T&R
DS18B20-PAR+T&R

Maxim Integrated Products

Board Mount Temperature Sensors Prgmble Resolution 1-Wire Parasite Pwr

Data Sheet

0-1585: $1.27
1585-2000: $1.27
DS18B20-SL/T&R
DS18B20-SL/T&R

Maxim Integrated Products

Board Mount Temperature Sensors

Data Sheet

Negotiable