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
DS18B20

Maxim Integrated Products

Board Mount Temperature Sensors

Data Sheet

Negotiable 
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