DS18B20

Programmable Resolution 1-Wire Digital Thermometer

High-Precision Temperature Monitoring with Minimal Connections Ideal for Multisensor Systems
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Status Explanations for product status codes

Part Number Status
DS18B20 Active: In Production. See Ordering Information for details.

Data Sheet

Download this datasheet in PDF formatDownload Rev 4 (PDF, 260kB)
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Technical Documents

App Note 27  Understanding and Using Cyclic Redundancy Checks with Maxim 1-Wire and iButton Products
App Note 126  1-Wire Communication Through Software
Tutorial 148  Guidelines for Reliable Long Line 1-Wire Networks
App Note 158  1-Wire® Tagging with XML
App Note 162  Interfacing the DS18X20/DS1822 1-Wire® Temperature Sensor in a Microcontroller Environment
App Note 187  1-Wire Search Algorithm
App Note 192  Using the DS2480B Serial 1-Wire® Line Driver
App Note 208  Curve Fitting the Error of a Bandgap-Based Digital Temperature Sensor
Reference Schematic 244  Advanced 1-Wire Network Driver
App Note 1100  White Paper 5: Using 1-Wire APIs for Data Sheet Commands
App Note 2420  1-Wire Communication with a Microchip PICmicro Microcontroller
App Note 2965  1-Wire Master Device Configuration
App Note 3754  Single-Wire Serial Bus Carries Isolated Power and Data
App Note 3930  Package Thermal Resistance Values (Theta JA, Theta JC) for Temperature Sensors and 1-Wire Devices
App Note 4255  How to Power the Extended Features of 1-Wire® Devices
App Note 4277  Getting Started with the MAXQ2000 USB Thumb Evaluation Kit
App Note 4377  Comparison of the DS18B20 and DS18S20 1-Wire® Digital Thermometers
Reference Schematic 4477  Reference Design of a 1-Wire® Bidirectional Voltage-Level Translator for 1.8V to 5V
App Note 4600  Simple Software Validates the Hardware CRC and Detects Errors in the Serial Bit Stream of 1-Wire® Thermal Devices
Tutorial 4679  Thermal Management Handbook
Tutorial 4699  Overview of Sensor Signal Paths
Tutorial 4700  Introduction to Medical Instruments and Growing Trend for Point-of-Care and Near-Patient Testing
App Note 5507  Understanding the DS1WM Synthesizable 1-Wire Bus Master
Reference Schematic 5508  Create a 1-Wire Master with Xilinx PicoBlaze

Product Guides

1-Wire® Products (PDF)
Thermal Management (PDF)

Reliability Reports

Reliability Report: DS18B20.pdf

Software/Models

DS18B20 IBIS Model

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Information Index

Rev 4; 2008-05-08
This page last modified: 2013-09-24