Comparison of the DS18B20 and DS18S20 1-Wire® Digital Thermometers

Abstract: The DS18B20 and DS18S20 are two very popular 1-Wire digital thermometers. This application note explains the similarities and differences between these two parts, and guides customers in selecting the best part for an application.
Comparison of the DS18B20 and DS18S20 1-Wire
Digital Thermometers
Mar 18, 2009

Abstract: The DS18B20 and DS18S20 are two very popular 1-Wire digital thermometers. This application note explains the
similarities and differences between these two parts, and guides customers in selecting the best part for an application.


Introduction
TheDS18B20andDS18S201-Wiredevices are both popular and excellent choices for any application requiring digital
thermometers. Both devices offer the same resolution and accuracy. The two parts differ only in how the data is presented to the
user. This application note describes how the devices work and the differences between them. Applications for each device are
recommended.


How the Devices Work
The DS18B20 and DS18S20 both use the same base design.Temperat