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DS18B20: 1-Wire Temperature Sensor — Datasheet & Buying
DS18B20 guide: programmable resolution thermometer, 1-Wire interface, applications and sourcing.
DS18B20 guide: programmable resolution thermometer, 1-Wire interface, applications and sourcing.
The DS18B20 measures temperature with 9-12 bit resolution over a 1-Wire bus. This guide covers its specs and procurement.
By Vigny (深圳市华芯购电子有限公司) · Published 2026-09-27 · Data verified 2026-09-29 · Sources: manufacturer datasheets & HuaXinGou stock verification
The DS18B20 from Analog Devices (Maxim) provides -55°C to +125°C measurement with ±0.5°C accuracy from -10°C to +85°C. It uses the 1-Wire protocol, needing only one data line plus power.
Programmable resolution (9-12 bits), parasite power mode, unique 64-bit ROM for multi-drop addressing, and alarm thresholds. Packages include TO-92, SOIC-8 and waterproof probe versions.
Temperature monitoring in HVAC, refrigerators, incubators, data centers, and industrial process control.
DS18B20 is produced by Analog Devices/Maxim with Chinese equivalents (e.g., DALLAS clones). Verify brand for accuracy-critical designs. HuaXinGou quotes on request.
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