ds18b20

Key Features

• Unique 1-Wire^® Interface Requires Only One Port Pin for Communication
• Reduce Component Count with Integrated Temperature Sensor and EEPROM
  • Measures Temperatures from -55°C to +125°C (-67°F to +257°F)
  • ±0.5°C Accuracy from -10°C to +85°C
  • Programmable Resolution from 9 Bits to 12 Bits
  • No External Components Required
• Parasitic Power Mode Requires Only 2 Pins for Operation (DQ and GND)
• Simplifies Distributed Temperature-Sensing Applications with Multidrop Capability
  • Each Device Has a Unique 64-Bit Serial Code Stored in On-Board ROM
• Flexible User-Definable Nonvolatile (NV) Alarm Settings with Alarm Search Command Identifies Devices with Temperatures Outside Programmed Limits
• Available in 8-Pin SO (150 mils), 8-Pin µSOP, and 3-Pin TO-92 Packages