TDSEMIC DS18B20Z-TD

The DS18B20 digital thermometer provides 9-bit to 12-bit temperature measurements and features user-programmable nonvolatile upper and lower alarm thresholds. The device communicates over a 1-Wire bus, requiring only one signal line and one ground wire. Its temperature measurement range is -55°C to +125°C (-67°F to +257°F), with a measurement accuracy of ±0.4°C over the -10°C to +70°C range. In addition, it can operate in parasite power mode, drawing power directly from the signal line without requiring an external power supply. Each DS18B20 contains a unique 64-bit serial code, allowing multiple devices to be networked on the same 1-Wire bus, so that a single processor can control numerous sensors distributed over a large area. This networking capability is particularly well-suited for HVAC environmental controls, building and equipment monitoring, grain temperature measurement, industrial temperature sensing, and process monitoring and control applications.

• Single-wire interface — only one port pin required for communication
• Globally unique 64-bit serial number per device
• Multi-point distributed temperature sensing, no external components required
• Parasite power capable via data line; supply voltage range: 2.5V ~ 5.5V
• Temperature measurement range: -55℃ to +125℃ (-67°F to +257°F)
• Accuracy ±0.4℃ over -10℃ ~ 70℃ range
• Selectable 9 to 12-bit temperature resolution
• Temperature conversion time <750ms at 12-bit resolution
• User-definable nonvolatile temperature alarm settings
• Alarm search command identifies and addresses devices exceeding programmed temperature limits
• Strong ESD protection: HBM 8000V, MM 800V
• Available in SMT MSOP8, SOP8 packages and 3-pin TO-92 package

• Temperature control
• Industrial systems
• Consumer products
• Grain temperature monitoring
• Thermometers