(Hong Kong)
Product Summary
The DS18B20 Digital Thermometer provides 9 to 12–bit centigrade temperature measurements and has an alarm function with nonvolatile user-programmable upper and lower trigger points. The DS18B20 communicates over a 1-Wire bus that by definition requires only one data line (and ground) for communication with a central microprocessor. In addition, the DS18B20 can derive power directly from the data line (“parasite power”), eliminating the need for an external power supply.
Parametrics
DS18B20 absolute maximum ratings: (1)Voltage on Any Pin Relative to Ground: -0.5V to +6.0V; (2)Operating Temperature Range: -55℃ to +125℃; (3)Storage Temperature Range: -55℃ to +125℃; (4)Reflow Oven Temperature: +220℃.
Features
DS18B20 features: (1)Unique 1-Wire interface requires only one port pin for communication; (2)Each device has a unique 64-bit serial code stored in an onboard ROM; (3)Multidrop capability simplifies distributed temperature sensing applications; (4)Requires no external components; (5)Can be powered from data line Power supply range is 3.0V to 5.5V; (6)Measures temperatures from -55℃ to +125℃ ; (7)±0.5℃ accuracy from 10℃ to +85℃; (8)Thermometer resolution is user-selectable from 9 to 12 bits; (9)Converts temperature to 12-bit digital word in 750ms (max.); (10)User-definable nonvolatile (NV) alarm settings.
Diagrams
| Image | Part No | Mfg | Description |  |
Pricing (USD) |
Quantity | ||||||||||||
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 DS18B20 |
Maxim Integrated Products |
Board Mount Temperature Sensors |
Data Sheet |
Negotiable |
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DS18B20/T&R |
Maxim Integrated Products |
Board Mount Temperature Sensors |
Data Sheet |
Negotiable |
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DS18B20+ |
Maxim Integrated Products |
Board Mount Temperature Sensors Prgmble Resolution 1-Wire Parasite Pwr |
Data Sheet |
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DS18B20+PAR |
Maxim Integrated Products |
Board Mount Temperature Sensors Prgmble Resolution 1-Wire Parasite Pwr |
Data Sheet |
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DS18B20+T&R |
Maxim Integrated Products |
Board Mount Temperature Sensors Prgmble Resolution 1-Wire Parasite Pwr |
Data Sheet |
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DS18B20-PAR |
Maxim Integrated Products |
Board Mount Temperature Sensors |
Data Sheet |
Negotiable |
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DS18B20-PAR/T&R |
Maxim Integrated Products |
Board Mount Temperature Sensors |
Data Sheet |
Negotiable |
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DS18B20-PAR+T&R |
Maxim Integrated Products |
Board Mount Temperature Sensors Prgmble Resolution 1-Wire Parasite Pwr |
Data Sheet |
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