(Hong Kong)
Product Summary
The DS1721 is a 2-Wire Digital Thermometer and Thermostat. It provides 12-bit temperature readings, which indicate the temperature of the device. Thermostatic settings and temperature readings are all communicated to/from the DS1721 over a simple 2-wire serial interface. No additional components are required; the device is truly a “temperature-to-digital” converter. The DS1721 has three address bits that allow a user to multidrop up to eight sensors along the 2-wire bus, greatly simplifying the bussing of distributed temperature sensing networks.
Parametrics
DS1721 absolute maximum ratings: (1)Voltage on VDD, Relative to Ground: -0.3V to +6.0V; (2)Voltage on any other pin, Related to Ground: -0.3V to +6.0V; (3)Operating Temperature: -55℃ to +125℃; (4)Storage Temperature: -55℃ to +125℃; (5)Soldering Temperature: 260℃ for 10 seconds.
Features
DS1721 features: (1)Temperature measurements require no external components with ±1℃ accuracy; (2)Measures temperatures from -55℃ to +125℃; Fahrenheit equivalent is -67°F to +257°F; (3)Temperature resolution is configurable from 9 to 12 (default) bits (0.5°C to 0.0625°C; (4)resolution; (5)Maximum conversion time (9-bit resolution) of 93.75 ms; (6)Thermostatic settings are user-definable; (7)Data is read/written via a 2-wire serial interface (open drain I/O lines); 3-bit addressability; (8)Wide power supply range (2.7V - 5.5V); (9)Applications include personal computers, cellular telephones, office equipment, or any thermally sensitive system; (10)8-pin, 150-mil SOIC package and 8-pin μSOP package.
Diagrams
| Image | Part No | Mfg | Description |  |
Pricing (USD) |
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 DS1721S+ |
Maxim Integrated Products |
Board Mount Temperature Sensors Digital Thermometer & Thermostat |
Data Sheet |
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DS1721S+T&R |
Maxim Integrated Products |
Board Mount Temperature Sensors Digital Thermometer & Thermostat |
Data Sheet |
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DS1721U/T&R+W |
Maxim Integrated Products |
Board Mount Temperature Sensors Digital Thermometer & Thermostat |
Data Sheet |
Negotiable |
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DS1721U+T&R |
Maxim Integrated Products |
Board Mount Temperature Sensors Digital Thermometer & Thermostat |
Data Sheet |
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DS1721S/T&R |
Maxim Integrated Products |
Board Mount Temperature Sensors |
Data Sheet |
Negotiable |
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DS1721S |
Maxim Integrated Products |
Board Mount Temperature Sensors |
Data Sheet |
Negotiable |
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DS1721 |
Other |
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Data Sheet |
Negotiable |
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DS1721U+ |
Maxim Integrated Products |
Board Mount Temperature Sensors Digital Thermometer & Thermostat |
Data Sheet |
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