The DS1621 Digital Thermometer and Thermostat provides 9-bit temperature readings, which indicate the temperature of the device. The thermal alarm output, TOUT is active when the temperature of the device exceeds a user-defined temperature TH. The output remains active until the temperature drops below user defined temperature TL, allowing for any hysteresis necessary.
User-defined temperature settings are stored in nonvolatile memory so parts may be programmed prior to insertion in a system. Temperature settings and temperature readings are all communicated to/from the DS1621 over a simple 2-wire serial interface.
Key Features
Applications/Uses
Temperature measurements require no external components
Measures temperatures from -55°C to +125°C in 0.5°C increments. Fahrenheit equivalent is -67°F to 257°F in 0.9°F increments
Temperature is read as a 9-bit value (2-byte transfer)
Wide power supply range (2.7V to 5.5V)
Converts temperature to digital word in less than 1 second
Thermostatic settings are user definable and nonvolatile
Data is read from/written via a 2-wire serial interface (open drain I/O lines)
Applications include thermostatic controls, industrial systems, consumer products, thermometers, or any thermal sensitive system
Notes: **This pricing is BUDGETARY, for comparing similar parts. Prices are in
U.S. dollars and subject to change. Quantity pricing may vary
substantially and international prices may differ due to local
duties, taxes, fees, and exchange rates. For volume-specific prices
and delivery, please see the price and availability page
or contact an authorized distributor.
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