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Serial Digital Temperature Sensor

The MC74 is a serial digital temperature sensor suited for low cost applications. Temperature data is converted from the integrated thermal sensing element and made available as an 8–bit serial digital word. Communication with the MC74 is accomplished via 2–wire SMBus/I2C–compatible serial port. Temperature resolution is 1°C. Conversion rate is a nominal 8 samples/sec. Power consumption is only 200 µA (5 µA Standby).

Features

• Tested Operating Temperature Range: –40°C to +125°C

• Simple Serial Port Interface

• Solid State Temperature Sensing:

±2°C Accuracy from +25°C to +85°C

±3°C Accuracy from 0°C to +125°C

• 3.3V and 5.5V Versions

Typical Applications

• Thermal Protection for Hard Disk Drives and Other PC Peripherals

• Low–Cost Thermostat Controls

• Power Supplies