This datasheet describes the ON Semiconductor MC74, a serial digital temperature sensor with 1°C resolution and SMBus/I²C-compatible communication.
The MC74 is a serial digital temperature sensor designed for low-cost applications. It converts temperature data from an integrated thermal sensing element into an 8-bit serial digital word. The device communicates via a 2-wire SMBus/I²C-compatible serial port, offering a temperature resolution of 1 °C and a nominal conversion rate of 8 samples/sec.
| Temperature Resolution | 1 °C |
|---|---|
| Operating Current | 200 µA |
| Operating Temperature Range | -40 °C to +125 °C |
| Accuracy (+25°C to +85°C) | ±2°C |
| Accuracy (0°C to +125°C) | ±3°C |
The device communicates via a 2-wire SMBus/I²C-compatible serial port.
The MC74 is available in 3.3V and 5.5V versions.
Typical uses include thermal protection for hard disk drives, low-cost thermostat controls, and power supplies.