MAX6633/MAX6634/MAX6635 is a temperature sensor, programmable overtemperature alarm and SMBus™/I2C™-compatible serial interface integrated by MAXIM.
The MAX6633, MAX6634, and MAX6635 are 12‑bit plus‑sign temperature sensors with an SMBus/I2C‑compatible serial interface. They convert die temperature to digital values with 0.0625 °C resolution and support programmable over‑temperature alarms. The devices operate from +3 V to +5.5 V and can measure temperatures up to +150 °C.
Key features include multiple address pins for bus sharing (up to 16 devices for MAX6633, 8 for MAX6634, 4 for MAX6635), shutdown mode to reduce power consumption, and user‑programmable temperature thresholds. Detailed electrical characteristics, pin descriptions, and SMBus timing diagrams are provided for hardware designers.
| Supply Voltage Range | +3 V to +5.5 V |
|---|---|
| Operating Temperature Range | -55 °C to +150 °C |
| Temperature Resolution | 0.0625 °C |
| Accuracy (0 °C to +50 °C) | +1 °C max |
| Number of Address Pins (MAX6633) | 4 (up to 16 devices) |
| Number of Address Pins (MAX6634) | 3 (up to 8 devices) |
| Number of Address Pins (MAX6635) | 2 (up to 4 devices) |
They use an SMBus/I2C‑compatible serial interface for reading temperature data and configuring thresholds.
The sensors provide a resolution of 0.0625 °C per LSB.