The MAX6689 is a precision multichannel temperature sensor from Maxim that monitors its own temperature and the temperatures of up to six external diode-connected transistors. All temperature channels have programmable alert thresholds. Channels 1, 4, 5, and 6 also have programmable overtemperature thresholds. When the measured temperature of a channel exceeds the respective threshold, a status bit is set in one of the status registers. Two open-drain outputs, OVERT and ALERT, assert corresponding to these bits in the status register. The 2-wire serial interface supports the standard system management bus (SMBus™) protocols: write byte, read byte, send byte, and receive byte for reading the temperature data and programming the alarm thresholds. The MAX6689 is specified for an operating temperature range of -40°C to +125°C and is available in 20-pin QSOP and TSSOP packages.
The MAX6689 from Maxim Integrated is a precision multichannel temperature monitor that measures its own die temperature and up to six external diode‑connected transistors. It provides programmable alert thresholds for each channel and over‑temperature thresholds for channels 1, 4, 5, and 6, with open‑drain ALERT and OVERT outputs.
Communication is via a standard 2‑wire SMBus‑compatible serial interface, and the device is offered in 20‑pin QSOP and TSSOP packages. It operates over a wide temperature range and includes standby modes for low‑power operation.
| Operating Temperature Range | -40 °C to +125 °C |
|---|---|
| Supply Voltage (VCC) | 3.0 V to 5.5 V |
| Number of Temperature Channels | 7 (1 local + 6 remote) |
It uses a 2‑wire SMBus‑compatible serial interface for reading temperature data and programming thresholds.
The device provides seven temperature channels: one local sensor and six remote diode‑connected channels.
ALERT asserts when any channel exceeds its programmed alert threshold, while OVERT asserts when a channel exceeds its over‑temperature threshold.