Specs side by side
2 parts compared · 0 differing specs across 5 total parameters.
| Parameter | ||
|---|---|---|
| Case | SO-8 / module | SO-8 / module |
| Component Category | Thermocouple Amplifiers | Thermocouple Amplifiers |
| Market Reality | These two chips are how hobby and industrial projects read K-type thermocouples: an SPI-ish three-wire interface, cold-junction compensation included, 0.25C steps out - and a substitution story that catches people exactly once. The MAX6675 is discontinued, the MAX31855 is its documented successor, and despite the family resemblance they are neither pin-compatible nor code-compatible: the supply windows differ, the T- pin moves from ground to floating, the temperature range and fault vocabulary expand, and the SPI frames changed enough that each has its own library. The market is full of adapter modules for both - the honest repair path depends on which one the firmware was written for. | These two chips are how hobby and industrial projects read K-type thermocouples: an SPI-ish three-wire interface, cold-junction compensation included, 0.25C steps out - and a substitution story that catches people exactly once. The MAX6675 is discontinued, the MAX31855 is its documented successor, and despite the family resemblance they are neither pin-compatible nor code-compatible: the supply windows differ, the T- pin moves from ground to floating, the temperature range and fault vocabulary expand, and the SPI frames changed enough that each has its own library. The market is full of adapter modules for both - the honest repair path depends on which one the firmware was written for. |
| Role In Circuit | Original Reference Part | Original Reference Part |
| Sourcing Status | Active Shenzhen Spot Sourcing (24–48h) | Active Shenzhen Spot Sourcing (24–48h) |