Industrial temperature and interrupt — what they mean on the board
The interrupt output (active-low, open-drain) flags a state change on any input pin without the host polling the I²C bus — useful for pushbutton panels or limit-switch inputs where firmware latency matters. Power-on reset (POR) ensures the outputs default to inputs at power-up, preventing unintended drive before the host configures the port.
The 8-X2SON package (1.35 x 0.8 mm body) is a leadless plastic package with an exposed pad for thermal relief. The tape-and-reel option (TR suffix) suits automated pick-and-place; cut-tape (CT) is available for prototype or low-volume builds.