The LM75BIMMX-3/NOPB is a digital local temperature sensor from Texas Instruments that reports temperature over an I²C bus with 9-bit resolution. The sensor integrates an output switch, programmable limit, and shutdown mode — the programmable limit can be set to assert an interrupt or alert pin when temperature crosses a threshold, offloading the host MCU from continuous polling.
Accuracy and supply voltage — two decisions that shape the BOM
Accuracy is ±2°C typical, ±3°C maximum over -55°C to 125°C. The supply range of 3V to 5.5V accepts both 3.3V and 5V logic rails without an external regulator. That saves a linear regulator and its associated dropout margin, but the I²C bus voltage must match the sensor's VDD — running a 5V sensor on a 3.3V bus pulls the SDA/SCL high below the Vih(min) threshold, so confirm the bus pull-up voltage matches the supply.
Package and mounting — 8-VSSOP footprint considerations
The sensor is supplied in an 8-VSSOP package (also described as 8-TSSOP or 8-MSOP with 0.118-inch, 3.00mm width). The ROHS3 compliance eliminates any conflict with lead-free assembly processes.
That means no forced last-time-buy window on the horizon, and the part can be designed in without an immediate second-source contingency. The base product number LM75 covers a family of I²C temperature sensors with different accuracy grades and package options.