Temperature accuracy — what the ±2°C spec means for your trip point
The DS75S+ is a digital local temperature sensor with 11-bit resolution, giving a temperature step of roughly 0.125°C per LSB. The accuracy is rated ±2°C across the -25°C to +100°C range, widening to ±3°C at the extremes of -55°C and +125°C. For a thermal-shutdown threshold set at 105°C, that ±3°C spread means the actual trip could occur anywhere between 102°C and 108°C — something to account for in the system guard band.
Supply and interface — I²C bus integration
The I²C output keeps the bus wiring to two lines (SDA, SCL) plus the supply pair — no additional ADC channel needed. The programmable resolution and programmable limit features let you set the conversion cycle and the overtemperature alert threshold over the bus, which cuts external comparator count.
Temperature grade — extended range for harsh environments
If your board sees cold-soak at -40°C or lives near a motor drive that radiates heat, this sensor stays within its rated window. The sensing temperature range matches the operating range, so the local die temperature reading is valid across the entire span.
Package and board-fit — 8-SOIC footprint
The DS75S+ comes in an 8-SOIC package (0.154-inch body width, 3.90mm) with surface-mount termination. The supplier device package is also 8-SOIC, so the footprint and stencil are standard. The tube packaging is fine for hand assembly or low-volume reflow; for high-volume pick-and-place you may want to check if tape-and-reel is available from the manufacturer.
Compliance and sourcing posture
The DS75S+ is ROHS3 compliant, which means it meets the current EU restriction-of-hazardous-substances directive without exemptions.