±1.5°C accuracy on a 2.7-5.5V I²C bus
The TMP175AIDR is a digital local temperature sensor from Texas Instruments that communicates over an I²C or SMBus interface. That's solid for board-level thermal monitoring, fan control, or over-temperature shutdown — not for a calibration standard, but plenty for keeping a system out of thermal trouble. The operating temperature range stretches from -55°C to 127°C, so it survives cold storage and hot enclosures alike.
One-shot, shutdown, and programmable resolution
Beyond the basic continuous conversion mode, the TMP175AIDR packs a one-shot mode for on-demand reads — fire it, read the result, then put the part back into shutdown. That cuts average current to microamps in a battery-powered or energy-harvesting design. There's also a standby mode and an output switch (the ALERT pin) that can be programmed as a comparator or thermostatic interrupt. Resolution is fixed at 9 bits (0.5°C per LSB), which is coarser than the 12-bit parts in the same family but faster on the bus — a conversion completes in under 30 ms typical. For applications where 0.5°C steps are acceptable, the trade-off is a simpler I²C transaction and less firmware overhead.
8-SOIC — standard footprint, easy rework
That's a garden-variety footprint with 1.27 mm pin pitch — no fine-pitch alignment issues, no hidden thermal pad. It reflows on a standard lead-free profile and is hand-solderable for prototypes. The supplier device package is the same 8-SOIC, so no confusion between package variants.
Texas Instruments lists the TMP175AIDR as Active. For a new design-in, this part is safe to commit to the BOM without worrying about a forced migration mid-cycle. The part is ROHS3 compliant, meeting the current EU restriction limits. No special handling documentation is required beyond the standard TI datasheet.