Key Selection Information
| Selection Parameter | Confirmed Information |
|---|---|
| Accuracy | ±0.5°C maximum from −20°C to +100°C; ±1°C from −40°C to +125°C |
| Supply | 2.7 V to 5.5 V |
| Resolution | User-selectable 9 to 12 bits |
| Bus / Addresses | I²C/SMBus; eight hardware addresses |
| Compatibility | Pin and register compatible with TI LM75, TMP75, TMP75B and TMP175 |
| Alert | SMBus overtemperature alert function |
| Power | 50 µA typical active; 0.1 µA typical standby |
| Packing | VSSOP (DGK), 8 pins; 2500-piece large tape and reel |
Product Overview
TMP275AIDGKR is an accuracy-upgraded member of the industry-standard LM75-style digital temperature sensor class. It keeps the familiar 8-pin VSSOP pin/register model while tightening maximum error to ±0.5°C from −20°C to 100°C.
Resolution is selectable from 9 to 12 bits. This allows a legacy-compatible design to choose faster conversion when fine code granularity is unnecessary or use 0.0625°C steps at 12 bits for smoother monitoring and control.
Three address pins allow up to eight sensors per bus, while the ALERT output supports hardware threshold signaling. That combination suits distributed thermal monitoring in equipment already built around the LM75/TMP75 ecosystem.
For related devices, see HKEQGOO’s Temperature Sensors category.
Technical Specifications
| Parameter | Verified Information |
|---|---|
| Manufacturer | Texas Instruments |
| Exact MPN | TMP275AIDGKR |
| Accuracy | ±0.5°C maximum from −20°C to +100°C; ±1°C from −40°C to +125°C |
| Supply | 2.7 V to 5.5 V |
| Resolution | User-selectable 9 to 12 bits |
| Bus / Addresses | I²C/SMBus; eight hardware addresses |
| Compatibility | Pin and register compatible with TI LM75, TMP75, TMP75B and TMP175 |
| Alert | SMBus overtemperature alert function |
| Power | 50 µA typical active; 0.1 µA typical standby |
| Packing | VSSOP (DGK), 8 pins; 2500-piece large tape and reel |
| Manufacturer Status | Active / Production |
| Part Marking | T275 |
Functional Highlights
Compatibility reduces redesign cost
Pin and register compatibility can preserve existing firmware and board topology, but an upgrade should still verify power-up assumptions, alert configuration and timing used by the old device.
±0.5°C is specified across a broad −20°C to 100°C band
This makes TMP275 useful when a standard LM75-style interface is required but ordinary ±2°C-class accuracy is not enough.
Design Considerations
- Verify legacy register/alert behavior before assuming a zero-change drop-in replacement.
- Choose resolution according to required conversion latency and code granularity.
- Use the correct ±1°C limit outside the central −20°C to 100°C band.
Product Status and Exact Order Code
Manufacturer status: Active / Production
Texas Instruments lists TMP275AIDGKR as Active / Production; VSSOP (DGK), 8 pins; 2500-piece large tape and reel; Level-2-260C-1 YEAR; −40°C to +125°C; marking T275.
Related Engineering Resources
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