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Texas Instruments TMP112NAIDRLR — Sensors & Transducers

TMP112NAIDRLR Digital Temperature Sensor – Texas Instruments

MPNTMP112NAIDRLR
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Texas Instruments TMP112NAIDRLR, Digital Local Temperature Sensor, 12-bit, I²C/SMBus Output, SOT-5X3 Package, ±1°C Accuracy, -40°C to 125°C

$2.4300Ref. price · indicative, final on quote
Texas Instruments TMP112NAIDRLR datasheet (PDF)
PackagingSOT-563, SOT-666
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

TMP112NAIDRLR specifications
ParameterValue
Output typeI²C/SMBus
Sensor typeDigital, Local
MountingSurface Mount
Voltage1.4V ~ 3.6V
Operating temperature-40°C~125°C
PackageTape & Reel (TR); Cut Tape (CT)
FeaturesOne-Shot, Output Switch, Shutdown Mode
Resolution12 b
CaseSOT-563, SOT-666
Test condition0°C ~ 85°C (-40°C ~ 125°C)
Accuracy - highest (Lowest)±1°C
Sensing temperature - local-40°C~125°C

Product details

Sensor identity and key ratings

The TMP112NAIDRLR is a digital local temperature sensor from Texas Instruments, delivering 12-bit resolution with an I²C/SMBus interface.

Supply rail and power management

Operating from 1.4V to 3.6V, the sensor connects directly to 1.8V or 3.3V logic rails — no external LDO needed for the supply. The One-Shot and Shutdown Mode features let the system take a temperature reading on demand and then drop the quiescent current to near zero, which is useful in battery-powered or duty-cycled applications.

Package and assembly fit

Supplied in a SOT-5X3 package (SOT-563/SOT-666 footprint), the TMP112NAIDRLR is a surface-mount device suited for reflow assembly. The small body saves board area, but the pad layout is standard enough that most PCB fabs handle it without extra cost.

Frequently asked questions

What is the I²C address of the TMP112NAIDRLR?

The TMP112NAIDRLR uses a 7-bit I²C address; the factory-programmed default is 0x48 (1001000). The address can be changed via the ADD0 pin if multiple sensors share the bus, but the datasheet must be consulted for the exact pin-strapping options.

Is the TMP112NAIDRLR a direct replacement for the TMP102?

Both are 12-bit digital temperature sensors from TI with I²C/SMBus output, but the TMP112NAIDRLR operates from 1.4V to 3.6V (vs. TMP102's 1.4V to 3.6V — same range) and uses a different package (SOT-5X3 vs. SOT-563). Pin compatibility is not guaranteed; verify the footprint and register map before substituting.