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Details for Texas Instruments


±1°C Temperature Sensor with I2C/SMBus Interface
Buy Directly from Texas Instruments (5260 in Stock)
$0.7500 per unit
Series Information for LM73CIMKX-0/NOPB - Texas Instruments


  • feature
    Fast Conversion Rate Ideal for Quick Power Up and Measuring Rapidly Changing Temperature
  • feature
    Key Specifications
  • feature
    Open-Drain ALERT Output Pin Goes Active When Temperature is Above a Programmed Temperature Limit
  • feature
    Programmable Digital Temperature Resolution From 11 Bits to 14 Bits
  • feature
    SMBus and I2 C-compatible Two-Wire Interface
  • feature
    Shutdown Mode With One-shot Feature Available for Very Low Average Power Consumption
  • feature
    Single Address Pin Offers Choice of Three Selectable Addresses Per Version for a Total of Six Possible Addresses.
  • feature
    Supports 400-Khz Operation
  • feature
    UL Recognized Component
  • feature
    Very Stable, Low-noise Digital Output


The LM73 is an integrated, digital-output temperature sensor featuring an incremental Delta-Sigma ADC with a two-wire interface that is compatible with the SMBus and I2C interfaces. The host can query the LM73 at any time to read temperature. Available in a 6-pin SOT package, the LM73 occupies very little board area while operating over a wide temperature range (–40°C to 150°C) and providing ±1°C accuracy from –10°C to 80°C. The user can optimize between the conversion time and the sensitivity of the LM73 by programming it to report temperature in any of four different resolutions. Defaulting to 11-bit mode (0.25°C/LSB), the LM73 measures temperature in a maximum time of 14 ms, making it ideal for applications that require temperature data very soon after power-up. In its maximum resolution, 14-bit mode (0.03125°C/LSB), the LM73 is optimized to sense very small changes in temperature. A single multi-level address line selects one of three unique device addresses. An open-drain ALERT output goes active when the temperature exceeds a programmable limit. Both the data and clock lines are filtered for excellent noise tolerance and reliable communication. Additionally, a time-out feature on the clock and data lines causes the LM73 to automatically reset these lines if either is held low for an extended time, thus exiting any bus lock-up condition without processor intervention.


IC Output Type:
Sensing Accuracy Range:
± 2.5°C
Sensing Temperature Min:
Sensing Temperature Max:
Sensor Case Style:
No. of Pins:
Supply Voltage Min:
Supply Voltage Max:
Product Range:
Automotive Qualification Standard:
RoHS Phthalates Compliant:
MSL 1 - Unlimited
No SVHC (27-Jun-2018)

Alternate Descriptions

Avnet America

Temp Sensor Digital Serial (2-Wire) 6-Pin TSOT T/R

Avnet America product

Avnet Europe

Temp Sensor Digital Serial (2-Wire) 6-Pin TSOT T/R

Avnet Europe product

Texas Instruments

±1°C Temperature Sensor with I2C/SMBus Interface

Texas Instruments product