Specifications
| Type | Description |
|---|---|
| Part Number | LM92 |
| Manufacturer | Texas Instruments |
| Product Type | Digital temperature sensor |
| Category | Sensors |
| Package / Case | SOIC, D (R-PDSO-G8), 8-pin |
| Supply Voltage Range | 2.7 to 5.5 V; Operating ratings, +VS |
| Specified Temperature Range | -55 to +150 °C; Operating ratings, TMIN to TMAX |
| Temperature Accuracy | ±0.33 °C max; TA=+30°C, +VS=3.3 V to 4.0 V |
| Temperature Accuracy | ±0.50 °C max; TA=10°C or +50°C, +VS=3.3 V to 4.0 V |
| Temperature Accuracy | ±1.00 °C max; TA=-10°C or +85°C, +VS=3.3 V to 4.0 V |
| Temperature Accuracy | ±1.25 °C max; TA=+125°C, +VS=4.0 V |
| Temperature Accuracy | ±1.50 °C max; TA=-25°C to +150°C, +VS=4.0 V |
| Resolution | 13 bits; 0.0625 °C; 12 bits + sign, two's complement |
| Linearity | ±0.5 °C max; Temperature-to-digital converter characteristic |
| Temperature Conversion Time | 500 ms typ, 1000 ms max; Temperature data update interval |
| Quiescent Current | 0.35 mA typ; I2C inactive |
| Quiescent Current | 0.35 mA typ, 0.625 mA max; I2C active |
| Shutdown Current | 5 µA typ; Shutdown mode |
| Default Hysteresis Temperature | 2 °C; THYST default value at power-up |
| Default Low Limit Temperature | 10 °C; TLOW default value at power-up |
| Default High Limit Temperature | 64 °C; THIGH default value at power-up |
| Default Critical Temperature | 80 °C; TC default value at power-up |
| SDA/SCL Logic High Input Voltage | 0.7 × +VS min to +VS + 0.3 V max; Digital DC characteristics |
| SDA/SCL Logic Low Input Voltage | -0.3 V min to 0.3 × +VS max; Digital DC characteristics |
| SDA/SCL Digital Input Hysteresis | 500 mV typ, 250 mV min; Digital DC characteristics |
| A0/A1 Logic High Input Voltage | 2.0 V min to +VS + 0.3 V max; Address input pins |
| A0/A1 Logic Low Input Voltage | -0.3 V min to 0.7 V max; Address input pins |
| Logic High Input Current | 0.005 µA typ, 1.0 µA max; VIN=+VS |
| Logic Low Input Current | -0.005 µA typ, -1.0 µA max; VIN=0 V |
| Digital Input Capacitance | 20 pF typ; All digital inputs |
| High Level Output Current | 10 µA max; VOH=+VS |
| Low Level Output Voltage | 0.4 V max; IOL=3 mA |
| T_CRIT_A Output Saturation Voltage | 0.8 V max; IOUT=4.0 mA |
| T_CRIT_A Delay | 1 conversion max; Critical temperature alarm output delay |
| Output Fall Time | 250 ns max; CL=400 pF, IO=3 mA |
| SCL Clock Period | 2.5 µs min, 1 ms max; Serial bus digital switching characteristic |
| Data In Setup Time to SCL High | 100 ns min; Serial bus digital switching characteristic |
| Data Out Stable After SCL Low | 0 ns min; Serial bus digital switching characteristic |
| SDA Low Setup Time to SCL Low | 100 ns min; Start condition |
| SDA High Hold Time After SCL High | 100 ns min; Stop condition |
| SDA/SCL Low Time for Serial Interface Reset | 75 ms min, 300 ms max; Timeout reset to idle bus state |
| Absolute Maximum Supply Voltage | -0.3 to 6.5 V; Absolute maximum rating |
| Absolute Maximum Voltage at Any Pin | -0.3 V to +VS + 0.3 V; Absolute maximum rating |
| Input Current at Any Pin | 5 mA max; Absolute maximum rating |
| Package Input Current | 20 mA max; Absolute maximum rating |
| T_CRIT_A and INT Output Sink Current | 10 mA max; Absolute maximum rating |
| T_CRIT_A and INT Output Voltage | 6.5 V max; Absolute maximum rating |
| Storage Temperature | -65 to +125 °C; Absolute maximum rating |
| ESD Susceptibility | 2500 V; Human body model, 100 pF through 1.5 kΩ |
| ESD Susceptibility | 250 V; Machine model, 200 pF discharged directly into each pin |
| Serial Interface | I2C-compatible two-wire interface; SDA and SCL pins |
| Address Selection | Up to 4 devices on a single bus; A0 and A1 user-set address inputs |
| Interrupt Output | Open-drain INT output; Active outside programmable TLOW to THIGH window |
| Critical Alarm Output | Open-drain T_CRIT_A output; Active above programmable critical limit |
| Datasheet Status | request_only |
Product Overview
The LM92 is a Texas Instruments digital temperature sensor in the Sensor category. It uses an I2C-compatible two-wire interface on SDA and SCL, with A0 and A1 address inputs allowing up to four devices on a single bus. Temperature data is reported as 13 bits, including 12 bits plus sign in two's-complement format, with 0.0625 °C resolution.
The device is specified for operation from 2.7 to 5.5 V and across -55 to +150 °C. Temperature accuracy is condition-dependent, including ±0.33 °C max at +30 °C and +VS from 3.3 V to 4.0 V, and ±1.50 °C max across -25 °C to +150 °C at +VS = 4.0 V. The temperature conversion update interval is 500 ms typical and 1000 ms maximum.
Packaged as SOIC, D (R-PDSO-G8), 8-pin, the LM92 includes programmable temperature-window and critical-temperature outputs. INT is an open-drain output active outside the programmable TLOW to THIGH window, while T_CRIT_A is an open-drain output active when temperature exceeds the programmable critical limit.
Key Features
- 2.7 to 5.5 V operating supply range
- -55 to +150 °C specified temperature range
- 13-bit temperature data with 0.0625 °C resolution
- I2C-compatible two-wire interface on SDA and SCL
- A0 and A1 address inputs support four bus devices
- Open-drain INT output for TLOW to THIGH window alarms
- Open-drain T_CRIT_A output for critical temperature alarms
- 500 ms typical temperature data update interval
- 5 µA typical current in shutdown mode
- SOIC, D (R-PDSO-G8), 8-pin package
Typical Applications
- I2C temperature monitoring
- Multi-sensor temperature buses
- Programmable temperature window alarms
- Critical temperature alarm outputs
- Shutdown-mode temperature sensing
- SOIC-mounted sensor designs
Procurement Notes
When requesting a quote for LM92, buyers should confirm the manufacturer, package or case, required quantity, target date code, compliance documents, packing method, destination country and expected delivery schedule.
If alternatives are acceptable, buyers should share the approved vendor list, required electrical or optical limits, package constraints and qualification requirements. Any alternative part should be reviewed by the buyer's engineering team before production use.
For analog and signal-chain sourcing, supply voltage, bandwidth, accuracy, noise level, package, temperature grade, input/output configuration and qualification requirements should be verified before approval.
FAQ
What supply voltage range does the LM92 support?
The LM92 operates from a +VS supply voltage range of 2.7 to 5.5 V under the operating ratings stated in the manufacturer technical datasheet.
What temperature range is specified for the LM92?
The LM92 is specified for operation from -55 to +150 °C. Its accuracy varies by temperature and supply condition, with listed maximum error values from ±0.33 °C to ±1.50 °C.
What digital interface does the LM92 use?
The LM92 uses an I2C-compatible two-wire interface on SDA and SCL. Address inputs A0 and A1 allow up to four LM92 devices on a single bus.
What alarm outputs are available on the LM92?
The LM92 provides an open-drain INT output for temperatures outside the programmable TLOW to THIGH window and an open-drain T_CRIT_A output for temperatures above the programmable critical limit.
Technical Review & Sourcing Note
Prepared by LDeepAI Component Sourcing Team. Reviewed for RFQ, documentation and alternative sourcing use. Last updated: July 28, 2026.
This page is based on manufacturer datasheet information and LDeepAI sourcing review. Specifications should be verified against the official manufacturer datasheet before final procurement or design approval. Final electrical, optical and reliability approval should be confirmed by the buyer's engineering team.