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Technical Specifications
Parameters and characteristics for this part
| Specification | TMP421AIDCNRG4 |
|---|---|
| Accuracy - Highest (Lowest) [Max] | 1.5 °C |
| Accuracy - Highest (Lowest) [Min] | 2.5 °C |
| Features | Output Switch, Programmable Limit, One-Shot, Shutdown Mode |
| Mounting Type | Surface Mount |
| Operating Temperature [Max] | 125 °C |
| Operating Temperature [Min] | -40 °C |
| Output Type | SMBus |
| Package / Case | SOT-23-8 |
| Resolution | 11 b |
| Sensing Temperature - Local [Max] | 125 °C |
| Sensing Temperature - Local [Min] | -40 °C |
| Sensing Temperature - Remote [Max] | 191 °C |
| Sensing Temperature - Remote [Min] | -64 °C |
| Supplier Device Package | SOT-23-8 |
| Test Condition [Max] | 85 °C |
| Test Condition [Max] | 125 °C |
| Test Condition [Min] | -40 °C |
| Test Condition [Min] | 15 °C |
| Voltage - Supply [Max] | 5.5 V |
| Voltage - Supply [Min] | 2.7 V |
TMP421-Q1 Series
Remote and Local Temperature Sensor with N-Factor and Series-R Correction in WCSP
| Part | Package / Case | Sensing Temperature - Local [Max] | Sensing Temperature - Local [Min] | Resolution | Sensing Temperature - Remote [Max] | Sensing Temperature - Remote [Min] | Output Type | Voltage - Supply [Min] | Voltage - Supply [Max] | Mounting Type | Features | Supplier Device Package | Test Condition [Max] | Test Condition [Max] | Test Condition [Min] | Test Condition [Min] | Accuracy - Highest (Lowest) [Max] | Accuracy - Highest (Lowest) [Min] | Operating Temperature [Max] | Operating Temperature [Min] | Grade | Test Condition | Accuracy - Highest (Lowest) | Qualification |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments | SOT-23-8 | 125 °C | -40 °C | 11 b | 191 °C | -64 °C | SMBus | 2.7 V | 5.5 V | Surface Mount | One-Shot Output Switch Programmable Limit Shutdown Mode | SOT-23-8 | 85 °C | 125 °C | -40 °C | 15 °C | 1.5 °C | 2.5 °C | 125 °C | -40 °C | ||||
Texas Instruments | SOT-23-8 | 127 °C | -40 °C | 12 b | 127 °C | -40 °C | I2C/SMBus | 2.7 V | 5.5 V | Surface Mount | One-Shot Output Switch Programmable Limit Shutdown Mode | SOT-23-8 | 125 °C | -40 °C | Automotive | 15°C ~ 85°C (-40°C ~ 125°C) 15°C ~ 85°C (-40°C ~ 125°C) | ±1.5°C ±1°C | AEC-Q100 | ||||||
Texas Instruments | SOT-23-8 | 125 °C | -40 °C | 11 b | 191 °C | -64 °C | SMBus | 2.7 V | 5.5 V | Surface Mount | One-Shot Output Switch Programmable Limit Shutdown Mode | SOT-23-8 | 85 °C | 125 °C | -40 °C | 15 °C | 1.5 °C | 2.5 °C | 125 °C | -40 °C | ||||
 Texas Instruments | SOT-23-8 | 125 °C | -40 °C | 11 b | 191 °C | -64 °C | SMBus | 2.7 V | 5.5 V | Surface Mount | One-Shot Output Switch Programmable Limit Shutdown Mode | SOT-23-8 | 85 °C | 125 °C | -40 °C | 15 °C | 1.5 °C | 2.5 °C | 125 °C | -40 °C | ||||
 Texas Instruments | 125 °C | -40 °C | 11 b | 191 °C | -64 °C | SMBus | 2.7 V | 5.5 V | Surface Mount | One-Shot Output Switch Programmable Limit Shutdown Mode | 8-DSBGA | 85 °C | 125 °C | -40 °C | 15 °C | 1.5 °C | 2.5 °C | 125 °C | -40 °C |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Tape & Reel (TR) | 3000 | $ 0.84 | |
Description
General part information
TMP421-Q1 Series
The TMP421-Q1, TMP422-Q1, and TMP423-Q1 devices are single, dual, and triple remote, automotive-qualified temperature sensor monitors with a built-in local temperature sensor. The remote temperature sensor diode-connected transistors are typically low-cost, NPN- or PNP-type transistors or diodes that are an integral part of microcontrollers, microprocessors, or field-programmable gate arrays (FPGAs).
Remote accuracy is ±1°C for multiple device manufacturers, with no calibration needed. The two-wire serial interface accepts SMBus write byte, read byte, send byte, and receive byte commands to configure the device.
The TMP421-Q1, TMP422-Q1, and TMP423-Q1 include series resistance cancellation, programmable non-ideality factor, wide remote temperature measurement range (up to +150°C), and diode fault detection.
Documents
Technical documentation and resources
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