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TMP421AIDCNT from TI,Texas Instruments

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TMP421AIDCNT

Manufacturer: TI, IR

Remote and Local Temperature Sensor with N-Factor and Series-R Correction in WCSP 8-SOT-23 -40 to 125

Partnumber Manufacturer Quantity Availability
TMP421AIDCNT TI, IR 1940 In Stock

Description and Introduction

Remote and Local Temperature Sensor with N-Factor and Series-R Correction in WCSP 8-SOT-23 -40 to 125 The TMP421AIDCNT is a temperature sensor manufactured by Texas Instruments (TI). Here are its specifications, descriptions, and features:

### **Specifications:**  
- **Manufacturer:** Texas Instruments (TI)  
- **Part Number:** TMP421AIDCNT  
- **Package:** SOT-23-8  
- **Operating Temperature Range:** -40°C to +125°C  
- **Supply Voltage Range:** 2.7V to 5.5V  
- **Accuracy:** ±1°C (max) from +60°C to +100°C  
- **Resolution:** 0.0625°C  
- **Interface:** I²C/SMBus compatible  
- **Remote Temperature Sensing:** Yes (supports external diode-connected transistor)  
- **Local Temperature Sensing:** Yes (on-chip sensor)  
- **Power Consumption:** 28µA (typical)  

### **Descriptions:**  
The TMP421AIDCNT is a high-precision digital temperature sensor with a built-in local temperature sensor and remote temperature sensing capability. It communicates via an I²C/SMBus interface and is designed for applications requiring accurate thermal monitoring, such as in computing, industrial, and consumer electronics.  

### **Features:**  
- **High Accuracy:** ±1°C (max) for local and remote sensing.  
- **Low Power Consumption:** 28µA typical operating current.  
- **Wide Supply Range:** Operates from 2.7V to 5.5V.  
- **Programmable Alert Function:** Supports overtemperature alerts.  
- **Small Form Factor:** 8-pin SOT-23 package.  
- **Compatible with Multiple Processors:** Works with diode-connected transistors for remote sensing.  

For detailed datasheet information, refer to Texas Instruments' official documentation.

Application Scenarios & Design Considerations

Remote and Local Temperature Sensor with N-Factor and Series-R Correction in WCSP 8-SOT-23 -40 to 125

Alternative Part Number

  • LM75BIMM-3 --: I2C temperature sensor with similar digital interface and accuracy, widely available and pin-compatible in function for many designs.
  • ADT7410TRZ --: High-accuracy I2C temperature sensor with comparable resolution and supply range, suitable drop-in functional replacement.
  • MCP9808T-E/MS --: I2C temperature sensor with ±0.25°C accuracy and similar register-based interface, good alternative when TI part is unavailable.
  • LM75BDP --: I2C temperature sensor with similar digital interface and accuracy, widely available and pin-compatible in function for many designs.
  • STTS751-0DP3F --: I2C/SMBus temperature sensor with similar accuracy and small package, good alternative when TMP421 is unavailable.

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