| Allicdata Part #: | TC74A5-3.3VAT-ND |
| Manufacturer Part#: |
TC74A5-3.3VAT |
| Price: | $ 0.98 |
| Product Category: | Sensors, Transducers |
| Manufacturer: | Microchip Technology |
| Short Description: | SENSOR TEMP I2C/SMBUS TO220-5 |
| More Detail: | Temperature Sensor Digital, Local -40°C ~ 125°C 7 ... |
| DataSheet: |  TC74A5-3.3VAT Datasheet/PDF |
| Quantity: | 612 |
| 1 +: | $ 0.88830 |
| 25 +: | $ 0.73987 |
| Series: | -- |
| Packaging: | Tube |
| Part Status: | Active |
| Sensor Type: | Digital, Local |
| Sensing Temperature - Local: | -40°C ~ 125°C |
| Sensing Temperature - Remote: | -- |
| Output Type: | I²C/SMBus |
| Voltage - Supply: | 2.7 V ~ 5.5 V |
| Resolution: | 7 b |
| Features: | Standby Mode |
| Accuracy - Highest (Lowest): | ±2°C (±3°C) |
| Test Condition: | 25°C ~ 85°C (0°C ~ 125°C) |
| Operating Temperature: | -40°C ~ 125°C |
| Mounting Type: | Through Hole |
| Package / Case: | TO-220-5 |
| Supplier Device Package: | TO-220-5 |
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Temperature sensors are an important class of electronic components which have been designed for the purpose of measuring ambient, object, and liquid temperatures. One of the most extensively used temperature sensors is the TC74A5-3.3VAT. In this article, we will discuss the application field and working principle of this device.
Application Field
A TC74A5-3.3VAT temperature sensor is used to measure temperature in applications where precision and reliability are required. It is designed to detect temperature changes of up to 3 degrees Celsius and is especially useful in environments where the temperature fluctuates rapidly. It is also widely used in HVAC/R equipment, automotive systems, medical equipments, and other temperature-sensitive industries.
Working Principle
The TC74A5-3.3VAT temperature sensor is a thermistor-type digital output temperature sensor. It consists of a sensitive NTC thermistor. When the temperature changes, the resistance of the thermistor changes as well. This change in resistance is used to determine the temperature.
The device has two operating modes: single-ended and differential. In single-ended mode, the thermistor acts as a resistor, and the output voltage is proportional to the temperature. In differential mode, two thermistors are used and the difference in resistance between the two is used to measure the temperature. This allows the device to detect temperature changes of up to 3 °C.
The device utilizes an I2C interface, which allows it to be connected to microcontrollers or other digital circuits. It can output up to 8-bit data resolution and is power efficient. The device also features an overtemperature alert pin, which can be connected to an interrupt pin on a microcontroller.
Conclusion
In conclusion, the TC74A5-3.3VAT is an advanced and reliable digital output temperature sensor. Its two operating modes, single-ended and differential, enable it to detect precise temperature changes of up to 3 °C. The device can be easily connected to a microcontroller or other digital circuits via its I2C interface, and its power efficiency allows it to be used in a wide variety of applications.
The specific data is subject to PDF, and the above content is for reference
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