TC74A5-3.3VCTTR Microchip Integrated Circuit (SOT23 (5-Pin)) In Stock
Microchip TC74A5-3.3VCTTR is a serial digital temperature sensor powered from a 3.3 V supply, providing 8-bit temperature data via I2C interface with address 0x4D in a compact 5-pin SOT-23 package. It measures temperatures from -40°C to +125°C, making it ideal for thermal management in embedded systems and consumer electronics.
- Manufacturer
- Microchip
- Package
- SOT23 (5-Pin)
- Pin Count
- 5
- Lifecycle
- ACTIVE
- Datasheet
- TC74A5-3.3VCTTR Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.8683(MOQ 1)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 8-bit temperature resolution via I2C (SMBus-compatible) interface
- Fixed 3.3 V supply operation for direct MCU integration
- -40°C to +125°C operating temperature range
- Unique I2C address 0x4D allows multi-sensor bus topologies
- 5-pin SOT-23 compact SMD package minimizing PCB area
- Low quiescent current for battery-powered and standby applications
Applications
The TC74A5-3.3VCTTR is used in embedded thermal management systems, laptop thermal protection circuits, and industrial control panels where accurate board-level temperature monitoring via I2C bus is required. Its 3.3 V supply compatibility and tiny SOT-23-5 footprint also make it popular in handheld consumer devices, smart home appliances, and battery-powered IoT sensor nodes.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | SOT-23-5 |
| Factory Lead Time | 18Weeks |
| YTEOL | 8 |
| Analog IC - Other Type | ANALOG CIRCUIT |
| JESD-30 Code | R-PDSO-G5 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSOP5/6,.11,37 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, LOW PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 2.7V |
| Supply Voltage-Nom (Vsup) | 3.3V |
| Surface Mount | YES |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.95mm |
| Terminal Position | DUAL |
| Package | SOT23 (5-Pin) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Thailand |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What I2C address does TC74A5-3.3VCTTR use, and how does that affect multi-sensor designs?
TC74A5-3.3VCTTR has a factory-fixed I2C address of 0x4D. In multi-sensor designs each TC74 variant carries a unique address from 0x48 to 0x4F, allowing up to 8 sensors on a single 2-wire I2C bus without address collisions.
Over what temperature range does TC74A5-3.3VCTTR provide valid readings?
TC74A5-3.3VCTTR delivers valid 8-bit temperature data from -40°C to +125°C. The sensor accuracy is ±2°C across most of that range, making it adequate for thermal shutdown protection and fan-speed control loops.
How does the SOT-23-5 package of TC74A5-3.3VCTTR affect PCB layout for thermal sensing applications?
The 5-pin SOT-23 body is approximately 1.6 mm × 2.9 mm, placing the sensing die very close to the monitored component when soldered nearby. Minimizing copper pour between the sensor and heat source improves thermal coupling and measurement responsiveness.
Is TC74A5-3.3VCTTR RoHS-compliant and lead-free for use in modern consumer electronics production?
Yes. TC74A5-3.3VCTTR carries a Pb-free JESD-609 code e3, confirming RoHS compliance and MSL 3 moisture sensitivity. This satisfies lead-free manufacturing requirements for CE, FCC, and international consumer electronics markets.
Related Guides
How to Choose a BAS70 Schottky Diode for Signal Clamping: Selection Guide
A practical BAS70KFILM and BAS70-family Schottky diode selection guide for signal clamping, RF detection, leakage, and topology choices.
Jul 4, 2026
AMC1202DWVR Design Guide for Isolated Current Sensing
Practical AMC1202DWVR design guide covering shunt sizing, isolation layout, input filtering, ADC scaling, and sourcing choices.
Jul 4, 2026
1206 100 uF MLCC Design Guide for Compact Bulk Decoupling
Design guidance for applying CL31A107MQHNNNE and related 1206 MLCCs in compact bulk decoupling networks.
Jul 3, 2026
0402 10 nF MLCC Design Guide for High-Speed Decoupling
Practical design guidance for using CL05B103KB5NNNC and related 0402 MLCCs in high-speed decoupling networks.
Jul 3, 2026
Why Buy from FindMyChip
About Microchip
Microchip is a leading electronic component manufacturer. FindMyChip sources Microchip ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $1.1477 | $1.15 |
| 25+ | $0.9581 | $23.95 |
| 100+ | $0.8683 | $86.83 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“Response time is incredible — usually under 4 hours. They understand that production lines can't wait.”