STLM75DS2F STMicroelectronics Integrated Circuit (Small Outline Packages) In Stock
STLM75DS2F is a 9-bit I2C digital temperature sensor with ±3 °C accuracy and an integrated thermal watchdog for over-temperature protection. It operates from 2.7 V to 5.5 V and communicates over a 2-wire I2C bus in an 8-pin MSOP package. Available from stock worldwide with fast shipping.
- Manufacturer
- STMicroelectronics
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- OBSOLETE
- Datasheet
- STLM75DS2F Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.2680(MOQ 10)
- Temp Range
- -55.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of STLM75DS2F?
- 9-bit I2C digital temperature output with ±3 °C accuracy over -55 °C to 125 °C range
- Integrated programmable thermal watchdog triggers an OS/INT alert without MCU polling
- 2.7 V to 5.5 V supply range in a compact 8-pin MSOP package for space-constrained boards
What is STLM75DS2F used for?
The STLM75DS2F is suitable for system thermal management in server boards, industrial controllers, and battery chargers where continuous I2C temperature monitoring is required. Its programmable over-temperature and hysteresis registers let designers set trip points for fan control or load-shedding without firmware intervention, reducing MCU interrupt overhead. The 8-pin MSOP footprint fits easily alongside other peripherals on a densely populated PCB.
What are the specifications of STLM75DS2F?
| Factory Lead Time | 20Weeks |
| YTEOL | 0 |
| Accuracy-Max (Cel) | 3Cel |
| Additional Feature | CMOS COMPATIBLE, THERMAL WATCHDOG |
| Body Breadth | 3.8mm |
| Body Height | 1.75mm |
| Body Length or Diameter | 4.8mm |
| Housing | PLASTIC |
| JESD-609 Code | e3 |
| Mounting Feature | SURFACE MOUNT |
| Number of Bits | 9 |
| Operating Current-Max | 0.15mA |
| Output Interface Type | 2-WIRE INTERFACE |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP8,.19 |
| Package Shape/Style | RECTANGULAR |
| Sensors/Transducers Type | TEMPERATURE SENSOR,SWITCH/DIGITAL OUTPUT,SERIAL |
| Supply Voltage-Max | 5.5V |
| Supply Voltage-Min | 2.7V |
| Surface Mount | YES |
| Technology | CMOS |
| Terminal Finish | Matte Tin (Sn) - annealed |
| Termination Type | SOLDER |
| ## STLM75DS2F Alternates Showing results | Image |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| Country of Origin | Malaysia |
Where can I find the STLM75DS2F datasheet?
STLM75DS2F Datasheet DownloadOfficial datasheet from STMicroelectronics
What are equivalent replacements for STLM75DS2F?
Compatible alternatives and drop-in replacements for STLM75DS2F:
Switch/Digital Sensor, 9 Bit(s), 3Cel, CMOS, Rectangular, 8 Pin, Surface Mount
Switch/Digital Sensor, 9 Bit(s), 3Cel, CMOS, Rectangular, 8 Pin, Surface Mount
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Frequently Asked Questions
How precise is the STLM75DS2F temperature measurement across the industrial temperature range?
The STLM75DS2F provides 9-bit resolution corresponding to 0.5 °C steps, with a maximum accuracy of ±3 °C over the full -55 °C to 125 °C range. For typical room-temperature applications from 0 °C to 70 °C, accuracy is better than ±2 °C, which is sufficient for fan-speed control, thermal throttling, and ambient environment monitoring in industrial and consumer electronics.
How does the STLM75DS2F thermal watchdog function without continuous MCU polling?
The STLM75DS2F has two programmable 9-bit registers — T_OS (over-temperature set point) and T_HYST (hysteresis) — that define the trip window. When the measured temperature exceeds T_OS, the OS/INT output pin asserts automatically via hardware, alerting the MCU through an interrupt line. This hardware-driven watchdog allows the microcontroller to remain in sleep mode and wake only on a genuine thermal event, saving power in battery-operated systems.
How many STLM75DS2F sensors can share the same I2C bus in a multi-zone temperature monitoring system?
The STLM75DS2F supports 3 address-select pins (A0, A1, A2), providing up to 8 unique 7-bit I2C addresses on a single 2-wire bus. This allows a single MCU with one I2C port to read temperature from 8 independent zones — for example, 8 board locations on a server motherboard — without additional multiplexers or separate bus segments.
What supply voltage does the STLM75DS2F require and is it compatible with 3.3 V microcontroller systems?
The STLM75DS2F operates from 2.7 V to 5.5 V, which includes the 3.3 V rail commonly used with ARM Cortex-M and other modern microcontrollers. At 3.3 V the I2C logic levels are fully compatible with standard 3.3 V GPIO without level-shifting, simplifying integration and reducing external component count in low-cost embedded temperature monitoring designs.
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About STMicroelectronics
STMicroelectronics is a global semiconductor leader serving customers across the spectrum of electronics applications. ST's products are found in a wide range of applications including automotive, industrial, personal electronics, and communications.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 10+ | $0.2950 | $2.95 |
| 100+ | $0.2810 | $28.10 |
| 500+ | $0.2680 | $134.00 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“Their engineering team helped us find a pin-compatible alternative when our original MCU went EOL.”
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