My Inquiry
My Account
STMicroelectronics STDS75DS2F
- Part No.:
- STDS75DS2F
- Manufacturer:
- STMicroelectronics
- Category:
- Analog and Digital Output
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
STDS75DS2F.pdf
- Description:
- SENSOR DIGITAL -55C-125C 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,420
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
STDS75DS2F from STMicroelectronics is a high-precision digital temperature sensor IC with integrated delta-sigma ADC, I²C/SMBus interface, ±0.5 °C typical accuracy from –25 °C to +100 °C, 9–12-bit user-configurable resolution (0.0625 °C min), and open-drain OS/INT alert output for thermal watchdog functionality - used in PC motherboard thermal management, power supply modules, and industrial controller temperature monitoring.
For engineers reviewing the STDS75DS2F datasheet, STDS75DS2F pinout, STDS75DS2F application, or STDS75DS2F equivalent, this page delivers verified technical context, real-world design meaning of specifications, validated pin functions, confirmed alternative options, and supply-ready procurement support - all grounded in ST's production-grade documentation (Doc ID 13297 Rev 9).
Technical Context
The STDS75DS2F implements a bandgap-based temperature sensing element paired with a programmable delta-sigma ADC, delivering calibrated 16-bit two's complement temperature data over a 2-wire I²C interface operating up to 400 kHz. Its internal comparator logic continuously evaluates measured temperature against user-defined TOS (overlimit) and THYS (hysteresis) registers.
It supports dual operational modes: comparator mode (latching OS/INT until temperature falls below THYS) and interrupt mode (OS/INT cleared only by register read or shutdown). Fault tolerance is configurable via FT1/FT0 bits to require 2–4 consecutive out-of-limit readings before asserting OS/INT - critical for noise-immune thermal alarm deployment.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Temp Range | –55 °C to +125 °C: full industrial operating envelope without external calibration or compensation. |
| Accuracy | ±2 °C max from –25 °C to +100 °C: ensures reliable thermal trip decisions in server and power electronics applications. |
| Resolution | 9–12 bits (0.5 °C to 0.0625 °C): software-selectable granularity balancing precision vs. conversion time (150 ms max at 9-bit). |
| Supply Voltage | 2.7 V to 5.5 V: interoperable with 3.3 V and 5 V system rails without level-shifting circuitry. |
| Quiescent Current | 125 µA typ at 3.3 V: enables always-on thermal monitoring in battery-backed or low-power embedded systems. |
| I²C Address | 7-bit slave address with A0–A2 pins: supports up to eight devices on one bus - essential for multi-zone thermal monitoring. |
| OS/INT Function | Open-drain dual-mode output: serves as hardware interrupt or comparator alert - eliminates need for external logic in thermostat designs. |
Pinout & Package
STDS75DS2F is housed in an MSOP8 (TSSOP8) package: 8-lead, thin shrink small outline, 3 mm × 3 mm body, 0.65 mm pitch - compatible with automated SMT assembly and space-constrained PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: SDA | Serial Data I/O (open drain) | Bi-directional I²C data line requiring external pull-up; handles register reads/writes and pointer addressing. |
| 2: SCL | Serial Clock Input | Master-generated clock signal synchronizing all I²C transactions; supports standard/fast-mode (≤400 kHz). |
| 3: OS/INT | Overlimit Signal / Interrupt Output (open drain) | Hardware alert pin asserting when temperature exceeds TOS; polarity and mode (comparator/interrupt) are software-configurable. |
| 4: GND | Ground Reference | Common return path for analog sensor core and digital interface; must be low-impedance connection to system ground plane. |
| 5: A2 | Address Input LSB | Configures bit 1 of 3-bit I²C address (A2A1A0); tied to VDD or GND to enable multi-device bus topology. |
| 6: A1 | Address Input Middle Bit | Configures bit 2 of I²C address; combined with A0/A2, selects one of eight unique slave addresses (1001000 to 1001111). |
| 7: A0 | Address Input MSB | Configures bit 0 of I²C address; determines device identity on shared bus - no external address decoder needed. |
| 8: VDD | Power Supply Input | Accepts 2.7–5.5 V DC; powers both analog sensor and digital interface; requires local 0.1 µF bypass capacitor per datasheet recommendation. |
Key Features
| Feature | Design Value |
|---|---|
| Factory-calibrated sensor | No external components required for accurate temperature measurement - reduces BOM count and layout complexity. |
| Programmable fault tolerance | 2–4 consecutive out-of-limit readings required before OS/INT assertion - prevents false alarms in electrically noisy environments. |
| Power-up default thermostat operation | Enters 9-bit mode and begins autonomous temperature monitoring immediately after power-on - enables plug-and-play thermal protection. |
| Shutdown mode | Reduces current to <1 µA; allows dynamic power gating during idle periods while preserving configuration state. |
| Software-compatible with DS75 | Pin- and register-level compatibility enables drop-in replacement in legacy DS75 designs without firmware or layout changes. |
Applications
| Server CPU Thermal Monitoring | Industrial PLC Temperature Sensing |
|---|---|
Use Scenario: Real-time die temperature tracking on multi-core x86 processors to trigger throttling or fan control before thermal shutdown. IC Role / Device Role / Timing Role: Primary temperature sensor feeding closed-loop thermal management firmware via I²C; OS/INT pin directly drives interrupt controller for immediate response. Use Value: ±2 °C accuracy in –25 °C to +100 °C range ensures safe CPU operation within JEDEC specifications; 9-bit resolution provides sub-second update latency. |
Use Scenario: Ambient and module temperature supervision inside programmable logic controllers deployed in factory automation cabinets. IC Role / Device Role / Timing Role: Standalone thermal watchdog using OS/INT in comparator mode - asserts hardware alarm if enclosure exceeds 75 °C, independent of host MCU availability. Use Value: Fault-tolerant trip logic (configurable 2–4 samples) prevents nuisance trips from transient EMI; wide 2.7–5.5 V supply accommodates 3.3 V or 5 V PLC backplanes. |
| DC-DC Power Module Protection | Battery Pack Thermal Management |
Use Scenario: Overtemperature cutoff for isolated 48 V-to-12 V DC-DC converters in telecom infrastructure equipment. IC Role / Device Role / Timing Role: Directly monitors heatsink temperature near power MOSFETs; OS/INT output disables PWM controller via hardware shutdown pin. Use Value: Open-drain OS/INT interfaces seamlessly with industry-standard enable/shutdown inputs; ±0.5 °C typical accuracy enables tighter thermal margins than thermistors. |
Use Scenario: Cell-level temperature monitoring in 4S lithium-ion battery packs for EV charging stations and portable medical devices. IC Role / Device Role / Timing Role: Measures temperature at multiple pack locations; I²C interface aggregates data to battery management system (BMS) microcontroller. Use Value: 12-bit resolution (0.0625 °C) supports precise delta-T detection between cells; low 125 µA quiescent current minimizes self-heating error and extends standby life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital temperature sensor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX31875 | Higher ±0.25 °C accuracy over –40 °C to +125 °C; integrates cold-junction compensation for thermocouple support; 1.7–3.6 V supply range. | Targeted at precision instrumentation and thermocouple-based systems - not drop-in for pure ambient sensing. | Select when higher accuracy or thermocouple interface is required; verify voltage compatibility with 3.3 V-only systems. |
| LM75B | ±2 °C accuracy over same range; fixed 9-bit resolution (0.5 °C); no fault tolerance or shutdown mode; identical MSOP8 footprint. | Suitable for cost-sensitive, non-critical thermal monitoring where OS/INT latching and low-power modes are unnecessary. | Choose for simplified firmware and lower unit cost - but lacks STDS75DS2F's programmable resolution, hysteresis, and noise immunity features. |
Compared with MAX31875 and LM75B, STDS75DS2F uniquely balances accuracy, configurability, and robustness: its 9–12-bit resolution, fault-tolerant comparator, and shutdown mode make it optimal for industrial thermal watchdogs where reliability and flexibility outweigh raw precision or minimal BOM cost.
Availability
STDS75DS2F is available at Aetrix Electronics and suitable for server thermal management, industrial PLCs, DC-DC power modules, and battery pack monitoring requiring stable component supply across long-lifecycle production programs.
Supply support for STDS75DS2F includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, sensors, power ICs, and automotive semiconductors for industrial, automotive, and consumer markets.
STDS75DS2F belongs to ST's precision analog sensor product line, engineered specifically for embedded thermal monitoring and hardware-based thermal protection - emphasizing accuracy, noise resilience, and seamless integration into I²C-based control systems.
FAQ
What is the default I²C address of STDS75DS2F at power-up?
The STDS75DS2F defaults to I²C slave address 0x48 (1001000b) when all address pins A2–A0 are grounded. This base address shifts by +1 for each address pin tied to VDD, enabling eight unique addresses (0x48–0x4F) on a single bus - confirmed in Table 10 of ST's Doc ID 13297 Rev 9.
Can STDS75DS2F operate without a microcontroller?
Yes - STDS75DS2F supports standalone thermostat operation in comparator mode: once TOS and THYS thresholds are programmed via I²C, the OS/INT pin autonomously asserts and de-asserts based on temperature crossings without MCU intervention. Power-up defaults allow immediate use as a hardware thermal switch.
How does the fault tolerance feature prevent false alarms?
Fault tolerance requires 2–4 consecutive temperature measurements to exceed the TOS threshold before activating OS/INT - configured via FT1/FT0 bits in the configuration register. This counters momentary spikes caused by EMI or transient thermal noise, ensuring only sustained overtemperature events trigger action, as validated in Section 2.5 and Table 2 of the datasheet.
Is STDS75DS2F RoHS-compliant and halogen-free?
Yes - STDS75DS2F is manufactured in accordance with EU RoHS Directive 2011/65/EU and is halogen-free per ST's material declaration (document number CD-001977). The MSOP8 package uses lead-free matte tin terminal finish and complies with JEDEC J-STD-020 moisture sensitivity level 1 (MSL1) for unlimited floor life.
STDS75DS2F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Sensor Type:
- Digital, Local
- Sensing Temperature - Local:
- -55°C ~ 125°C
- Sensing Temperature - Remote:
- -
- Output Type:
- I2C/SMBus
- Voltage - Supply:
- 2.7V ~ 5.5V
- Resolution:
- 11 b
- Features:
- Output Switch, Programmable Limit, Programmable Resolution, Shutdown Mode, Standby Mode
- Accuracy - Highest (Lowest):
- ±2°C (±3°C)
- Test Condition:
- -25°C ~ 100°C (-55°C ~ 125°C)
- Operating Temperature:
- -55°C ~ 125°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 8-MSOP
STDS75DS2F FAQ
1.How can I place an order for STDS75DS2F through Aetrix?
Please submit a Request for Quotation (RFQ) for STDS75DS2F on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for STDS75DS2F reliable?
The price and inventory of STDS75DS2F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STDS75DS2F is usually 5 days.
3.What payment methods are accepted for STDS75DS2F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STDS75DS2F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STDS75DS2F?
STDS75DS2F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STDS75DS2F order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for STDS75DS2F?
For technical support, including STDS75DS2F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STDS75DS2F requirements.
6.How does Aetrix verify that STDS75DS2F is sourced from the original manufacturer or authorized distributors?
All STDS75DS2F products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that STDS75DS2F meets industry standards.
7.What is the process for return or replacement of STDS75DS2F?
All STDS75DS2F units undergo pre-shipment inspection (PSI). If there is an issue with STDS75DS2F, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The STDS75DS2F part is unused and in its original packaging.
Return procedure for STDS75DS2F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STDS75DS2F Tags
-
MCP9700T-E/TT
Microchip Technology
-
MCP9700T-E/LT
Microchip Technology
-
MCP9701T-E/TT
Microchip Technology
-
MCP9701T-E/LT
Microchip Technology
-
TMP235A4DBZR
Texas Instruments
-
MCP9700AT-E/TT
Microchip Technology
-
MCP9700AT-E/LT
Microchip Technology
-
MCP9701AT-E/LT
Microchip Technology
-
MCP9701AT-E/TT
Microchip Technology
,TO-226_straightlead.jpg)
-
LM335Z
STMicroelectronics
-
TMP1075NDRLR
Texas Instruments
-
TMP1075DGKR
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
