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Product Detailed Parameters
- Description：MOD TEMP SENSOR 4KB EEP 8TDFN
- Series：-
- Mfr：STMicroelectronics
- Package：Tape & Reel (TR),Cut Tape (CT)
- Function：Temp Monitoring System (Sensor), DIMM DDR Memory
- Sensor Type：Internal
- Sensing Temperature：-20°C ~ 125°C
- Accuracy：±3°C(Max)
- Topology：ADC (Sigma Delta), Register Bank
- Output Type：2-Wire Serial, I2C
- Output Alarm：Yes
- Output Fan：No
- Voltage - Supply：2.2V ~ 3.6V
- Operating Temperature：-20°C ~ 125°C
- Grade：-
- Qualification：-
- Mounting Type：Surface Mount
- Package / Case：8-WFDFN Exposed Pad
- Supplier Device Package：8-TDFN (2x3)
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Overview
The STTS2004B2DN3F is a memory module temperature sensor with integrated 4 Kb SPD EEPROM, designed for DDR4 DIMM applications in servers and mobile platforms. It complies with JEDEC TSE2004a2 specifications. The device features a programmable 9-12 bit ADC with up to 0.0625 °C resolution and typical accuracies of ±2 °C (-20 °C to 125 °C), ±1 °C (+40 °C to +125 °C), and ±0.5 °C (+75 °C to +95 °C). It operates at 2.2 V and uses an 8-lead TDFN package (2 mm x 3 mm, 0.80 mm height).
Feature Summary
- Combines thermal sensor and Serial Presence Detect EEPROM in a single compact package.
- Complies with JEDEC TSE2004a2 specification for DRAM DIMM thermal monitoring.
- Supports software-programmed shutdown mode for substantial power savings.
- Features selective data locking capabilities across four 128-byte blocks.
Applications
- DDR4 DIMM modules in server platforms.
- Desktop computer memory modules.
- Mobile personal computing platforms including laptops.
- Industrial applications requiring memory module thermal monitoring.
Procurement Notes
Verify component status as the STTS2004 series is designated NRND (Not Recommended for New Designs). Confirm availability of recommended replacement parts such as the STTS22H before procurement. Ensure design compatibility with JEDEC TSE2004a2 requirements for DDR4 DIMM implementations. Validate package dimensions against mechanical constraints for 2 mm x 3 mm TDFN footprint.
Selection Notes
Select this component for DDR4 DIMM designs requiring integrated thermal sensing and SPD storage. Consider the NRND status when initiating new designs; evaluate the STTS22H as the primary alternative. Verify voltage compatibility with 2.2 V operation. Assess accuracy requirements against the specified ranges: ±2 °C full range, ±1 °C active range, and ±0.5 °C monitor range.
Part Context
The STTS2004B2DN3F belongs to STMicroelectronics' digital temperature sensor family tailored for memory modules. It integrates a thermal sensor and 4-Kbit serial EEPROM to provide space and cost savings for DIMM manufacturers. The device supports shared bus interfaces with unique addressing for multiple devices.
Replacement Considerations
ST recommends the STTS22H as a replacement part due to the NRND status of the STTS2004 series. Verify functional compatibility and pinout alignment before substitution.
