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Product Detailed Parameters
- Description：IC TEMP SENSOR 2WIRE 3V 8-DFN
- Series：-
- Mfr：Microchip Technology
- Package：Tape & Reel (TR),Cut Tape (CT)
- Function：Temp Monitoring System (Sensor), DIMM DDR Memory
- Sensor Type：Internal
- Sensing Temperature：-40°C ~ 125°C
- Accuracy：±3°C(Max)
- Topology：ADC (Sigma Delta), Register Bank
- Output Type：I2C/SMBus
- Output Alarm：Yes
- Output Fan：No
- Voltage - Supply：2.7V ~ 5.5V
- Operating Temperature：-40°C ~ 125°C
- Grade：-
- Qualification：-
- Mounting Type：Surface Mount
- Package / Case：8-VFDFN Exposed Pad
- Supplier Device Package：8-DFN (2x3)
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Overview
The MCP98243T-BE/MC is a digital temperature sensor with an integrated 2 Kbit Serial EEPROM for SPD. It meets JEDEC JC42.4-TSE2002B3 specifications and features a 2-wire I²C/SMBus interface. The device operates within a -40°C to +125°C range, offering Grade B accuracy of ±0.2°C/±1°C (typ./max.) from +75°C to +95°C. It supports a specified VDD range of 3.0V to 3.6V and an operating range of 2.7V to 5.5V. The sensor includes user-programmable registers for shutdown modes and event boundaries.
Feature Summary
- Integrated 2 Kbit Serial EEPROM designed for DRAM DIMM vendor information storage
- User-programmable temperature Event boundaries with configurable output polarity
- Permanent and reversible software write protection for the lower 1 Kbit of memory
- Compliant with JEDEC JC42.4-TSE2002B3 Memory Module Thermal Sensor Component specification
Applications
- DIMM Modules for Servers, PCs, and Laptops
- General Purpose Temperature Datalogging
Procurement Notes
Verify the specific suffix 'BE/MC' corresponds to the DFN-8 package and Grade B accuracy as documented in Microchip datasheet DS22153C. Confirm that the ordering code matches the required JEDEC compliance level. Ensure the procurement channel provides original manufacturer documentation to validate component authenticity and revision status.
Selection Notes
Select this component when both high-accuracy thermal monitoring and non-volatile data storage are required on a single serial bus. The MCP98243 integrates SPD capabilities, eliminating the need for separate EEPROM components. Consider the 8-pin DFN/TDFN/UDFN package options for space-constrained board layouts requiring exposed thermal pads.
Part Context
This part belongs to the MCP9843/98243 family of digital temperature sensors manufactured by Microchip Technology. While the MCP9843 lacks internal memory, the MCP98243 variant specifically adds a 256-byte EEPROM block. This differentiation allows the MCP98243 to fulfill dual roles in memory module applications where thermal management and identification data must coexist.
Replacement Considerations
The MCP98242 serves as a functional substitute but lacks the integrated EEPROM and offers lower I²C maximum bus frequency (100 kHz vs 400 kHz). Verify if the application requires the specific SPD data storage or higher bus speed provided by the MCP98243.
