MCP98243T-BE/MUY

Thermal Management Overview

The MCP98243T-BE/MUY is a digital temperature sensor with an integrated 2 Kbit Serial EEPROM for SPD. It operates within a -40°C to +125°C range and meets JEDEC JC42.4-TSE2002B3 specifications. The device features Grade B accuracy of ±0.2°C/±1°C (typical/max) from +75°C to +95°C, and ±1°C/±3°C (typical/max) from -20°C to +125°C. It utilizes a 2-wire I²C/SMBus interface with a maximum bus frequency of 400 kHz. Power supply ranges are 3.0V to 3.6V for the sensor and 1.8V to 5.5V for the EEPROM. It is housed in an 8-UDFN package.

Thermal Management Feature Summary

• Integrated 2 Kbit Serial EEPROM designed for DRAM DIMM Serial Presence Detect applications
• User-programmable registers for configurable shutdown modes and temperature event boundaries
• Open-drain Event output pin supporting active-low or active-high thermostat and interrupt configurations
• Permanent and reversible software write protection mechanisms for stored vendor data

Thermal Management Applications

• DIMM modules for servers, PCs, and laptops
• General purpose temperature datalogging
• Memory module thermal monitoring systems

Thermal Management Procurement Notes

Verify the specific suffix MUY corresponds to the UDFN-8 package variant when sourcing. Confirm that the component meets the required JEDEC JC42.4-TSE2002B3 specification for your application. Ensure the host controller supports the specified I²C timing parameters and voltage levels for reliable communication.

Thermal Management Selection Notes

Select this component if SPD storage capability is required alongside temperature sensing. Compare against the MCP9843 if EEPROM functionality is unnecessary. Verify that the system power rails align with the specified operating ranges for both the sensor and EEPROM sections. Check address pin configurations to ensure unique addressing on the I²C bus.

Thermal Management Part Context

This part belongs to the MCP9843/98243 family of digital temperature sensors manufactured by Microchip Technology. The MCP98243 variant specifically includes the onboard EEPROM, distinguishing it from the standard MCP9843 model. Both share identical thermal sensing architectures and register sets.

Thermal Management Replacement Considerations

The MCP98242 is a related variant but lacks the EEPROM and has different electrical characteristics. Substitution requires verifying compatibility with the target memory module's SPD requirements and ensuring the absence of necessary EEPROM functions.