MCP98243-BE/ST

Overview

The MCP98243-BE/ST 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. Accuracy is ±0.2°C typical (±1°C max) from +75°C to +95°C, and ±0.5°C typical (±2°C max) from +40°C to +125°C. The specified VDD range is 3.0V to 3.6V, while the operating range extends from 2.7V to 5.5V. The device uses a 2-wire I²C/SMBus interface.

Feature Summary

• Integrated 2 Kbit Serial EEPROM for memory module vendor information storage
• User-programmable registers for shutdown modes and event boundaries
• Open-drain Event output configurable as comparator or interrupt
• Permanent and reversible software write protection for lower 1 Kbit

Applications

• DIMM Modules for Servers, PCs, and Laptops
• General Purpose Temperature Datalogging

Procurement Notes

Verify the specific suffix BE/ST corresponds to the TSSOP-8 package variant. Confirm that the ordering code matches the manufacturer's current datasheet revision DS22153C. Ensure compatibility with the required JEDEC specification level for your application.

Selection Notes

Select this component when SPD data storage is required alongside thermal monitoring. The TSSOP-8 package suits surface mount designs. Verify voltage levels align with the 3.0V to 3.6V specified range for optimal accuracy performance.

Part Context

This part belongs to the MCP9843/98243 family of digital temperature sensors. It shares features with the MCP9843 but adds internal EEPROM specifically designed for DRAM DIMM Serial Presence Detect applications.

Replacement Considerations

MCP9843-BE/ST lacks the EEPROM functionality. MCP98242 offers similar sensing but differs in I2C timeout ranges and bus frequency capabilities.