24AA025E48T-I/SN

Memory IC Overview

The Microchip Technology 24AA025E48T-I/SN is a 2 Kbit Electrically Erasable PROM organized as two blocks of 128 x 8-bit memory. It features a 2-wire serial I2C interface with a maximum clock frequency of 400 kHz (100 kHz below 2.5V). The device operates on a single supply voltage ranging from 1.7V to 5.5V and supports industrial temperature ranges (-40°C to +85°C). It includes a 16-byte page write buffer, self-timed erase/write cycles, and pre-programmed globally unique 48-bit node addresses compliant with EUI-48 standards.

Memory IC Feature Summary

• Pre-programmed with globally unique 48-bit EUI-48 node addresses stored in the upper half of the array for permanent identification.
• Features output slope control to eliminate ground bounce and Schmitt trigger inputs for enhanced noise suppression.
• Supports up to eight devices on the same bus via chip select bits A0, A1, and A2 for address expansion.
• Includes hardware write protection for the upper half of the memory array to prevent unauthorized data modification.

Memory IC Applications

• System identification and tracking using IEEE-compliant unique node addresses
• Low-voltage embedded systems requiring non-volatile storage
• I2C bus networks requiring multiple addressable EEPROM devices

Memory IC Procurement Notes

Verify that the ordering suffix 'SN' corresponds to the 8-lead SOIC package and 'T' indicates tape and reel packaging. Confirm the 'I' suffix denotes the Industrial temperature range (-40°C to +85°C) rather than Automotive grade. Ensure the specific revision level matches the required datasheet version for timing accuracy.

Memory IC Selection Notes

Select this component when a globally unique identifier is required alongside standard data storage capabilities. The 16-byte page buffer offers higher throughput compared to 8-byte variants. Verify that the system voltage remains above 1.7V to ensure proper operation at the specified 400 kHz clock speed.

Memory IC Part Context

This part belongs to the 24AA02XEXX family, which integrates factory-programmed IEEE addresses into standard 2Kbit EEPROM structures. Unlike standard 24AA025 models, this variant permanently reserves the upper memory block for the EUI-48 address, reducing available user storage but simplifying device authentication protocols.

Memory IC Replacement Considerations

Direct substitutes include other 24AA025E48 variants with different packages or temperature ratings, such as 24AA025E48T-I/OT (SOT-23-6) or 24AA025E48-E/SN (Automotive grade). Cross-model replacements like 24AA025E64 provide 64-bit addresses instead of 48-bit.