24AA025E48-E/SN

Memory IC Overview

The Microchip Technology 24AA025E48-E/SN is a 2 Kbit Electrically Erasable PROM organized as two blocks of 128 x 8-bit memory. It features a 2-wire I2C compatible serial 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 an extended temperature range of -40°C to +125°C. It includes a 16-byte page write buffer, Schmitt trigger inputs for noise suppression, and output slope control. Factory pre-programmed globally unique EUI-48 node addresses are stored in the upper half of the array.

Memory IC Feature Summary

• Factory pre-programmed with globally unique 48-bit EUI-48 node addresses stored in the permanently write-protected upper half of the memory array.
• Supports low-voltage operation down to 1.7V with low standby current consumption suitable for power-sensitive applications.
• Includes hardware protection features such as Schmitt trigger inputs for noise suppression and output slope control to eliminate ground bounce.
• Features a 16-byte page write buffer that allows efficient data transfer by storing multiple bytes before initiating an internal write cycle.

Memory IC Applications

• Network node identification in systems requiring IEEE EUI-48 compliance
• Low-power embedded devices operating on minimal supply voltages
• Industrial equipment requiring reliable data retention across extended temperature ranges

Memory IC Procurement Notes

Verify the specific ordering suffix 'E' confirms the automotive-grade extended temperature rating (-40°C to +125°C) rather than the industrial grade. Confirm the 'SN' suffix corresponds to the 8-lead SOIC package. Ensure the part number matches the EUI-48 variant, distinct from the EUI-64 version, to guarantee correct factory programming of the node address.

Memory IC Selection Notes

Select this component when a unique hardware identifier is required for network addressing without software configuration. Choose the E-series for environments exceeding standard industrial temperatures. The 8-lead SOIC package is suitable for through-hole or surface mount designs requiring wider pin spacing compared to SOT-23 options.

Memory IC Part Context

This device belongs to the 24AA02XEXX family of 2 Kbit serial EEPROMs. It shares core electrical characteristics with the 24AA02E48, 24AA02E64, and 24AA025E64 models. The primary distinction lies in the pre-programmed node address format (EUI-48 vs. EUI-64) and the page write buffer size (8-byte vs. 16-byte).

Memory IC Replacement Considerations

The 24AA025E48-I/SN serves as a functional substitute if the extended temperature rating is not required. The 24AA025E64-E/SN is compatible if the system utilizes EUI-64 addressing standards instead of EUI-48.

Memory IC FAQ

Is the pre-programmed EUI-48 address writable?

No, the upper half of the array containing the EUI-48 node address is permanently write-protected by factory design.

How does the device handle bus noise?

The SCL and SDA inputs utilize Schmitt Trigger circuits and filter circuits to suppress noise spikes, ensuring proper operation on noisy buses.