24AA02E48T-I/OT

Memory IC Overview

The Microchip Technology 24AA02E48T-I/OT is a 2 Kbit serial EEPROM featuring a 2-wire I²C interface. It operates on a single supply voltage ranging from 1.7V to 5.5V and supports clock frequencies up to 400 kHz at VCC ≥ 2.5V, or 100 kHz for lower voltages. The device is housed in a 5-lead SOT-23 surface-mount package and functions within an industrial temperature range of -40°C to +85°C. Memory organization consists of two blocks of 128 x 8-bit cells with an 8-byte page write buffer.

Memory IC Feature Summary

• Factory-programmed globally unique 48-bit EUI-48™ node address stored in the upper half of the array
• Upper memory half (addresses 80h-FFh) is permanently write-protected while remaining data remains accessible
• Integrated Schmitt trigger inputs and output slope control to suppress noise spikes and eliminate ground bounce
• Supports acknowledge polling to determine internal write cycle completion without waiting

Memory IC Applications

• Network node identification using IEEE EUI-48™ standards
• System configuration storage requiring permanent write protection
• Low-voltage embedded systems operating down to 1.7V
• I²C bus devices requiring noise immunity in electrically noisy environments

Memory IC Procurement Notes

Verify that the specific ordering suffix matches the required temperature grade and package type. Confirm the presence of the pre-programmed EUI-48™ address if node identity is critical. Ensure the design accommodates the 5-lead SOT-23 footprint and respects the write-protected memory region during software development.

Memory IC Selection Notes

Select this component when a compact 5-lead package is preferred over the 8-lead SOIC. Choose this part specifically for applications requiring a factory-assigned EUI-48™ identifier rather than user-programmable addresses. Note that chip select pins A0-A2 are not available on this variant, limiting multi-device addressing compared to other family members.

Memory IC Part Context

This device belongs to the 24AA02XEXX family of 2 Kbit serial EEPROMs manufactured by Microchip Technology. It shares core electrical characteristics and interface protocols with variants like the 24AA025E48 and 24AA02E64, differing primarily in package options, page buffer size, and node address length.

Memory IC Replacement Considerations

Direct substitutes include the 24AA025E48T-I/OT, which offers a 16-byte page buffer but requires a 6-lead SOT-23 package. For identical 5-lead SOT-23 form factors, verify compatibility with the 24AA02E48T-E/OT if extended temperature ranges are needed.