24LC025/ST

Memory IC Overview

The Microchip Technology 24LC025T-E/ST is a 2 Kbit (256 x 8) serial EEPROM utilizing an I²C-compatible 2-wire interface. It operates on a single supply voltage ranging from 2.5V to 5.5V with a maximum clock frequency of 400 kHz and typical access time of 900 ns. The device features industrial temperature range operation (-40°C to +125°C), hardware write protection, and over 1 million erase/write cycles with data retention exceeding 200 years.

Memory IC Feature Summary

• Supports cascading up to eight devices on the same bus for contiguous memory expansion
• Includes Schmitt trigger inputs and output slope control for noise suppression and ground bounce elimination
• Features a 16-byte page write buffer for efficient data transfer

Memory IC Applications

• Industrial control systems requiring non-volatile parameter storage
• Automotive electronics operating in extended temperature environments
• Embedded systems needing low-power configuration memory

Memory IC Procurement Notes

Verify that the specific ordering suffix matches the required package type and temperature grade. Confirm the 'E' designation corresponds to the automotive temperature range (-40°C to +125°C) as specified in the datasheet. Ensure compatibility with the system's I²C bus voltage levels and check for any recent Product Change Notifications regarding assembly or marking updates.

Memory IC Selection Notes

Select this component when an I²C interface is required for small-scale non-volatile storage in harsh environments. The 24LC025 variant lacks the hardware write-protect pin found in the 24LC024; therefore, software-based protection must be implemented if write security is critical. Verify that the 2.5V minimum supply voltage aligns with the target application's power rails.

Memory IC Part Context

This part belongs to the 24AA024/24LC024/24AA025/24LC025 family of 2Kb Serial Electrically Erasable PROMs. The 24LC series specifically requires a minimum supply voltage of 2.5V, distinguishing it from the 24AA series which supports lower voltages down to 1.7V. The 'T' suffix indicates tape and reel packaging, while '/ST' denotes the TSSOP package option.

Memory IC Replacement Considerations

The 24LC024 offers identical electrical characteristics but includes a hardware write-protect pin. For applications requiring lower voltage operation, the 24AA025 provides similar functionality with a 1.7V minimum supply.