24LC64FT-E/ST

Memory IC Overview

The Microchip Technology 24LC64FT-E/ST is a 64-Kbit (8K x 8) serial EEPROM utilizing an I²C-compatible Two-Wire interface. It operates within a supply voltage range of 2.5V to 5.5V and supports clock frequencies up to 400 kHz. The device features a 32-byte page write buffer, self-timed erase/write cycles with a maximum duration of 5 ms, and hardware write protection for the upper quarter of the array. It is housed in an 8-lead TSSOP package and rated for extended industrial temperatures from -40°C to +125°C.

Memory IC Feature Summary

• Hardware write protection for the upper quarter of the memory array via the WP pin
• Supports cascading up to eight devices on the same bus using three address pins
• Includes Schmitt trigger inputs and output slope control for noise suppression and ground bounce elimination

Memory IC Applications

• Low-power data acquisition systems requiring non-volatile storage
• Personal communication devices needing configuration parameter retention
• Embedded systems utilizing I²C bus architecture for memory expansion

Memory IC Procurement Notes

Verify that the ordering suffix 'T' corresponds to tape-and-reel packaging rather than tube packaging when sourcing components. Confirm the 'E' suffix indicates the extended temperature grade (-40°C to +125°C). Ensure the specific lot date code meets project requirements as manufacturing sites may vary.

Memory IC Selection Notes

Select this component for applications requiring byte-level random access without block erasure constraints. The 2.5V minimum operating voltage distinguishes it from lower-voltage variants like the 24AA64F. The TSSOP package is suitable for surface-mount assembly where space efficiency is prioritized over through-hole robustness.

Memory IC Part Context

This part belongs to the 24XX64F family, which includes the 24AA64F and 24FC64F variants. While sharing the same 64-Kbit capacity and I²C interface, the 24LC64F series is specifically optimized for 2.5V operation, whereas other family members support lower voltages or higher clock speeds.

Memory IC Replacement Considerations

Direct functional substitutes include the 24LC64F-I/ST for industrial temperature ranges and the 24LC64F-E/MY for MSOP packaging. Cross-family replacements like the 24AA64F require verification of voltage compatibility.