24LC04B-E/ST

Memory IC Overview

The Microchip Technology 24LC04B-E/ST is a 4-Kbit (512 x 8) Electrically Erasable PROM (EEPROM) featuring a two-wire serial interface compatible with I²C protocols. It operates within a voltage range of 2.5V to 5.5V and supports clock frequencies up to 400 kHz, with an access time of 900 ns. The device utilizes TSSOP-8 packaging and is rated for extended industrial temperatures from -40°C to +125°C. Key electrical characteristics include a maximum standby current of 5 µA and a write cycle endurance exceeding one million cycles.

Memory IC Feature Summary

• Hardware write-protect capability via the WP pin to secure memory data
• Integrated Schmitt trigger inputs and noise filters for signal integrity
• Self-timed erase/write cycles with automatic page write buffering
• High reliability with over one million erase/write cycles and long-term data retention

Memory IC Applications

• Embedded systems requiring non-volatile parameter storage
• Industrial control units needing robust data logging
• Consumer electronics utilizing low-power memory solutions
• Automotive modules requiring extended temperature operation

Memory IC Procurement Notes

Verify the specific suffix 'E' confirms the extended temperature grade (-40°C to +125°C) and 'ST' denotes the TSSOP package. Confirm RoHS compliance status as per the latest manufacturer documentation. Ensure the design accounts for the 2.5V minimum operating voltage requirement distinct from lower-voltage variants in the same family.

Memory IC Selection Notes

Select this component when extended temperature performance is mandatory alongside standard I²C compatibility. The 24LC04B series requires a minimum supply voltage of 2.5V, distinguishing it from 1.7V capable models. The TSSOP package offers surface-mount convenience for space-constrained designs while maintaining the 4Kbit capacity required for moderate data storage needs.

Memory IC Part Context

This part belongs to the 24XX04 family of serial EEPROMs, which includes the 24AA04 and 24FC04 variants. While sharing the same physical footprint and basic interface, the 24LC04B is specifically optimized for 2.5V to 5.5V operations. The 'E' designation indicates the extended temperature range variant, whereas 'I' would denote the industrial range.

Memory IC Replacement Considerations

Direct substitutes within the same package and specification include the 24LC04B-I/ST for industrial temperature applications. Cross-family replacements like the 24AA04 or 24FC04 require verification of voltage level compatibility and clock speed requirements before implementation.