24LC04B-I/SN

Memory IC Overview

The Microchip Technology 24LC04B-I/SN is a 4-Kbit Electrically Erasable PROM (EEPROM) organized as two blocks of 256 x 8-bit memory. It operates with a supply voltage range of 2.5V to 5.5V and supports a maximum clock frequency of 400 kHz via a Two-Wire Serial Interface compatible with I²C. The device features an access time of 900 ns, a page write time of 5 ms maximum, and operates within an industrial temperature range of -40°C to +85°C.

Memory IC Feature Summary

• Two-wire serial interface compatible with I²C protocol
• Hardware write-protect capability via the WP pin
• 16-byte page write buffer for efficient data transfer
• Schmitt trigger inputs for noise suppression

Memory IC Applications

• Embedded systems requiring non-volatile data storage
• Industrial control applications operating in wide temperature ranges
• Low-power consumer electronics utilizing I²C communication
• Device configuration and calibration data retention

Memory IC Procurement Notes

Verify that the ordering suffix 'I' confirms the industrial temperature grade (-40°C to +85°C) and 'SN' specifies the 8-lead SOIC package. Confirm the specific voltage rating matches the 24LC04B variant (2.5V minimum) rather than the 24AA04 or 24FC04 series. Ensure compatibility with the host system's I²C bus voltage levels and pull-up requirements before integration.

Memory IC Selection Notes

Select this component when a 4-Kbit capacity is required with strict I²C compatibility and industrial temperature resilience. The 24LC04B is distinct from the 24AA04 due to its higher minimum operating voltage of 2.5V. Choose the SOIC package for surface-mount assembly needs. Consider the 16-byte page buffer for optimizing write throughput in applications involving frequent small data updates.

Memory IC Part Context

This part belongs to the 24XX04 family of serial EEPROMs manufactured by Microchip Technology. The family includes variants like the 24AA04 and 24FC04, which differ primarily in operating voltage and maximum clock speed. The 24LC04B specifically targets applications requiring reliable operation at voltages starting from 2.5V, distinguishing it from lower-voltage alternatives within the same architectural lineage.

Memory IC Replacement Considerations

Direct substitutes include other 24LC04B variants with different packages such as 24LC04B-I/ST (TSSOP) or 24LC04B-I/P (PDIP). Cross-family replacements like the 24AA04 require verification of the 1.7V vs 2.5V minimum voltage constraint. The 24FC04 offers faster speeds but may have different electrical characteristics.