24LC04B/ST

Memory IC Overview

The Microchip Technology 24LC04B/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 supply voltage range of 2.5V to 5.5V and supports maximum clock frequencies up to 400 kHz. The device utilizes an 8-lead Thin Shrink Small Outline Package (TSSOP). Key electrical characteristics include a maximum access time of 900 ns, a page write time of 5 ms, and standby current consumption of 5 µA in extended temperature ranges.

Memory IC Feature Summary

• Supports bidirectional data transfer via a two-wire serial bus using SDA and SCL lines.
• Includes hardware write protection controlled by the WP pin to inhibit memory writes.
• Features Schmitt trigger inputs and noise suppression filters for reliable operation on noisy buses.
• Contains a 16-byte page write buffer to optimize sequential data writing efficiency.

Memory IC Applications

• Embedded systems requiring non-volatile storage for configuration parameters.
• Industrial control devices needing reliable data retention under varying temperatures.
• Consumer electronics utilizing low-power memory for small data sets.

Memory IC Procurement Notes

Verify that the ordering suffix /ST corresponds specifically to the TSSOP package type as defined in the manufacturer's selection table. Confirm the 'I' or 'E' temperature grade matches the operational environment requirements. Ensure compatibility with the required I²C voltage levels and check for specific RoHS compliance documentation if mandated by the target application standards.

Memory IC Selection Notes

Select this component when a 4-Kbit capacity is sufficient for the application's data storage needs. The 2.5V minimum operating voltage distinguishes it from lower-voltage variants like the 24AA04. Consider the TSSOP package constraints regarding board space and thermal dissipation. Verify that the 400 kHz clock speed meets the system's communication timing requirements without necessitating faster interfaces.

Memory IC Part Context

This part belongs to the 24XX04 family of serial EEPROMs manufactured by Microchip Technology. It shares functional similarities with the 24AA04 and 24FC04 but differs in minimum operating voltage and maximum clock frequency specifications. The family is designed for applications requiring simple serial connectivity and robust data retention capabilities across industrial and extended temperature ranges.

Memory IC Replacement Considerations

Direct substitutes within the same package and specification profile include the 24LC04B-I/ST for industrial temperature range and the 24LC04B-E/ST for extended temperature range. Other packages such as SOIC or MSOP may serve as physical alternatives if pin compatibility allows.