24LC04B-I/STG

Memory IC Overview

The Microchip Technology 24LC04B-I/STG is a 4-Kbit Electrically Erasable PROM (EEPROM) organized as two blocks of 256 x 8-bit memory. It features a Two-Wire Serial Interface compatible with I²C protocols, supporting maximum clock frequencies of 100 kHz at voltages below 2.5V and 400 kHz for VCC between 2.5V and 5.5V. The device operates within a supply voltage range of 2.5V to 5.5V and supports an industrial temperature range from -40°C to +85°C. Key electrical characteristics include a maximum read current of 1 mA, standby current of 5 µA, and access time of 900 ns.

Memory IC Feature Summary

• Supports bidirectional data transmission via a standard Two-Wire Serial Interface compatible with I²C protocols.
• Includes hardware write-protect functionality controlled by the WP pin to inhibit write operations when tied to VCC.
• Features Schmitt trigger inputs and filter circuits on SCL and SDA lines to suppress noise spikes.
• Provides output slope control designed to eliminate ground bounce during signal transitions.

Memory IC Applications

• Embedded systems requiring non-volatile storage for configuration parameters.
• Industrial control devices needing reliable data retention in noisy environments.
• Consumer electronics utilizing low-power serial memory for small data sets.

Memory IC Procurement Notes

Verify that the ordering suffix corresponds to the specific package type required, such as TSSOP for the ST variant. Confirm the temperature grade matches the application environment, ensuring the 'I' designation aligns with industrial specifications. Check RoHS compliance status if restricted substances are a constraint. Ensure the supplier provides valid traceability documentation consistent with Microchip manufacturing standards.

Memory IC Selection Notes

Select this component when a 4-Kbit capacity is sufficient for the application's data storage needs. Choose the 24LC04B over the 24AA04 if the system operates exclusively above 2.5V, as it offers optimized performance in that range. Consider the 24FC04 only if higher speed up to 1 MHz is required. Ensure the host controller supports the I²C protocol and can manage the acknowledge polling mechanism during write cycles.

Memory IC Part Context

This part belongs to the 24XX04 family of serial EEPROMs manufactured by Microchip Technology. It shares architectural similarities with the 24AA04 and 24FC04 but differs in minimum operating voltage and maximum clock frequency specifications. The device is available in multiple package formats including MSOP, PDIP, SOIC, and TSSOP, allowing flexibility in PCB layout design.

Memory IC Replacement Considerations

Direct substitutes within the same family include the 24LC04B-I/SN (SOIC package) or 24LC04B-I/P (PDIP package). Cross-family replacements like the 24AA04 require verification of voltage compatibility, as the 24AA04 supports lower voltages down to 1.7V. Ensure any replacement maintains the same I²C interface timing requirements and physical footprint.