24LC04B/SN

Memory IC Overview

The Microchip Technology 24LC04B/SN is a 4-Kbit (512 x 8) Electrically Erasable PROM (EEPROM) featuring a two-wire I²C compatible serial interface. It operates within a supply voltage range of 2.5V to 5.5V and supports clock frequencies up to 400 kHz. The device utilizes an 8-lead SOIC package and includes hardware write protection via the WP pin. Key electrical characteristics include a maximum access time of 900 ns, a page write time of 5 ms, and standby current of 5 µA in extended temperature ranges.

Memory IC Feature Summary

• Supports bidirectional data transfer using a standard two-wire serial bus protocol with Schmitt trigger inputs for noise suppression.
• Includes a 16-byte page write buffer to optimize write operations and reduce internal programming cycle frequency.
• Provides hardware write protection by tying the WP pin to VCC, inhibiting all write cycles while allowing read access.
• Features output slope control designed to eliminate ground bounce during high-speed switching operations.

Memory IC Applications

• Embedded systems requiring non-volatile storage for configuration parameters or calibration data.
• Industrial control units needing reliable data retention under varying environmental conditions.
• Consumer electronics utilizing low-power memory for user settings and operational logs.

Memory IC Procurement Notes

Verify the specific suffix 'SN' corresponds to the 8-lead SOIC package variant. Confirm that the operating environment remains within the specified voltage limits of 2.5V to 5.5V. Ensure the application design accounts for the 5 ms maximum write cycle time when implementing acknowledge polling routines to prevent bus contention during internal programming phases.

Memory IC Selection Notes

Select this component when a 4-Kbit capacity is sufficient for the target application's data storage needs. The 24LC04B variant is appropriate for designs requiring a minimum supply voltage of 2.5V, distinguishing it from lower-voltage alternatives like the 24AA04. Consider the 8-lead SOIC package dimensions if surface-mount assembly is required for the PCB layout constraints.

Memory IC Part Context

This device belongs to the 24XX04 family of serial EEPROMs manufactured by Microchip Technology. It shares functional similarities with the 24AA04 and 24FC04 models but differs in minimum operating voltage and maximum clock frequency specifications. The 24LC04B series is specifically optimized for industrial applications requiring robust performance across a wide temperature range.

Memory IC Replacement Considerations

The 24LC04BT-I/SN serves as a verified alternative offering an extended industrial temperature range (-40°C to +85°C). Cross-reference datasheet specifications regarding voltage tolerances and package pinouts before substitution to ensure compatibility with existing circuit designs.