24FC04H-I/ST

Memory IC Overview

The Microchip Technology 24FC04H-I/ST is a 4-Kbit (512 x 8) I²C serial EEPROM housed in an 8-lead TSSOP package. It operates within a voltage range of 1.7V to 5.5V and supports clock frequencies up to 1 MHz across the full supply range. The device features hardware write protection for the upper half-array (addresses 100h–1FFh) via the WP pin, a 16-byte page write buffer, and Schmitt trigger inputs for noise suppression. It guarantees over one million erase/write cycles and data retention exceeding 200 years.

Memory IC Feature Summary

• Hardware write protection for the upper half of the memory array
• 16-byte page write buffer for efficient data transfer
• Schmitt trigger inputs with spike suppression for noise immunity

Memory IC Applications

• Industrial control systems requiring non-volatile parameter storage
• Consumer electronics utilizing low-voltage power supplies
• Embedded devices needing secure configuration data retention

Memory IC Procurement Notes

Verify that the ordering suffix 'I' corresponds to the Industrial temperature range (-40°C to +85°C). Confirm the 'ST' suffix matches the required 8-lead TSSOP package type. Ensure the design utilizes the correct client address bits as specified in the datasheet addressing section.

Memory IC Selection Notes

Select this component when high-speed 1 MHz I²C communication is required at voltages below 2.5V. The 24FC04H offers faster performance than the 24AA04H or 24LC04BH variants while maintaining compatibility with standard two-wire interfaces. Consider the half-array write protection feature if specific memory regions require permanent data locking.

Memory IC Part Context

This part belongs to the 24XX04H family of 4-Kbit serial EEPROMs from Microchip Technology. It shares functional similarities with the 24AA04H and 24LC04BH but distinguishes itself through support for 1 MHz clock speeds at lower operating voltages. The family provides various package options including MSOP, PDIP, SOIC, and SOT-23.

Memory IC Replacement Considerations

Direct substitutes include other 24FC04H variants with different packages such as 24FC04H-I/MS or 24FC04H-I/SN. For applications not requiring 1 MHz speed, the 24AA04H or 24LC04BH may be used, though they operate at lower maximum clock frequencies.