24FC04HT-I/Q4B

Memory IC Overview

The Microchip Technology 24FC04HT-I/Q4B is a 4-Kbit (256 x 8 x 2) I2C serial EEPROM housed in an 8-UDFN package. It operates on a single supply voltage ranging from 1.7V to 5.5V with a maximum clock frequency of 1 MHz. The device supports page writes up to 16 bytes and features hardware write protection for the upper half of the memory array (addresses 100h-1FFh). It offers data retention exceeding 200 years, over one million erase/write cycles, and operates within an industrial temperature range of -40°C to +85°C.

Memory IC Feature Summary

• Hardware write protection for the upper half of the memory array via the WP pin
• Low-power CMOS technology with standby current as low as 1 µA
• I2C compatible two-wire serial interface supporting 1 MHz clock speeds
• Schmitt trigger inputs and output slope control for noise suppression

Memory IC Applications

• Industrial control systems requiring non-volatile data storage
• Consumer electronics operating at low voltages
• Embedded systems needing hardware-level write protection
• Automotive applications meeting AEC-Q100 qualification standards

Memory IC Procurement Notes

Verify the specific suffix 'HT' indicates tape and reel packaging when ordering. Confirm the 'I' designation matches the required industrial temperature range of -40°C to +85°C. Ensure the Q4B package type aligns with PCB layout constraints. Check for RoHS compliance status if environmental regulations apply to the final assembly.

Memory IC Selection Notes

Select this component for designs requiring high-speed 1 MHz I2C communication compared to standard 400 kHz devices. The 1.7V minimum operating voltage makes it suitable for battery-powered or low-voltage logic systems. The integrated half-array write protection simplifies circuit design by removing the need for external logic to prevent accidental writes to critical data segments.

Memory IC Part Context

This part belongs to the 24XX04H family of 4-Kbit serial EEPROMs. It shares architectural similarities with the 24AA04H and 24LC04BH but distinguishes itself through higher speed capabilities and lower voltage operation. The UDFN package provides a compact surface-mount solution for space-constrained applications.

Memory IC Replacement Considerations

Direct replacements include other 24FC04H variants with different packaging such as MSOP or SOIC. Cross-family alternatives like the 24FC04T offer similar electrical characteristics but may differ in package dimensions.