24LC04BH-I/MS

Memory IC Overview

The Microchip Technology 24LC04BH-I/MS is a 4-Kbit (512 x 8) serial EEPROM featuring an I²C-compatible two-wire interface. It operates within a voltage range of 2.5V to 5.5V and supports a maximum clock frequency of 400 kHz. The device includes hardware write protection for the upper half-array (addresses 100h-1FFh) via the WP pin. It utilizes low-power CMOS technology with a maximum active read current of 1 mA and standby current of 5 µA at extended temperatures. Data retention exceeds 200 years, and endurance reaches one million erase/write cycles.

Memory IC Feature Summary

• Hardware write protection capability for the upper half of the memory array
• Low-power CMOS design with minimal active and standby current consumption
• Integrated Schmitt trigger inputs and noise filtering for reliable bus communication
• Self-timed page write functionality with a 16-byte buffer

Memory IC Applications

• Embedded systems requiring non-volatile data storage
• Industrial control devices operating in noisy environments
• Consumer electronics utilizing I²C bus architectures
• Automotive applications meeting AEC-Q100 qualification standards

Memory IC Procurement Notes

Verify the specific suffix 'I/MS' confirms the Industrial temperature grade (-40°C to +85°C) and MSOP-8 package type. Confirm that the 'BH' designation indicates the Half-Array Write-Protect feature set. Ensure compatibility with the required supply voltage range of 2.5V to 5.5V for the LC series variant before integration.

Memory IC Selection Notes

Select this component when a 4-Kbit capacity is sufficient for application requirements. The MSOP-8 package is suitable for surface-mount designs with space constraints. Consider the 400 kHz speed limit if higher bus frequencies are needed, as other variants in the family may support 1 MHz. Verify that the hardware write protect function aligns with the system's security architecture.

Memory IC Part Context

This part belongs to the 24XX04H family, which shares architectural similarities with the 24AA04H and 24FC04H. The primary distinction lies in the minimum operating voltage; the LC variant requires a minimum of 2.5V, whereas the AA and FC variants operate down to 1.7V. All three share the same physical footprint and pinout configuration.

Memory IC Replacement Considerations

Direct substitutes include the 24LC04B-I/MS, though it lacks the half-array write-protect feature. For lower voltage operation, the 24AA04H-I/MS or 24FC04H-I/MS are compatible alternatives with identical pinouts.