24AA08H-I/SN

Memory IC Overview

The Microchip Technology 24AA08H-I/SN is an 8 Kbit Electrically Erasable PROM organized as four blocks of 256 x 8-bit memory. It features a 2-wire serial interface compatible with I²C™, supporting maximum clock frequencies of 400 kHz at VCC ≥ 2.5V and 100 kHz at VCC < 2.5V. The device operates on a single supply ranging from 1.7V to 5.5V. Key electrical parameters include a typical page write time of 3 ms, standby current of 1 µA max, and read current of 1 mA max. It offers data retention exceeding 200 years and endurance of over 1 million erase/write cycles.

Memory IC Feature Summary

• Hardware write-protect capability for the upper half of the memory array via the WP pin
• Integrated Schmitt trigger inputs and output slope control for noise suppression and ground bounce elimination
• Supports acknowledge polling to maximize bus throughput during internal write cycles
• Low-power CMOS technology enabling operation down to 1.7V with minimal active and standby currents

Memory IC Applications

• Industrial systems requiring non-volatile data storage with hardware write protection
• Embedded controllers needing low-voltage operation (1.7V) for power efficiency
• Noisy environments utilizing Schmitt trigger inputs for signal integrity
• Applications requiring acknowledge polling to optimize I²C bus performance

Memory IC Procurement Notes

Verify the specific suffix 'I/SN' corresponds to Industrial temperature range (-40°C to +85°C) and SOIC-8 package. Confirm voltage requirements align with the 1.7V minimum specification for the 24AA08H variant. Ensure the design accounts for the 400 kHz clock limit at voltages above 2.5V. Check datasheet revisions for any packaging or electrical characteristic updates before finalizing procurement specifications.

Memory IC Selection Notes

Select this component when a low-voltage EEPROM with hardware write protection is required. The 24AA08H supports operation down to 1.7V, distinguishing it from the 24LC08BH which requires a minimum of 2.5V. Consider the 16-byte page write buffer for efficient data handling. Verify that the SOIC-8 package fits the PCB layout constraints. Ensure the application environment stays within the industrial temperature range limits specified for the 'I' grade.

Memory IC Part Context

This part belongs to the 24XX08H family of 8 Kbit serial EEPROMs manufactured by Microchip Technology. It shares functional similarities with the 24LC08BH but differs in minimum operating voltage. The family utilizes a standard 2-wire I²C interface and includes packages such as PDIP, SOIC, TSSOP, TDFN, MSOP, and SOT-23. The 'H' designation typically indicates the lower voltage capability compared to standard variants.

Memory IC Replacement Considerations

The 24LC08BH-I/SN is a direct pin-compatible alternative within the same datasheet, though it requires a minimum supply voltage of 2.5V instead of 1.7V. Other 24AA08H variants with different packages (e.g., TSSOP, MSOP) are available if form factor changes are acceptable.