24AA04/SN

Memory IC Overview

The Microchip Technology 24AA04/SN is a 4-Kbit (512 x 8) Electrically Erasable PROM (EEPROM) housed in an 8-lead SOIC package. It operates on a single supply voltage ranging from 1.7V to 5.5V and supports a maximum clock frequency of 400 kHz at voltages above 2.5V, or 100 kHz below that threshold. The device features a two-wire I2C compatible serial interface, with a typical access time of 900 ns and a maximum page write time of 5 ms.

Memory IC Feature Summary

• Supports low-voltage operation down to 1.7V with standby current as low as 1 µA.
• Includes hardware write protection via the WP pin to inhibit memory writes when tied high.
• Features Schmitt trigger inputs and output slope control for noise suppression and ground bounce elimination.
• Provides a 16-byte page write buffer to enhance bus throughput during data programming.

Memory IC Applications

• Data logging systems requiring non-volatile storage
• Configuration parameter storage in embedded controllers
• Calibration data retention for sensor modules

Memory IC Procurement Notes

Verify the specific suffix 'SN' confirms the 8-lead SOIC package type. Confirm the temperature grade matches application requirements, as industrial variants operate between -40°C and +85°C. Ensure the design accounts for the 1.7V minimum operating voltage if using lower supply rails. Check RoHS compliance status for environmental regulations.

Memory IC Selection Notes

Select this component for applications needing small footprint non-volatile memory with I2C connectivity. Compare against 24LC04B if a higher 2.5V minimum voltage is acceptable, or 24FC04 if 1 MHz speed is required. Consider the 16-byte page buffer size for write efficiency. Verify voltage levels match the host controller's logic thresholds.

Memory IC Part Context

This part belongs to the 24XX04 family, which includes the 24AA04, 24LC04B, and 24FC04 devices. These parts share similar pinouts and functional protocols but differ in voltage ranges and clock speeds. The 24AA04 specifically targets low-voltage industrial applications compared to the 2.5V minimum of the 24LC04B.

Memory IC Replacement Considerations

Direct substitutes include other 24AA04 variants with different packages such as MSOP or TSSOP. Cross-family replacements like 24LC04B or 24FC04 are possible but require verification of voltage and speed compatibility.