24AA1026T-I/ST

Memory IC Overview

The Microchip Technology 24AA1026T-I/ST is a 1-Mbit (128K x 8) Serial Electrically Erasable PROM featuring an I²C-compatible interface. It operates across a voltage range of 1.7V to 5.5V and supports clock frequencies up to 400 kHz in the Industrial temperature grade (-40°C to +85°C). The device includes a 128-byte page write buffer, hardware write-protect capability via the WP pin, and Schmitt trigger inputs for noise suppression. It is housed in an 8-lead SOIC package.

Memory IC Feature Summary

• Supports bidirectional two-wire serial communication with standard and fast mode clock compatibility
• Features a 128-byte page write buffer for efficient data transfer operations
• Includes hardware write protection controlled by the dedicated WP pin
• Provides high electrostatic discharge protection exceeding 4000V

Memory IC Applications

• Personal communications devices requiring non-volatile storage
• Data acquisition systems needing reliable parameter retention
• Embedded controllers utilizing I²C bus architectures
• Industrial equipment operating within specified temperature ranges

Memory IC Procurement Notes

Verify that the ordering suffix 'I' corresponds to the Industrial temperature range (-40°C to +85°C) and 'ST' indicates the 8-lead SOIC package. Confirm the 'T' suffix matches the required tape and reel packaging format. Ensure the design accommodates the specific voltage requirements of the 24AA1026 variant compared to other family members like the 24LC1026 or 24FC1026.

Memory IC Selection Notes

Select this component when a low-power EEPROM with a wide supply voltage range is required. The 24AA1026 offers lower standby current compared to some alternatives. Consider the 128-byte page size for write efficiency. Verify that the system bus speed does not exceed the maximum clock frequency limits defined for the specific voltage conditions.

Memory IC Part Context

This part belongs to the 24XX1026 family, which also includes the 24LC1026 and 24FC1026. These devices share identical pinouts and functional descriptions but differ in electrical specifications such as minimum operating voltage and maximum clock frequency. The 24AA1026 specifically supports operation down to 1.7V.

Memory IC Replacement Considerations

Direct substitutes include the 24LC1026 and 24FC1026 from Microchip, provided voltage and speed constraints are met. Cross-manufacturer equivalents must be verified against the I²C protocol timing and physical package dimensions.