24LC02BHT-E/ST

Memory IC Overview

The Microchip Technology 24LC02BHT-E/ST is a 2 Kbit (256 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 clock frequencies up to 400 kHz. The device utilizes low-power CMOS technology with a maximum read current of 1 mA and standby current of 1 µA. It includes an 8-byte page write buffer, self-timed erase/write cycles, and hardware write protection for the upper half of the memory array. The component is housed in an 8-lead TSSOP package and is rated for extended industrial temperatures from -40°C to +125°C.

Memory IC Feature Summary

• Hardware write protection for the upper half of the memory array via the WP pin
• Integrated Schmitt trigger inputs and output slope control for noise suppression
• Self-timed erase/write cycle with automatic acknowledge polling capability
• High reliability with over one million erase/write cycles and data retention exceeding 200 years

Memory IC Applications

• Non-volatile data storage in embedded systems requiring half-array protection
• Configuration parameter storage in industrial control devices
• Calibration data retention in sensor modules operating at elevated temperatures
• Device identification and serial number storage in IoT endpoints

Memory IC Procurement Notes

Verify that the ordering suffix matches the required temperature grade and packaging format. Confirm the presence of the 'E' designation indicates the extended temperature range (-40°C to +125°C). Ensure the '/ST' suffix corresponds to the 8-lead TSSOP package type. Cross-reference the specific revision code against the manufacturer's latest datasheet to confirm compatibility with current manufacturing standards.

Memory IC Selection Notes

Select this component when half-array write protection is mandatory for security or stability. Choose this part over standard variants if operation above 85°C is required. Verify that the system power supply remains within the 2.5V to 5.5V range to ensure proper logic levels. Consider the TSSOP package dimensions during PCB layout if space constraints are critical compared to SOIC or PDIP options.

Memory IC Part Context

This device belongs to the 24XX02H family of 2 Kbit serial EEPROMs manufactured by Microchip Technology. It shares functional similarities with the 24AA02H but differs in minimum operating voltage requirements. The family supports multiple package types including MSOP, PDIP, SOIC, TDFN, and SC-70. It is designed as a drop-in replacement for legacy 24LC02B devices where extended temperature performance is needed.

Memory IC Replacement Considerations

The 24LC02B-I/ST serves as a direct functional substitute with identical electrical characteristics but a lower industrial temperature rating (-40°C to +85°C). Other compatible parts within the same family include the 24LC02BH-I/ST for industrial temperature grades.