24LC04BHT-I/ST

Memory IC Overview

The Microchip Technology 24LC04BHT-I/ST is a 4-Kbit (512 x 8) Electrically Erasable PROM (EEPROM) featuring a two-wire serial interface compatible with I2C. It operates within a voltage range of 2.5V to 5.5V and supports clock frequencies up to 400 kHz, with an access time of 900 ns. The device includes hardware write protection for the upper half of the memory array (addresses 100h-1FFh). It is housed in an 8-lead TSSOP package and functions reliably across an industrial temperature range of -40°C to +85°C.

Memory IC Feature Summary

• Hardware write protection capability for the upper half of the memory array via the WP pin
• Low-power CMOS technology with standby current as low as 5 µA at extended temperatures
• Integrated Schmitt trigger inputs and noise filters on SDA and SCL lines for signal integrity

Memory IC Applications

• Embedded systems requiring non-volatile data storage for configuration parameters
• Industrial control units needing reliable memory under noisy bus conditions
• Consumer electronics utilizing I2C communication protocols for small data retention

Memory IC Procurement Notes

Verify that the ordering suffix 'I' corresponds to the Industrial temperature grade (-40°C to +85°C) and 'ST' indicates the TSSOP package. Confirm the specific voltage operation requirements align with the 2.5V minimum specification for the 24LC04BH series, distinct from lower voltage variants like the 24AA04H.

Memory IC Selection Notes

Select this component when a 4-Kbit EEPROM with I2C compatibility is required alongside hardware-level write protection for critical data segments. Ensure the system voltage remains above 2.5V to maintain the specified 400 kHz clock frequency. Consider the TSSOP package dimensions if board space constraints favor surface-mount thin profiles over SOIC or MSOP alternatives.

Memory IC Part Context

This part belongs to the 24XX04H family, which shares architectural similarities but differs in voltage ranges and clock speeds among its variants (24AA04H, 24LC04BH, 24FC04H). The 24LC04BH specifically targets applications requiring operation down to 2.5V, distinguishing it from the 1.7V capable 24AA04H and the high-speed 1 MHz 24FC04H.

Memory IC Replacement Considerations

Direct substitutes within the same package and electrical specifications include other 24LC04BH variants such as 24LC04BHT-I/SN (SOIC) or 24LC04BHT-I/MS (MSOP), provided the physical footprint matches the design.