24AA16HT-I/ST

Memory IC Overview

The Microchip Technology 24AA16HT-I/ST is a 16-Kbit Electrically Erasable PROM organized as eight blocks of 256 x 8-bit memory. It operates on a single supply ranging from 1.7V to 5.5V with a maximum clock frequency of 400 kHz in the industrial temperature range (-40°C to +85°C). The device features low-power CMOS technology, drawing a maximum standby current of 1 μA and an active read current of 1 mA. It utilizes a two-wire I²C compatible serial interface and includes hardware write-protect functionality for half the array (addresses 400h-7FFh) when the WP pin is tied to VCC.

Memory IC Feature Summary

• Hardware write-protect capability for the upper half of the memory array via the WP pin
• Low-power operation with standby current as low as 1 μA and active read current of 1 mA
• Integrated page write buffer supporting up to 16 bytes per cycle

Memory IC Applications

• Data logging systems requiring non-volatile storage
• Configuration parameter storage in embedded controllers
• Industrial control devices needing reliable data retention

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 'H' designation aligns with the specific voltage and speed characteristics defined in the official datasheet. Ensure compatibility with the required I²C bus voltage levels before procurement.

Memory IC Selection Notes

Select this component for applications requiring 16-Kbit capacity with hardware-level write protection. It is suitable for designs operating at voltages down to 1.7V. Consider the 400 kHz clock limit at higher voltages and the 100 kHz limit below 2.5V. Verify that the 8-Lead SOIC package fits the PCB layout constraints.

Memory IC Part Context

This part belongs to the 24XX16H family of serial EEPROMs, which also includes the 24LC16BH and 24FC16H variants. These devices share similar architectural features but differ in minimum operating voltage and maximum clock frequency specifications. The 24AA16H series is specifically optimized for lower voltage operation starting at 1.7V.

Memory IC Replacement Considerations

Direct substitutes within the same package and electrical specifications include other 24AA16H variants with different suffixes, such as 24AA16H-I/SN or 24AA16H-I/MNY. Cross-family replacements like the 24LC16B require verification of the minimum supply voltage requirements.