24AA044-E/ST

Memory IC Overview

The Microchip Technology 24AA044-E/ST is a 4-kbit (512 x 8) serial electrically erasable programmable read-only memory (EEPROM). It utilizes a 2-wire I2C interface with a maximum clock frequency of 1 MHz. The device operates within a supply voltage range of 1.7 V to 5.5 V and features an active read current of up to 3 mA. It is housed in an 8-pin TSSOP package designed for surface-mount technology. The component supports data retention for 200 years and functions across an industrial temperature range from -40°C to +85°C.

Memory IC Feature Summary

• Supports high-speed I2C communication with a maximum clock frequency of 1 MHz
• Operates on a wide supply voltage range from 1.7 V to 5.5 V
• Provides long-term non-volatile data retention capability

Memory IC Applications

• Industrial control systems requiring reliable parameter storage
• Consumer electronics utilizing low-voltage power supplies
• Embedded devices needing compact serial memory solutions

Memory IC Procurement Notes

Verify the specific suffix 'E' indicates the extended industrial temperature range (-40°C to +85°C) compared to commercial variants. Confirm the 'ST' designation corresponds to the TSSOP-8 package type. Ensure compatibility with the target system's I2C bus voltage levels, as the device supports voltages down to 1.7 V. Cross-reference the manufacturer datasheet for humidity sensitivity handling requirements during assembly.

Memory IC Selection Notes

Select this part when a 4-kbit capacity is required alongside high-speed 1 MHz I2C performance. It is suitable for applications demanding operation at lower supply voltages starting from 1.7 V. Choose this model over the 24LC044 series if full 1.7 V to 5.5 V compatibility is necessary, as the LC variant typically starts at 2.5 V. Consider the TSSOP-8 package constraints for PCB layout space.

Memory IC Part Context

This component belongs to the Microchip 24AA04 family of serial EEPROMs. It shares architectural similarities with the 24AA044T-E/ST (tape and reel version) and the 24AA04H-I/ST (high-speed variant). Unlike the 24LC044, which has restricted voltage ranges, this EE variant offers broader voltage flexibility. It serves as a direct upgrade for legacy 2-kbit memories where increased density and speed are needed.

Memory IC Replacement Considerations

The 24AA044T-E/ST is a functional equivalent differing only in packaging format (reel vs. tube). The 24AA04H-I/ST offers similar capacity but may differ in specific timing characteristics or temperature grades. Verify pinout compatibility before substituting with other 24-series EEPROMs.