24AA64T-I/OT

Memory IC Overview

The Microchip Technology 24AA64T-I/OT is a 64-Kbit Electrically Erasable PROM organized as 8K x 8-bit memory. It operates on a single supply voltage ranging from 1.7V to 5.5V with a maximum clock frequency of 400 kHz. The device features low-power CMOS technology, drawing a maximum active current of 3 mA and a standby current of 1 µA. It utilizes a two-wire I2C compatible serial interface and supports page write operations with a 32-byte buffer. The component is housed in a 5-lead SOT-23 package and functions within an industrial temperature range of -40°C to +85°C.

Memory IC Feature Summary

• Supports cascading up to eight devices on the same bus using hardware address pins for expanded addressing.
• Includes Schmitt trigger inputs and output slope control to suppress noise and eliminate ground bounce.
• Features hardware write protection via the WP pin to inhibit array writes while maintaining read access.
• Provides self-timed erase/write cycles with acknowledge polling capability to maximize bus throughput.

Memory IC Applications

• Industrial systems requiring non-volatile data storage
• Consumer electronics utilizing I2C communication protocols
• Automotive qualified applications meeting AEC-Q100 standards

Memory IC Procurement Notes

Verify that the specific ordering suffix corresponds to the required package type and temperature grade. Confirm that the device version matches the intended application voltage requirements. Ensure compatibility with existing I2C bus configurations regarding address pin availability. Check for any recent product change notices affecting packaging or manufacturing sites.

Memory IC Selection Notes

Select this component when a 64-Kbit EEPROM is needed with a compact 5-lead SOT-23 footprint. It is suitable for designs operating between 1.7V and 5.5V where low standby power is critical. Choose this part over variants with different clock speeds if 400 kHz operation suffices. Consider the lack of address pins in this package if multiple devices must share a single bus without external logic.

Memory IC Part Context

This device belongs to the 24XX64 family of serial EEPROMs manufactured by Microchip Technology. It shares functional similarities with the 24FC64 and 24LC64 models but differs in maximum clock speed and minimum operating voltage specifications. The 'I' designation indicates industrial temperature rating, while '/OT' specifies the SOT-23 surface-mount package configuration.

Memory IC Replacement Considerations

Direct substitutes include other 24AA64 variants with different packages such as 24AA64-I/SN or 24AA64-I/MC. Cross-family replacements like 24LC64T-I/OT are available but require verification of voltage level compatibility.