AT24C64-10PI-1.8 Equivalent & Substitute Parts

Part Overview

The AT24C64-10PI-1.8 is a 64Kbit EEPROM memory IC with I2C interface operating at 400 kHz, manufactured by Microchip Technology. This component features 8K x 8 memory organization in an 8-DIP through-hole package. The part is classified as obsolete, necessitating identification of active equivalent alternatives that maintain functional and electrical compatibility for system integration and production continuity.

Substiute Parts

AT24C64-10PI-1.8

Microchip TechnologyIn Stock: 1182AT24C64-10PI-1.8 Datasheet

Current PartRFQ

24AA64F-I/P

Microchip TechnologyIn Stock: 352424AA64F-I/P Datasheet

DirectRFQ

24AA64-E/P

Microchip TechnologyIn Stock: 104624AA64-E/P Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AT24C64-10PI-1.8 is determined by strict alignment with the following electrical and mechanical parameters: 64Kbit memory capacity, 8K x 8 organization, I2C interface protocol, 400 kHz clock frequency, 900 ns access time, 8-DIP through-hole package, and compatible voltage supply range. The identified substitute parts maintain these core specifications while offering improved product status and compliance certifications. Substitutes must support the full operating temperature range or exceed it, and must be pin-compatible within the 8-DIP package footprint.

Parameter Comparison

Engineering Selection Recommendations

Both 24AA64F-I/P and 24AA64-E/P are active, ROHS3-compliant alternatives to the obsolete AT24C64-10PI-1.8. The 24AA64F-I/P maintains the original operating temperature range of -40°C to 85°C and offers improved write cycle time of 5ms compared to the original 10ms specification. The 24AA64-E/P extends the operating temperature range to -40°C to 125°C, providing enhanced thermal performance for applications requiring extended temperature operation. Both substitutes are electrically and mechanically compatible with the original part, featuring identical memory capacity, interface protocol, access time, and package configuration. Selection between the two substitutes should be based on specific application temperature requirements and thermal environment constraints.

Frequently Asked Questions (FAQ)

Q: Are 24AA64F-I/P and 24AA64-E/P pin-compatible with AT24C64-10PI-1.8?

A: Yes. All three parts use the 8-DIP (0.300", 7.62mm) package with identical pin configuration, enabling direct socket replacement without PCB modification.

Q: What is the primary difference between the two substitute parts?

A: The 24AA64-E/P supports an extended operating temperature range of -40°C to 125°C, compared to -40°C to 85°C for the 24AA64F-I/P. Both parts feature identical electrical specifications and improved write cycle time of 5ms.

Q: Why is the write cycle time different between the original and substitute parts?

A: The AT24C64-10PI-1.8 specifies a 10ms write cycle time, while both 24AA64F-I/P and 24AA64-E/P specify 5ms. This represents an improvement in write performance and does not affect compatibility, as systems designed for 10ms cycles will function correctly with faster write times.

Q: Are the substitute parts RoHS compliant?

A: Yes. Both 24AA64F-I/P and 24AA64-E/P are ROHS3 compliant, whereas the original AT24C64-10PI-1.8 is RoHS non-compliant. This compliance improvement is beneficial for applications subject to RoHS regulations.

Q: What voltage range do the substitute parts support?

A: Both 24AA64F-I/P and 24AA64-E/P support 1.7V to 5.5V, compared to 1.8V to 5.5V for the original part. The lower minimum voltage specification provides additional operational flexibility.

Q: Can I use these substitutes in existing designs without modification?

A: Yes. The substitute parts maintain full electrical and mechanical compatibility with the AT24C64-10PI-1.8, including identical I2C interface protocol, 400 kHz clock frequency, 900 ns access time, and 8-DIP through-hole package configuration.