Microchip Technology 24AA02/P EEPROM Memory IC Equivalent & Substitute Parts

Part Overview

The Microchip Technology 24AA02/P is a 2Kbit EEPROM memory integrated circuit with I2C interface operating at 400 kHz. This through-hole 8-DIP package device provides non-volatile serial memory suitable for embedded systems requiring persistent data storage. The part is currently in active production status with ROHS3 compliance and verified programmability through DiGi-Electronics. Equivalent and substitute parts are identified based on matching memory capacity, interface protocol, package type, and electrical operating parameters to ensure direct functional replacement in circuit designs.

Substiute Parts

24AA02/P

Microchip TechnologyIn Stock: 91124AA02/P Datasheet

Current PartRFQ

24AA02-I/P

Microchip TechnologyIn Stock: 128824AA02-I/P Datasheet

MFR RecommendedRFQ

24AA024-I/P

Microchip TechnologyIn Stock: 198524AA024-I/P Datasheet

MFR RecommendedRFQ

24AA024H-I/P

Microchip TechnologyIn Stock: 189024AA024H-I/P Datasheet

MFR RecommendedRFQ

34AA02-I/P

Microchip TechnologyIn Stock: 295734AA02-I/P Datasheet

MFR RecommendedRFQ

AT24HC02C-PUM

Microchip TechnologyIn Stock: 6177AT24HC02C-PUM Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 24AA02/P are qualified based on the following critical parameters that determine functional equivalence:

Core Substitution Criteria:

• Memory capacity: 2Kbit (256 x 8 organization)
• Interface protocol: I2C serial communication
• Package format: 8-DIP through-hole configuration
• Supply voltage compatibility: 1.7V ~ 5.5V range
• Package dimensions: 0.300" (7.62mm) pitch

Substitute parts are grouped into two categories based on operating temperature range and clock frequency specifications. The 24AA02-I/P, 24AA024-I/P, 24AA024H-I/P, and 34AA02-I/P maintain the 400 kHz I2C clock frequency with extended operating temperature range (-40°C ~ 85°C). The AT24HC02C-PUM operates at an elevated 1 MHz clock frequency with 550 ns access time, providing faster performance while maintaining 2Kbit capacity and 8-DIP package compatibility.

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalents (400 kHz I2C Operation): The 24AA02-I/P is the primary substitute with verified programmability and extended operating temperature range (-40°C ~ 85°C), making it suitable for industrial and automotive applications requiring wider temperature tolerance than the original 24AA02/P specification.

The 24AA024-I/P and 24AA024H-I/P maintain identical electrical and timing parameters with extended temperature range. These parts are in active production status with ROHS3 compliance and REACH unaffected designation.

The 34AA02-I/P provides equivalent functionality with extended temperature range and higher inventory availability (2923 units in stock).

Enhanced Performance Alternative (1 MHz I2C Operation): The AT24HC02C-PUM operates at 1 MHz clock frequency with improved 550 ns access time compared to the 900 ns specification of the original part. This device is suitable for applications requiring faster I2C communication while maintaining 2Kbit capacity and 8-DIP package compatibility. All parts maintain ROHS3 compliance and REACH unaffected status.

Frequently Asked Questions (FAQ)

Q: Can the 24AA02-I/P directly replace the 24AA02/P in existing designs? A: Yes. The 24AA02-I/P maintains identical memory capacity (2Kbit), I2C interface (400 kHz), access time (900 ns), supply voltage range (1.7V ~ 5.5V), and 8-DIP package configuration. The extended operating temperature range (-40°C ~ 85°C versus 0°C ~ 70°C) provides additional margin for temperature-sensitive applications.

Q: What is the difference between 24AA024-I/P and 24AA024H-I/P? A: Both parts share identical electrical specifications, memory organization (256 x 8), I2C clock frequency (400 kHz), and 8-DIP package format. The designation difference reflects internal device variants within the Microchip product line, with both maintaining ROHS3 compliance and active production status.

Q: When should the AT24HC02C-PUM be selected instead of 400 kHz alternatives? A: The AT24HC02C-PUM operates at 1 MHz I2C frequency with 550 ns access time, providing faster serial communication compared to 400 kHz devices with 900 ns access time. This part is suitable for applications requiring higher I2C bus speeds while maintaining 2Kbit capacity and 8-DIP through-hole package compatibility.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitute parts (24AA02-I/P, 24AA024-I/P, 24AA024H-I/P, 34AA02-I/P, and AT24HC02C-PUM) are ROHS3 compliant and REACH unaffected, meeting environmental regulatory requirements for electronic component manufacturing.

Q: What is the significance of "Programmable Verified" status? A: The 24AA02/P and 24AA02-I/P carry DiGi-Electronics programmable verification, confirming functional testing and compatibility validation. The remaining substitute parts (24AA024-I/P, 24AA024H-I/P, 34AA02-I/P, AT24HC02C-PUM) are in active production with equivalent electrical specifications but without DiGi-Electronics verification notation.

Q: Can these parts be used interchangeably in I2C bus applications? A: Yes, within the specified operating parameters. All parts implement I2C serial interface with 256 x 8 byte organization and 5 ms write cycle time. The 400 kHz variants are directly interchangeable. The 1 MHz AT24HC02C-PUM requires I2C bus support for 1 MHz operation but remains backward compatible with slower I2C implementations.