Equivalent & Substitute Parts for 24AA01/P

Part Overview

The 24AA01/P is a 1Kbit EEPROM memory IC manufactured by Microchip Technology, featuring I2C interface operation at 400 kHz with 8-PDIP through-hole packaging. This part is currently classified as obsolete, which necessitates identification of equivalent substitute components for ongoing design support and production requirements. Substitute parts maintain functional compatibility through identical memory capacity, interface protocol, and electrical specifications while offering active product status and extended temperature operating ranges.

Substiute Parts

24AA01/P

Microchip TechnologyIn Stock: 107824AA01/P Datasheet

Current PartRFQ

24AA01-I/P

Microchip TechnologyIn Stock: 251224AA01-I/P Datasheet

MFR RecommendedRFQ

24AA014H-I/P

Microchip TechnologyIn Stock: 233124AA014H-I/P Datasheet

MFR RecommendedRFQ

24AA01H-I/P

Microchip TechnologyIn Stock: 105424AA01H-I/P Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 24AA01/P is determined by strict equivalence across the following critical parameters: memory capacity (1Kbit), memory organization (128 x 8), interface protocol (I2C), clock frequency (400 kHz), write cycle time (5ms), supply voltage range (1.7V ~ 5.5V), package type (8-DIP), and mounting configuration (through-hole). Access time variations are permitted within the substitute group, as this parameter does not affect functional compatibility in I2C EEPROM applications. All substitute parts maintain identical electrical and mechanical specifications except where explicitly noted in the parameter comparison table.

Parameter Comparison

Engineering Selection Recommendations

The 24AA01-I/P is the primary recommended substitute for the obsolete 24AA01/P. Both parts share identical access time specifications (3500 ns) and are verified as programmable by DiGi-Electronics. The 24AA01-I/P maintains active product status with extended operating temperature range (-40°C ~ 85°C) compared to the original part (0°C ~ 70°C), providing improved thermal performance for industrial and extended-temperature applications. All three substitute options (24AA01-I/P, 24AA014H-I/P, 24AA01H-I/P) are functionally equivalent and maintain full electrical and mechanical compatibility with the original 24AA01/P design.

The 24AA014H-I/P and 24AA01H-I/P variants offer improved access time performance (900 ns) relative to the original specification (3500 ns), enabling faster read operations in timing-critical applications. These variants are suitable for direct replacement in existing designs without circuit modification.

Frequently Asked Questions (FAQ)

Q: Can the 24AA01-I/P directly replace the 24AA01/P in existing designs?

A: Yes. The 24AA01-I/P maintains identical electrical specifications, memory capacity, interface protocol, clock frequency, write cycle time, supply voltage range, and 8-DIP package configuration. The extended operating temperature range (-40°C ~ 85°C versus 0°C ~ 70°C) provides additional thermal margin without affecting functional compatibility.

Q: What is the difference between 24AA01-I/P and 24AA014H-I/P?

A: Both parts are functionally equivalent with identical memory capacity, interface, and electrical specifications. The primary difference is access time: 24AA01-I/P operates at 3500 ns while 24AA014H-I/P operates at 900 ns. The faster access time of 24AA014H-I/P does not affect I2C protocol compliance and represents an improvement in read performance.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts (24AA01-I/P, 24AA014H-I/P, 24AA01H-I/P) are ROHS3 compliant with MSL rating 1 (unlimited moisture sensitivity level) and REACH unaffected status, matching the original 24AA01/P compliance profile.

Q: Can I use 24AA014H-I/P or 24AA01H-I/P as drop-in replacements?

A: Yes. Both parts are pin-compatible through-hole 8-DIP packages with identical footprints (0.300", 7.62mm). The improved access time (900 ns) represents a performance enhancement and does not introduce compatibility issues with existing PCB designs or circuit implementations.

Q: What inventory status should I consider for production planning?

A: The 24AA01/P (obsolete) has 1058 units in stock. Active substitutes include 24AA01-I/P (2435 units), 24AA014H-I/P (2300 units), and 24AA01H-I/P (1001 units). For new designs and ongoing production, prioritize active parts to ensure long-term supply continuity.