AT24C02A-10PI-1.8 Equivalent & Substitute Parts

Part Overview

The AT24C02A-10PI-1.8 is a 2Kbit EEPROM memory IC with I2C interface manufactured by Microchip Technology. This device operates at 400 kHz clock frequency with 900 ns access time and supports a supply voltage range of 1.8V to 5.5V. The part is currently marked as obsolete, making identification of equivalent and substitute components essential for ongoing system support and new design implementations. Substitute parts maintain core functional parameters while offering improved availability and compliance status.

Substiute Parts

AT24C02A-10PI-1.8

Microchip TechnologyIn Stock: 970AT24C02A-10PI-1.8 Datasheet

Current PartRFQ

24AA024H-I/P

Microchip TechnologyIn Stock: 189024AA024H-I/P Datasheet

DirectRFQ

34LC02-E/P

Microchip TechnologyIn Stock: 103634LC02-E/P Datasheet

MFR RecommendedRFQ

34LC02-I/P

Microchip TechnologyIn Stock: 117034LC02-I/P Datasheet

MFR RecommendedRFQ

24AA52-I/P

Microchip TechnologyIn Stock: 72024AA52-I/P Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the AT24C02A-10PI-1.8 are classified based on electrical and mechanical compatibility within the following criteria:

Direct Functional Equivalents maintain identical or compatible electrical specifications: 2Kbit memory capacity, I2C interface, 256 x 8 organization, 5ms write cycle time, 8-DIP through-hole package, and operating temperature range of -40°C to 85°C. These parts differ only in supply voltage range or product status.

Enhanced Performance Substitutes provide superior electrical characteristics including higher clock frequency (1 MHz vs 400 kHz) and faster access time (400 ns vs 900 ns), while maintaining the same memory capacity, interface protocol, package form factor, and core mechanical compatibility.

Parametric Equivalents match all critical electrical parameters of the original part while offering improved compliance and availability status.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement with Improved Compliance: The 24AA024H-I/P and 24AA52-I/P are active production parts with ROHS3 compliance. Both maintain the original electrical specifications including 400 kHz clock frequency, 900 ns access time, and 1.8V to 5.5V supply voltage range. The 24AA024H-I/P extends the lower supply voltage limit to 1.7V. These parts are suitable for applications requiring identical electrical performance with enhanced regulatory compliance and supply chain availability.

For Enhanced Performance Applications: The 34LC02-E/P and 34LC02-I/P offer superior electrical characteristics with 1 MHz clock frequency and 400 ns access time, representing a 2.5x improvement in speed performance. Both parts maintain 2Kbit capacity and 8-DIP package compatibility. The 34LC02-E/P supports extended operating temperature to 125°C, while the 34LC02-I/P maintains the standard -40°C to 85°C range. These substitutes require minimum supply voltage of 2.2V, which may necessitate circuit evaluation in low-voltage applications.

All substitute parts are manufactured by Microchip Technology, maintain identical package form factor and through-hole mounting compatibility, and are currently in active production status with ROHS3 compliance.

Frequently Asked Questions (FAQ)

Q: Can the 34LC02-E/P and 34LC02-I/P be used as direct replacements for the AT24C02A-10PI-1.8?

A: Yes, with circuit evaluation. Both parts maintain identical memory capacity, I2C interface, 8-DIP package, and through-hole mounting. The primary differences are enhanced clock frequency (1 MHz vs 400 kHz) and faster access time (400 ns vs 900 ns). The minimum supply voltage requirement increases from 1.8V to 2.2V. Applications operating above 2.2V supply voltage will function without modification. Lower voltage applications require verification that the 2.2V minimum is compatible with system design.

Q: What is the difference between 24AA024H-I/P and 24AA52-I/P?

A: Both parts are parametric equivalents with identical electrical specifications: 2Kbit capacity, 400 kHz clock frequency, 900 ns access time, and 8-DIP package. The 24AA024H-I/P supports 1.7V minimum supply voltage, while the 24AA52-I/P supports 1.8V minimum. For applications requiring operation below 1.8V, the 24AA024H-I/P is the appropriate selection.

Q: Are all substitute parts compatible with the original 8-DIP through-hole footprint?

A: Yes. All substitute parts use the 8-DIP (0.300", 7.62mm) package with through-hole mounting. PCB footprints and socket compatibility are identical to the AT24C02A-10PI-1.8.

Q: What compliance certifications apply to the substitute parts?

A: All substitute parts (24AA024H-I/P, 34LC02-E/P, 34LC02-I/P, and 24AA52-I/P) are ROHS3 compliant and REACH unaffected. The original AT24C02A-10PI-1.8 is RoHS non-compliant, making these substitutes necessary for applications with regulatory compliance requirements.

Q: Which substitute part should be selected for new designs?

A: For new designs requiring standard performance, the 24AA024H-I/P or 24AA52-I/P provide active production status with full compliance. For applications benefiting from enhanced speed performance, the 34LC02-I/P offers 1 MHz operation within the standard -40°C to 85°C temperature range. The 34LC02-E/P is suitable when extended temperature operation to 125°C is required.