AT24C02-10PI-1.8 Equivalent & Substitute Parts

Part Overview

The AT24C02-10PI-1.8 is a 2Kbit EEPROM memory IC with I2C interface operating at 400 kHz, manufactured by Microchip Technology. This device is classified as obsolete, which necessitates identification of active equivalent and substitute parts for ongoing design support and procurement. The part features 256 x 8 memory organization, 900 ns access time, and operates across a 1.8V to 5.5V supply voltage range with temperature range of -40°C to 85°C. Equivalent alternatives maintain core functional parameters while offering improved availability and compliance status.

Substiute Parts

AT24C02-10PI-1.8

Microchip TechnologyIn Stock: 3509AT24C02-10PI-1.8 Datasheet

Current PartRFQ

24AA024H-I/P

Microchip TechnologyIn Stock: 189024AA024H-I/P Datasheet

DirectRFQ

24LC02B/P

Microchip TechnologyIn Stock: 1513224LC02B/P Datasheet

MFR RecommendedRFQ

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

Substitution of the AT24C02-10PI-1.8 is determined by strict equivalence across the following critical parameters: memory size (2Kbit), memory organization (256 x 8), interface protocol (I2C), package type (8-DIP), and mounting method (Through Hole). Substitute parts are grouped into three categories based on their relationship to the original specification:

Direct Equivalents maintain all electrical and mechanical parameters identical to the original part, differing only in product status or compliance certifications.

Manufacturer Recommended Substitutes are designated by Microchip Technology as approved alternatives, with allowable variations in clock frequency, access time, or operating temperature range that remain within system compatibility.

Parametric Equivalents share core memory specifications and package format but may operate at different clock frequencies or temperature ranges, requiring design verification for specific applications.

All substitute parts maintain the 8-DIP package format, Through Hole mounting, and I2C interface protocol. Variations in voltage supply range, operating temperature, and clock frequency are noted where they differ from the original specification.

Parameter Comparison

Engineering Selection Recommendations

24AA024H-I/P is the closest functional equivalent to AT24C02-10PI-1.8, maintaining identical clock frequency, access time, and operating temperature range. This part is active in production with RoHS3 compliance and represents the primary replacement option for direct substitution in new designs.

24LC02B/P is manufacturer-recommended as an approved substitute with identical electrical performance at 400 kHz operation. This part carries RoHS3 compliance and verified programmability status. The narrower operating temperature range (0°C to 70°C) and higher minimum supply voltage (2.5V) require design verification for applications requiring extended temperature or low-voltage operation.

34LC02-E/P and 34LC02-I/P are manufacturer-recommended alternatives offering enhanced performance with 1 MHz clock frequency and 400 ns access time. Both parts maintain RoHS3 compliance and are suitable for applications requiring faster I2C bus operation. The 34LC02-E/P extends operating temperature to -40°C to 125°C, while 34LC02-I/P maintains -40°C to 85°C compatibility with the original part.

24AA52-I/P is a parametric equivalent maintaining identical electrical specifications to AT24C02-10PI-1.8 with RoHS3 compliance and active production status. This part provides direct parameter matching for applications requiring 1.8V minimum supply voltage and full -40°C to 85°C temperature range.

All substitute parts maintain 8-DIP package format and Through Hole mounting compatibility. Selection should prioritize active production status and RoHS3 compliance for new designs.

Frequently Asked Questions (FAQ)

Q: Can 24AA024H-I/P directly replace AT24C02-10PI-1.8 without design changes?

A: Yes. The 24AA024H-I/P maintains identical clock frequency (400 kHz), access time (900 ns), operating temperature range (-40°C to 85°C), and package format (8-DIP). The slightly lower minimum supply voltage (1.7V vs 1.8V) provides additional design margin. No circuit modifications are required.

Q: What is the difference between 34LC02-E/P and 34LC02-I/P?

A: Both parts operate at 1 MHz clock frequency with 400 ns access time. The primary difference is operating temperature range: 34LC02-E/P supports -40°C to 125°C, while 34LC02-I/P supports -40°C to 85°C. Select 34LC02-E/P for applications requiring extended high-temperature operation.

Q: Is 24LC02B/P suitable for low-voltage applications?

A: No. The 24LC02B/P has a minimum supply voltage of 2.5V, compared to 1.8V for AT24C02-10PI-1.8. Applications requiring operation below 2.5V should use 24AA024H-I/P or 24AA52-I/P instead.

Q: Why is AT24C02-10PI-1.8 marked as obsolete?

A: Obsolete status indicates the part is no longer manufactured by Microchip Technology. Active equivalent parts such as 24AA024H-I/P, 24LC02B/P, and 24AA52-I/P provide continued support for this memory function.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts carry RoHS3 compliance certification. The original AT24C02-10PI-1.8 is RoHS non-compliant, making the active substitutes preferable for applications subject to RoHS requirements.

Q: Can I use 34LC02-E/P in a design originally specified for 400 kHz operation?

A: Yes. The 34LC02-E/P operates at 1 MHz, which is backward compatible with 400 kHz I2C bus specifications. The faster clock frequency and reduced access time (400 ns vs 900 ns) provide performance headroom without requiring design modifications.