AT34C02-10PI-1.8 Equivalent & Substitute Parts

Part Overview

The AT34C02-10PI-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 alternative components for new designs and production continuity. The part features 256 x 8 memory organization, 900 ns access time, and operates across a 1.8V to 5.5V supply voltage range in an 8-DIP through-hole package. Locating equivalent or substitute parts ensures design flexibility and supply chain reliability.

Substiute Parts

AT34C02-10PI-1.8

Microchip TechnologyIn Stock: 752AT34C02-10PI-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

Substitution of the AT34C02-10PI-1.8 is determined by strict equivalence in the following parameters: memory size (2Kbit), memory organization (256 x 8), I2C interface, package type (8-DIP), and mounting method (through hole). The substitute parts are grouped into three categories based on their relationship to the main part:

Direct Manufacturer Equivalent (24AA024H-I/P): Maintains identical memory capacity, organization, I2C interface, and package configuration. This part is functionally interchangeable with improved write cycle time (5 ms vs. 10 ms) and active product status.

Manufacturer Recommended Substitutes (34LC02-E/P, 34LC02-I/P): Share core memory specifications and package type but operate at 1 MHz clock frequency (vs. 400 kHz) with faster access time (400 ns vs. 900 ns). These parts provide enhanced performance characteristics while maintaining I2C protocol compatibility and 8-DIP packaging.

Parametric Equivalent (24AA52-I/P): Matches all critical electrical and mechanical parameters including 400 kHz clock frequency, 900 ns access time, voltage supply range, and 8-DIP package. This part provides direct functional replacement with active product status.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement: The 24AA024H-I/P provides the most straightforward substitution path. It maintains identical clock frequency (400 kHz) and access time (900 ns) specifications, ensuring no timing adjustments are required in existing circuit designs. This part is active in production and ROHS3 compliant, addressing both supply continuity and regulatory requirements.

For Performance Enhancement: The 34LC02-E/P and 34LC02-I/P offer improved performance through 1 MHz clock frequency and 400 ns access time. The 34LC02-E/P extends operating temperature range to 125°C, suitable for industrial applications. Both parts are active and ROHS3 compliant. Circuit timing must be verified to accommodate faster operation.

For Voltage Margin Optimization: The 24AA52-I/P maintains the original 1.8V minimum supply voltage specification, providing the widest voltage compatibility window. This part matches all critical electrical parameters and is active with ROHS3 compliance.

All substitute parts share identical package geometry (8-DIP, 0.300" spacing) and through-hole mounting, enabling direct PCB footprint compatibility without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can the 34LC02-E/P or 34LC02-I/P be used as drop-in replacements for the AT34C02-10PI-1.8?

A: Yes, both parts are electrically and mechanically compatible. The 8-DIP package and I2C interface are identical. However, the 1 MHz clock frequency and 400 ns access time represent performance improvements. Verify that your circuit timing specifications do not impose upper limits on these parameters. The minimum supply voltage increases to 2.2V; confirm your power supply meets this requirement.

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

A: Both parts are parametric equivalents with identical memory specifications, clock frequency, and access time. The 24AA024H-I/P has a minimum supply voltage of 1.7V, while the 24AA52-I/P maintains 1.8V. For applications requiring the lowest supply voltage margin, the 24AA52-I/P is preferred.

Q: Are all substitute parts RoHS compliant?

A: Yes. The AT34C02-10PI-1.8 is RoHS non-compliant. All substitute parts (24AA024H-I/P, 34LC02-E/P, 34LC02-I/P, and 24AA52-I/P) are ROHS3 compliant, meeting current environmental and regulatory standards.

Q: Does package type differ among these parts?

A: No. All parts use the 8-DIP package with 0.300" (7.62mm) spacing and through-hole mounting. PCB footprints are identical, requiring no layout modifications.

Q: Which substitute part should I select for new designs?

A: For new designs, select from the active parts based on your specific requirements. The 24AA024H-I/P provides direct parameter matching. The 34LC02-E/P offers extended temperature range for industrial environments. The 24AA52-I/P maintains the original 1.8V minimum supply voltage. All are ROHS3 compliant and actively manufactured.