AT34C02-10PC-2.7 Equivalent & Substitute Parts

Part Overview

The AT34C02-10PC-2.7 is a 2Kbit EEPROM memory IC with I2C interface operating at 400 kHz, manufactured by Microchip Technology. This component features 256 x 8 memory organization, 900 ns access time, and operates across a 2.7V to 5.5V supply voltage range in an 8-DIP through-hole package. The part is currently obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations.

Substiute Parts

AT34C02-10PC-2.7

Microchip TechnologyIn Stock: 1122AT34C02-10PC-2.7 Datasheet

Current PartRFQ

24AA02/P

Microchip TechnologyIn Stock: 91124AA02/P Datasheet

DirectRFQ

24LC02B-I/P

Microchip TechnologyIn Stock: 538624LC02B-I/P Datasheet

MFR RecommendedRFQ

24LC02B/P

Microchip TechnologyIn Stock: 1513224LC02B/P Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AT34C02-10PC-2.7 is determined by strict equivalence across the following parameters: memory size (2Kbit), memory organization (256 x 8), I2C interface protocol, 400 kHz clock frequency, 900 ns access time, 8-DIP package configuration, and through-hole mounting. All substitute parts must maintain these core electrical and mechanical specifications to ensure direct functional replacement without circuit modification.

The substitute parts identified—24AA02/P, 24LC02B-I/P, and 24LC02B/P—meet these core requirements. Variations in supply voltage range, operating temperature, write cycle time, product status, and RoHS compliance represent secondary differences that may influence selection based on application requirements but do not prevent functional substitution.

Parameter Comparison

Engineering Selection Recommendations

For applications requiring direct replacement of the obsolete AT34C02-10PC-2.7, the 24LC02B/P offers the closest operational match with identical operating temperature range (0°C ~ 70°C) and supply voltage compatibility (2.5V ~ 5.5V encompasses the original 2.7V minimum). This part is actively manufactured, ROHS3 compliant, and maintains all core electrical parameters.

The 24LC02B-I/P provides extended operating temperature range (-40°C ~ 85°C) suitable for industrial or automotive applications requiring broader thermal performance, while maintaining supply voltage compatibility at 2.5V ~ 5.5V.

The 24AA02/P extends the lower supply voltage limit to 1.7V, enabling operation in low-power applications, and maintains the original operating temperature range. This part is actively manufactured and ROHS3 compliant.

All three substitute parts feature improved write cycle time (5ms versus 10ms), representing enhanced performance over the original component.

Frequently Asked Questions (FAQ)

Q: Can the 24AA02/P replace the AT34C02-10PC-2.7 in existing designs?

A: Yes. The 24AA02/P maintains all core electrical specifications: 2Kbit capacity, 256 x 8 organization, I2C interface at 400 kHz, 900 ns access time, and 8-DIP through-hole package. The extended lower voltage limit (1.7V versus 2.7V) and improved write cycle time (5ms versus 10ms) represent functional enhancements. Operating temperature range matches the original (0°C ~ 70°C).

Q: What is the primary difference between 24LC02B-I/P and 24LC02B/P?

A: Both parts are electrically identical with matching supply voltage (2.5V ~ 5.5V) and write cycle time (5ms). The primary distinction is operating temperature range: 24LC02B-I/P operates from -40°C to 85°C, while 24LC02B/P operates from 0°C to 70°C. Selection depends on application thermal requirements.

Q: Are all substitute parts pin-compatible with the AT34C02-10PC-2.7?

A: Yes. All substitute parts use the 8-DIP (0.300", 7.62mm) through-hole package with identical pinout, enabling direct socket replacement without PCB modification.

Q: Do the substitute parts meet current compliance standards?

A: Yes. All three substitute parts (24AA02/P, 24LC02B-I/P, 24LC02B/P) are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements. The original AT34C02-10PC-2.7 is RoHS non-compliant.

Q: Which substitute part offers the best performance improvement?

A: All substitute parts reduce write cycle time from 10ms to 5ms. The 24LC02B-I/P additionally provides extended operating temperature range (-40°C ~ 85°C) for demanding thermal environments. The 24AA02/P extends lower voltage operation to 1.7V for low-power applications.