AT24C01-10SC-2.7 Equivalent & Substitute Parts

Part Overview

The AT24C01-10SC-2.7 is a 1Kbit EEPROM memory IC utilizing I2C interface protocol with 400 kHz clock frequency, manufactured by Microchip Technology. This component is classified as obsolete, which necessitates identification of functionally equivalent alternatives for ongoing design requirements and production continuity. The part operates across a supply voltage range of 2.7V to 5.5V and is housed in an 8-SOIC surface mount package.

Substiute Parts

AT24C01-10SC-2.7

Microchip TechnologyIn Stock: 2434AT24C01-10SC-2.7 Datasheet

Current PartRFQ

24AA01/SN

Microchip TechnologyIn Stock: 4141124AA01/SN Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AT24C01-10SC-2.7 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), package type (8-SOIC), and mounting method (surface mount). The substitute part 24AA01/SN meets all these core requirements. Additional compatibility factors include voltage supply range compatibility and operating temperature range alignment. The 24AA01/SN maintains functional interchangeability while offering improved product status and compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The 24AA01/SN serves as the primary substitute for the obsolete AT24C01-10SC-2.7. Both components are manufactured by Microchip Technology and maintain identical core memory specifications and package geometry. The 24AA01/SN offers active product status, ensuring continued availability and manufacturing support. The substitute part demonstrates ROHS3 compliance, addressing regulatory requirements that the original part does not satisfy. The extended lower voltage supply range of 1.7V to 5.5V in the 24AA01/SN provides additional operational flexibility. While the 24AA01/SN exhibits longer access time (3500 ns versus 900 ns) and faster write cycle time (5 ms versus 10 ms), these performance characteristics remain within acceptable parameters for I2C EEPROM applications operating at 400 kHz clock frequency.

Frequently Asked Questions (FAQ)

Q: Can the 24AA01/SN directly replace the AT24C01-10SC-2.7 in existing designs?

A: Yes. Both parts share identical memory capacity, organization, interface protocol, clock frequency, and 8-SOIC package dimensions. Pin-to-pin compatibility is maintained, allowing direct substitution on existing PCB layouts without modification.

Q: What are the performance differences between these parts?

A: The 24AA01/SN has a longer access time (3500 ns versus 900 ns) but faster write cycle time (5 ms versus 10 ms). For I2C applications operating at 400 kHz, these timing differences do not impact functional compatibility.

Q: Does the 24AA01/SN support the same voltage range?

A: The 24AA01/SN supports a wider voltage range (1.7V to 5.5V) compared to the AT24C01-10SC-2.7 (2.7V to 5.5V). This provides greater flexibility for low-voltage applications while maintaining full compatibility with designs requiring 2.7V to 5.5V operation.

Q: What is the significance of the RoHS compliance difference?

A: The AT24C01-10SC-2.7 is RoHS non-compliant, while the 24AA01/SN is ROHS3 compliant. For applications subject to RoHS regulations or customer requirements, the 24AA01/SN is the appropriate selection.

Q: Are there packaging differences between these parts?

A: Both parts use 8-SOIC surface mount packaging with identical 0.154" (3.90mm) width. The 24AA01/SN is supplied in tube packaging, while the original part packaging specification is not detailed. No PCB layout modifications are required.