Equivalent & Substitute Parts for 24FC64FT-I/ST

Part Overview

The 24FC64FT-I/ST is a 64Kbit EEPROM memory IC manufactured by Microchip Technology, featuring I2C interface with 1 MHz clock frequency and 8-TSSOP surface mount packaging. This part is currently active in production with 885 units in stock. Alternative equivalent and substitute parts are available from multiple manufacturers including STMicroelectronics, ROHM Semiconductor, and onsemi, offering comparable memory capacity, interface protocol, and package specifications with varying performance characteristics and operating conditions.

Substiute Parts

24FC64FT-I/ST

Microchip TechnologyIn Stock: 93124FC64FT-I/ST Datasheet

Current PartRFQ

24AA64T-I/ST

Microchip TechnologyIn Stock: 427424AA64T-I/ST Datasheet

MFR RecommendedRFQ

AT24C64D-XHM-T

Microchip TechnologyIn Stock: 18844AT24C64D-XHM-T Datasheet

MFR RecommendedRFQ

BR24G64FVT-3AGE2

Rohm SemiconductorIn Stock: 7071BR24G64FVT-3AGE2 Datasheet

MFR RecommendedRFQ

BR24G64FVT-3GE2

Rohm SemiconductorIn Stock: 35456BR24G64FVT-3GE2 Datasheet

MFR RecommendedRFQ

BR24S64FVT-WE2

ROHM SemiconductorIn Stock: 3688BR24S64FVT-WE2 Datasheet

MFR RecommendedRFQ

M24C64-DRDW8TP/K

STMicroelectronicsIn Stock: 3707M24C64-DRDW8TP/K Datasheet

MFR RecommendedRFQ

M24C64-FDW6TP

STMicroelectronicsIn Stock: 25462M24C64-FDW6TP Datasheet

MFR RecommendedRFQ

CAT24C64YI-GT3

onsemiIn Stock: 15699CAT24C64YI-GT3 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 24FC64FT-I/ST is determined by the following critical parameters: 64Kbit memory capacity, 8K x 8 memory organization, I2C interface protocol, 8-TSSOP package type, surface mount mounting, and compliance with ROHS3 and REACH standards. Secondary performance parameters including clock frequency, access time, write cycle time, voltage supply range, and operating temperature range define functional compatibility within application-specific requirements.

Substitute parts are grouped into two categories:

Category 1: Full Functional Equivalents (1 MHz Clock Frequency) Parts operating at 1 MHz clock frequency with matching or superior access time specifications, maintaining identical memory capacity and I2C interface characteristics.

Category 2: Parametric Equivalents (400 kHz Clock Frequency) Parts operating at reduced clock frequency with extended access time specifications, suitable for applications where lower I2C bus speed is acceptable or required.

Parameter Comparison

Engineering Selection Recommendations

Direct Functional Equivalents: CAT24C64YI-GT3 (onsemi) and M24C64-FDW6TP (STMicroelectronics) provide direct functional equivalence with identical clock frequency (1 MHz), matching voltage supply range (1.7V ~ 5.5V), and operating temperature range (-40°C ~ 85°C). Both parts maintain ROHS3 compliance and REACH unaffected status. CAT24C64YI-GT3 matches the 400 ns access time specification of the primary part.

Extended Temperature Range Alternative: M24C64-DRDW8TP/K (STMicroelectronics) extends operating temperature to -40°C ~ 105°C with AEC-Q100 automotive qualification, suitable for applications requiring enhanced thermal performance. This part maintains 1 MHz clock frequency and 450 ns access time with reduced write cycle time (4ms).

Reduced Clock Frequency Alternatives: 24AA64T-I/ST (Microchip Technology), BR24G64FVT-3GE2 (ROHM Semiconductor), and BR24S64FVT-WE2 (ROHM Semiconductor) operate at 400 kHz clock frequency with extended access times. These parts are suitable for applications where lower I2C bus speed is acceptable or where power consumption reduction is prioritized.

All substitute parts maintain ROHS3 compliance, REACH unaffected status, and active product status. Selection should be based on specific application requirements for clock frequency, access time, operating temperature range, and supply voltage constraints.

Frequently Asked Questions (FAQ)

Q: Can 24AA64T-I/ST replace 24FC64FT-I/ST in all applications? A: 24AA64T-I/ST operates at 400 kHz clock frequency compared to the primary part's 1 MHz. This substitute is compatible only with applications that do not require 1 MHz I2C bus speed. Both parts share identical memory capacity, organization, voltage supply range, and operating temperature range.

Q: What is the difference between 8-TSSOP and 8-TSSOP-B packages? A: Both package types are 8-pin thin shrink small outline packages with 0.173" width and 4.40mm dimensions. The -B designation indicates ROHM Semiconductor's variant. Physical compatibility should be verified with PCB layout specifications before substitution.

Q: Is M24C64-DRDW8TP/K suitable for automotive applications? A: M24C64-DRDW8TP/K carries AEC-Q100 automotive qualification and extends operating temperature to -40°C ~ 105°C, making it suitable for automotive-grade applications. The primary part 24FC64FT-I/ST does not carry automotive qualification.

Q: What are the voltage supply compatibility considerations? A: The primary part 24FC64FT-I/ST operates from 1.7V ~ 5.5V. Most substitutes maintain this range. BR24G64FVT-3GE2 operates from 1.6V ~ 5.5V (lower minimum). M24C64-DRDW8TP/K operates from 1.8V ~ 5.5V (higher minimum). Verify application supply voltage requirements before selection.

Q: Are all substitute parts ROHS3 compliant? A: All listed substitute parts are ROHS3 compliant and REACH unaffected, matching the primary part's compliance status.

Q: What is the significance of access time differences? A: Access time represents the delay from I2C address/command transmission to data availability. The primary part specifies 400 ns. Substitutes with longer access times (550 ns, 900 ns) may impact system timing in applications with tight read cycle requirements. Verify application timing specifications before substitution.