24LC64FT-E/ST EEPROM Memory IC Equivalent & Substitute Parts

Part Overview

The 24LC64FT-E/ST is a 64Kbit I2C EEPROM memory IC manufactured by Microchip Technology, supplied in 8-TSSOP surface mount packaging via Tape & Reel. This non-volatile memory device operates at 400 kHz I2C clock frequency with 900 ns access time and supports supply voltages from 2.5V to 5.5V across an operating temperature range of -40°C to 125°C. The part is ROHS3 compliant and currently in active production status. Equivalent and substitute parts are identified based on matching memory capacity, interface protocol, package type, and electrical operating parameters to ensure functional interchangeability in circuit applications.

Substiute Parts

24LC64FT-E/ST

Microchip TechnologyIn Stock: 117624LC64FT-E/ST Datasheet

Current PartRFQ

24LC64F-E/ST

Microchip TechnologyIn Stock: 192624LC64F-E/ST Datasheet

DirectRFQ

AT24C64B-10TU-2.7

Microchip TechnologyIn Stock: 3943AT24C64B-10TU-2.7 Datasheet

MFR RecommendedRFQ

24LC64T-E/ST

Microchip TechnologyIn Stock: 337724LC64T-E/ST Datasheet

Parametric EquivalentRFQ

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

BR24T64FVT-WE2

Rohm SemiconductorIn Stock: 17214BR24T64FVT-WE2 Datasheet

MFR RecommendedRFQ

M24C64-DRDW3TP/K

STMicroelectronicsIn Stock: 17324M24C64-DRDW3TP/K Datasheet

MFR RecommendedRFQ

M24C64-DRDW8TP/K

STMicroelectronicsIn Stock: 3707M24C64-DRDW8TP/K Datasheet

MFR RecommendedRFQ

M24C64-FDW6TP

STMicroelectronicsIn Stock: 25462M24C64-FDW6TP Datasheet

MFR RecommendedRFQ

M24C64-RDW6TP

STMicroelectronicsIn Stock: 35300M24C64-RDW6TP Datasheet

MFR RecommendedRFQ

M24C64-WDW6TP

STMicroelectronicsIn Stock: 63513M24C64-WDW6TP Datasheet

MFR RecommendedRFQ

CAV24C64YE-GT3

onsemiIn Stock: 3123CAV24C64YE-GT3 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 24LC64FT-E/ST is determined by the following critical parameters:

Primary Substitution Criteria:

• Memory capacity: 64Kbit
• Memory organization: 8K x 8
• Interface protocol: I2C
• Package type: 8-TSSOP surface mount
• Supply voltage range: Must encompass or overlap with 2.5V ~ 5.5V
• Operating temperature range: Must support -40°C minimum and 125°C maximum, or narrower ranges acceptable for specific applications

Secondary Compatibility Factors:

• Clock frequency: 400 kHz baseline; higher frequencies (1 MHz) remain compatible
• Access time: 900 ns baseline; faster access times acceptable
• Write cycle time: 5ms baseline; faster write cycles acceptable
• Packaging format: Tape & Reel, Cut Tape, or Tube formats are interchangeable for component selection

Substitute parts are grouped into three categories: Direct Manufacturer Equivalents (identical electrical specifications, different packaging), Manufacturer Recommended Alternatives (same base functionality with minor parameter variations), and Parametric Equivalents (functionally compatible with allowable parameter deviations).

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalents (Microchip Technology): The 24LC64F-E/ST, 24LC64T-E/ST, and 24LC64FT-E/ST are functionally identical across all electrical parameters. Selection between these parts depends solely on packaging format requirements: Tape & Reel for automated assembly, Cut Tape & Digi-Reel for mixed-volume production, or Tube for manual handling. All three maintain ROHS3 compliance and active product status.

Microchip AT24C64B-10TU-2.7: This part is compatible with the 24LC64FT-E/ST for applications operating within the narrower voltage range of 2.7V to 5.5V and temperature range of -40°C to 85°C. The AT24C64B maintains identical memory capacity, organization, and I2C interface specifications. Selection is appropriate when supply voltage does not drop below 2.7V and operating temperature does not exceed 85°C.

Rohm Semiconductor BR24 Series (BR24G64FVT-3AGE2, BR24G64FVT-3GE2, BR24S64FVT-WE2, BR24T64FVT-WE2): These parts provide 64Kbit I2C EEPROM functionality in 8-TSSOP-B packaging with extended lower voltage support (1.6V to 1.7V minimum). The BR24G64FVT-3AGE2 and BR24G64FVT-3GE2 operate at 1 MHz and 400 kHz respectively, both with -40°C to 85°C temperature range. BR24S64FVT-WE2 and BR24T64FVT-WE2 operate at 400 kHz with 1.7V and 1.6V minimum supply voltages respectively. These parts are suitable for low-voltage applications but operate within a narrower maximum temperature range (-40°C to 85°C).

STMicroelectronics M24C64 Series (M24C64-DRDW3TP/K, M24C64-DRDW8TP/K, M24C64-FDW6TP): These automotive-grade parts (AEC-Q100 qualified) provide 64Kbit I2C EEPROM with 1 MHz clock frequency and 450 ns access time. M24C64-DRDW3TP/K supports -40°C to 125°C operation matching the original part's temperature range, while M24C64-DRDW8TP/K and M24C64-FDW6TP operate to 105°C and 85°C respectively. All three support 1.7V to 1.8V minimum supply voltage. These parts are appropriate for automotive applications or where faster I2C clock speeds and reduced access times are required.

Frequently Asked Questions (FAQ)

Q: Can I substitute 24LC64F-E/ST for 24LC64FT-E/ST? A: Yes. Both parts are manufactured by Microchip Technology with identical electrical specifications (64Kbit, 400 kHz I2C, 900 ns access time, 2.5V to 5.5V supply, -40°C to 125°C operation). The difference is packaging format: 24LC64F-E/ST is supplied in Tube format while 24LC64FT-E/ST is Tape & Reel. Component selection depends on assembly process requirements.

Q: What is the difference between 24LC64T-E/ST and 24LC64FT-E/ST? A: Both parts have identical electrical specifications and are ROHS3 compliant. The 24LC64T-E/ST is supplied in Cut Tape & Digi-Reel format and is DiGi-Electronics Programmable Verified, while 24LC64FT-E/ST is Tape & Reel format. Electrical performance is equivalent.

Q: Can I use AT24C64B-10TU-2.7 in place of 24LC64FT-E/ST? A: AT24C64B-10TU-2.7 is compatible if your application operates within 2.7V to 5.5V supply voltage and -40°C to 85°C temperature range. The original 24LC64FT-E/ST supports lower supply voltage (2.5V minimum) and higher temperature (125°C maximum). Use AT24C64B-10TU-2.7 only when these narrower specifications are acceptable.

Q: Are Rohm BR24 series parts compatible with 24LC64FT-E/ST? A: Rohm BR24 series parts (BR24G64FVT-3GE2, BR24S64FVT-WE2, BR24T64FVT-WE2) provide 64Kbit I2C EEPROM functionality in 8-TSSOP-B packaging with 400 kHz operation. They are compatible for applications operating within -40°C to 85°C. However, they do not support the full 125°C maximum temperature of the original part and have higher minimum supply voltage requirements (1.6V to 1.7V vs. 2.5V).

Q: What are the advantages of STMicroelectronics M24C64 series parts? A: M24C64 series parts offer 1 MHz I2C clock frequency (versus 400 kHz) and 450 ns access time (versus 900 ns), providing faster data transfer. M24C64-DRDW3TP/K maintains the full -40°C to 125°C temperature range. All M24C64 parts are AEC-Q100 automotive qualified. These parts are suitable for applications requiring higher I2C speeds or automotive-grade reliability.

Q: Can I use M24C64-FDW6TP if my application requires 125°C operation? A: No. M24C64-FDW6TP operates only to 85°C maximum. For 125°C operation, use M24C64-DRDW3TP/K, which supports -40°C to 125°C and maintains automotive qualification.

Q: What packaging formats are available for 64Kbit I2C EEPROM substitutes? A: Available formats include Tape & Reel (TR) for high-volume automated assembly, Cut Tape & Digi-Reel (CT) for mixed-volume production, and Tube for manual handling. All formats contain the same component; selection depends on manufacturing process and volume requirements.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitute parts maintain ROHS3 compliance status, matching the original 24LC64FT-E/ST specification.