FT24C08A-UNR-T EEPROM Memory IC Equivalent & Substitute Parts

Part Overview

The FT24C08A-UNR-T is an 8Kbit EEPROM memory integrated circuit manufactured by Fremont Micro Devices Ltd. This non-volatile memory device operates via I2C interface at 1 MHz clock frequency and is packaged in an 8-DFN (2x3) surface mount configuration. The part is currently discontinued at DiGi Electronics, making identification of equivalent and substitute components essential for ongoing design support, production continuity, and system maintenance.

Substiute Parts

FT24C08A-UNR-T

Fremont Micro Devices LtdIn Stock: 702FT24C08A-UNR-T Datasheet

Current PartRFQ

FT24C08A-ENR-T

Fremont Micro Devices LtdIn Stock: 984FT24C08A-ENR-T Datasheet

Parametric EquivalentRFQ

M24C08-DRMF3TG/K

STMicroelectronicsIn Stock: 205119M24C08-DRMF3TG/K Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the FT24C08A-UNR-T is determined by strict alignment of the following critical parameters:

Memory Capacity & Organization: All substitute parts must provide 8Kbit capacity with 1K x 8 organization to ensure direct functional equivalence.

Interface Protocol: I2C interface is mandatory. No alternative serial protocols are acceptable.

Clock Frequency: 1 MHz operation is required for timing-critical applications.

Voltage Supply Range: Substitute parts must support the full 1.8V ~ 5.5V range or a range that encompasses the application's operating voltage.

Package & Mounting: Surface mount 8-pin packages with compatible pinout and footprint are required.

Compliance Standards: RoHS3 compliance is mandatory for regulatory alignment.

Substitutes are grouped into two categories: parametric equivalents (identical specifications from the same manufacturer) and similar alternatives (functionally equivalent parts from different manufacturers with minor specification variations).

Parameter Comparison

Engineering Selection Recommendations

FT24C08A-ENR-T (Parametric Equivalent): This part is the direct parametric equivalent from Fremont Micro Devices Ltd with identical electrical and mechanical specifications. The primary distinction is active product status with 941 pieces in stock inventory, compared to the discontinued FT24C08A-UNR-T. This part is the preferred choice for direct replacement in existing designs without modification.

M24C08-DRMF3TG/K (Similar Alternative): This STMicroelectronics part meets all critical substitution criteria with improved performance characteristics: 450 ns access time (versus 550 ns), 4 ms write cycle time (versus 5 ms), and extended operating temperature range to 125°C. The voltage supply range is 1.7V ~ 5.5V, which is compatible with applications operating at 1.8V and above. AEC-Q100 automotive qualification provides additional reliability assurance. This part is suitable for applications requiring enhanced performance margins or automotive-grade reliability. Inventory availability is significantly higher at 205,100 pieces.

Both substitute parts maintain full I2C protocol compatibility, identical memory capacity and organization, and equivalent package footprints. Selection between them depends on design requirements for performance headroom, temperature operating range, and supply chain availability.

Frequently Asked Questions (FAQ)

Q: Can the FT24C08A-ENR-T directly replace the FT24C08A-UNR-T without PCB modifications?

A: Yes. The FT24C08A-ENR-T is a parametric equivalent with identical electrical specifications, memory organization, I2C interface, clock frequency, voltage supply range, and package type. No circuit modifications or PCB layout changes are required.

Q: What are the key differences between the FT24C08A-ENR-T and M24C08-DRMF3TG/K?

A: Both parts provide 8Kbit I2C EEPROM functionality in compatible packages. The M24C08-DRMF3TG/K offers faster access time (450 ns vs. 550 ns), shorter write cycle time (4 ms vs. 5 ms), and extended operating temperature range (-40°C to 125°C vs. -40°C to 85°C). The M24C08 also carries AEC-Q100 automotive qualification. The FT24C08A-ENR-T maintains identical specifications to the original part.

Q: Is the M24C08-DRMF3TG/K compatible with designs specified for 1.8V minimum supply voltage?

A: The M24C08-DRMF3TG/K operates at 1.7V minimum, which is below the 1.8V specification. For applications with strict 1.8V minimum requirements, verify that the 1.7V minimum does not introduce unintended operational modes. The FT24C08A-ENR-T maintains the 1.8V minimum specification.

Q: Are all three parts RoHS3 compliant?

A: Yes. All three parts—FT24C08A-UNR-T, FT24C08A-ENR-T, and M24C08-DRMF3TG/K—are ROHS3 compliant and suitable for applications with RoHS regulatory requirements.

Q: What is the significance of AEC-Q100 qualification on the M24C08-DRMF3TG/K?

A: AEC-Q100 is an automotive industry qualification standard that certifies component reliability under automotive operating conditions. This qualification is relevant only for automotive applications. Non-automotive designs do not require this certification.

Q: Can I use the M24C08-DRMF3TG/K in applications originally designed for the FT24C08A-UNR-T?

A: Yes, provided the application does not depend on the specific access time or write cycle time of the original part. The M24C08-DRMF3TG/K's faster performance (450 ns access time, 4 ms write cycle) is backward compatible with designs specified for 550 ns access time and 5 ms write cycle. Verify that the 1.7V minimum supply voltage is acceptable for your application.

Q: What inventory considerations should guide part selection?

A: The FT24C08A-UNR-T is discontinued. The FT24C08A-ENR-T has 941 pieces in stock, and the M24C08-DRMF3TG/K has 205,100 pieces in stock. For long-term production continuity, the M24C08-DRMF3TG/K offers superior supply availability.