Equivalent & Substitute Parts for 24AA024HT-I/MS

Part Overview

The 24AA024HT-I/MS is a 2Kbit EEPROM memory IC manufactured by Microchip Technology, featuring I2C interface operation at 400 kHz with 900 ns access time. This device is packaged in 8-MSOP (0.118", 3.00mm Width) and is actively produced. The part operates across a supply voltage range of 1.7V to 5.5V and temperature range of -40°C to 85°C, making it suitable for general-purpose embedded systems and consumer electronics applications. Equivalent and substitute parts are identified based on matching core electrical parameters and mechanical compatibility within the 2Kbit I2C EEPROM category.

Key Parameters

Parameter	Value
Memory Size	2Kbit
Memory Organization	256 x 8
Memory Interface	I2C
Clock Frequency	400 kHz
Access Time	900 ns
Write Cycle Time	5ms
Voltage Supply Range	1.7V ~ 5.5V
Operating Temperature	-40°C ~ 85°C
Package Type	8-MSOP (0.118", 3.00mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution for the 24AA024HT-I/MS is determined by strict equivalence across the following critical parameters:

Primary Equivalence Criteria:

Memory Size: 2Kbit
Memory Organization: 256 x 8
Memory Interface: I2C
Write Cycle Time: 5ms
Package Type: 8-MSOP or compatible 8-pin surface mount packages
RoHS Compliance: ROHS3 Compliant

Secondary Compatibility Factors:

Clock Frequency: 400 kHz (primary specification); higher frequencies (1 MHz) are backward compatible
Voltage Supply Range: Minimum 1.7V required; extended ranges acceptable
Operating Temperature: -40°C to 85°C baseline; extended ranges acceptable
Access Time: 900 ns baseline; faster access times acceptable
Product Status: Active status preferred; Not For New Designs parts available for legacy applications

Substitutes are grouped into three categories: Microchip parametric equivalents with identical specifications, Rohm Semiconductor manufacturer-recommended alternatives, and STMicroelectronics automotive-grade options. All listed substitutes maintain full electrical and mechanical compatibility with the 24AA024HT-I/MS within their specified operating parameters.

Parameter Comparison

Part Number	Manufacturer	Memory Size	Clock Frequency	Access Time	Voltage Supply	Operating Temp	Package	Product Status	Programmable Verified
24AA024HT-I/MS	Microchip Technology	2Kbit	400 kHz	900 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-MSOP	Active	Verified
24AA024T-I/MS	Microchip Technology	2Kbit	400 kHz	900 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-MSOP	Active	Verified
24AA02T-I/MS	Microchip Technology	2Kbit	400 kHz	900 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-MSOP	Active	Verified
BR24A02FVM-WMTR	Rohm Semiconductor	2Kbit	400 kHz	Not specified	2.5V ~ 5.5V	-40°C ~ 105°C	8-MSOP	Active	Not Verified
BR24G02FVJ-3AGTE2	Rohm Semiconductor	2Kbit	1 MHz	Not specified	1.6V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Active	Not Verified
BR24G02FVJ-3GTE2	Rohm Semiconductor	2Kbit	400 kHz	Not specified	1.6V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Not For New Designs	Not Verified
BR24G02FVM-3GTTR	Rohm Semiconductor	2Kbit	400 kHz	Not specified	1.6V ~ 5.5V	-40°C ~ 85°C	8-MSOP	Active	Not Verified
BR24L02FVM-WTR	Rohm Semiconductor	2Kbit	400 kHz	Not specified	1.8V ~ 5.5V	-40°C ~ 85°C	8-MSOP	Active	Verified
BR24T02FVJ-WE2	Rohm Semiconductor	2Kbit	400 kHz	Not specified	1.6V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Not For New Designs	Not Verified
BR34E02FVT-3E2	Rohm Semiconductor	2Kbit	400 kHz	Not specified	1.7V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Active	Not Verified
M24C02-DRDW3TP/K	STMicroelectronics	2Kbit	1 MHz	450 ns	1.8V ~ 5.5V	-40°C ~ 125°C	8-TSSOP	Active	Not Verified

Engineering Selection Recommendations

Microchip Technology Equivalents (Highest Compatibility)

The 24AA024T-I/MS and 24AA02T-I/MS are direct parametric equivalents to the 24AA024HT-I/MS. Both parts share identical electrical specifications, voltage supply range, operating temperature, and package type. The primary difference is packaging format: 24AA024HT-I/MS is supplied in Tape & Reel (TR), while 24AA024T-I/MS and 24AA02T-I/MS are supplied in Cut Tape (CT) & Digi-Reel. Both substitute parts carry DiGi-Electronics Programmable verification status, matching the original part's qualification level. These are the preferred substitutes for direct replacement in active production designs.

Rohm Semiconductor Alternatives (Verified and Active)

BR24L02FVM-WTR is the primary Rohm substitute, offering identical 400 kHz clock frequency and 5ms write cycle time. This part carries DiGi-Electronics Programmable verification and is actively produced. The voltage supply range is 1.8V to 5.5V (compared to 1.7V minimum on the original), which is acceptable for most applications. Package type is 8-MSOP with 0.110" width versus 0.118" on the original, representing a minor mechanical variation within standard PCB layout tolerances.

BR24G02FVM-3GTTR provides an alternative with identical electrical specifications and 8-MSOP packaging. This part is actively produced but lacks programmable verification. The voltage supply range extends to 1.6V minimum, providing broader low-voltage compatibility.

BR24A02FVM-WMTR offers extended operating temperature range (-40°C to 105°C) and carries AEC-Q100 automotive qualification. This part is suitable for applications requiring automotive-grade reliability, though the minimum voltage supply is 2.5V, which may limit use in low-voltage systems.

Parts Not Recommended for New Designs

BR24G02FVJ-3GTE2 and BR24T02FVJ-WE2 are marked as Not For New Designs. These parts remain available for legacy system support and field replacements but should not be selected for new product development.

STMicroelectronics Automotive Option

M24C02-DRDW3TP/K is an automotive-grade part with AEC-Q100 qualification and extended operating temperature range (-40°C to 125°C). This part operates at 1 MHz clock frequency, providing faster I2C communication than the 400 kHz baseline. The 450 ns access time is faster than the 900 ns specification of the original part. Package type is 8-TSSOP (0.173" width), which differs from the original 8-MSOP. This part is suitable for automotive applications requiring higher performance and extended temperature operation.

Frequently Asked Questions (FAQ)

Q: Can I use a 1 MHz I2C EEPROM as a substitute for the 400 kHz 24AA024HT-I/MS?

A: Yes. Higher clock frequency devices are backward compatible with 400 kHz I2C bus specifications. The BR24G02FVJ-3AGTE2 and M24C02-DRDW3TP/K both operate at 1 MHz and will function correctly on a 400 kHz I2C bus. The bus will operate at the lower speed determined by the master controller.

Q: What is the difference between 8-MSOP and 8-TSSOP packages?

A: Both are 8-pin surface mount packages with different physical dimensions. 8-MSOP (0.118" width) and 8-VSSOP (0.110" width) are narrower packages suitable for compact PCB layouts. 8-TSSOP (0.173" width) is a wider package. PCB footprints are not interchangeable; verify your design accommodates the selected package type before substitution.

Q: Is the Rohm BR24L02FVM-WTR a direct replacement for the Microchip 24AA024HT-I/MS?

A: The BR24L02FVM-WTR is electrically equivalent and carries DiGi-Electronics Programmable verification. The minimum voltage supply is 1.8V versus 1.7V on the original part. If your application operates below 1.8V, this substitute is not suitable. Package dimensions differ slightly (0.110" versus 0.118" width), but both are standard 8-MSOP variants compatible with typical PCB layouts.

Q: Can I use the STMicroelectronics M24C02-DRDW3TP/K in a consumer electronics application?

A: Yes. Although this part carries automotive qualification (AEC-Q100), it is fully functional in consumer applications. The extended temperature range (-40°C to 125°C) and faster performance provide additional margin. The 8-TSSOP package requires PCB footprint verification before substitution.

Q: What does "Not For New Designs" mean for BR24G02FVJ-3GTE2 and BR24T02FVJ-WE2?

A: Parts marked "Not For New Designs" are in mature or declining production phases. These parts remain available for existing product support and field replacements but should not be selected for new product development. Use active-status alternatives for new designs.

Q: Are all listed substitutes RoHS3 compliant?

A: Yes. All substitute parts listed carry ROHS3 Compliant status, matching the original 24AA024HT-I/MS specification.

Q: What is the significance of "DiGi-Electronics Programmable Verified" status?

A: This designation indicates the part has been tested and verified for programmability by DiGi-Electronics. Parts with Verified status (24AA024HT-I/MS, 24AA024T-I/MS, 24AA02T-I/MS, BR24L02FVM-WTR) provide higher confidence in functional compatibility. Parts marked "Not Verified" have not undergone this specific testing but remain electrically equivalent.

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