Equivalent & Substitute Parts for 24AA52-I/MS

Part Overview

The 24AA52-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 non-volatile memory device is housed in an 8-MSOP package and operates across a supply voltage range of 1.8V to 5.5V with an operating temperature range of -40°C to 85°C. The part is currently in active production status and ROHS3 compliant.

Substitute parts are necessary when the primary part experiences supply constraints, extended lead times, or when design requirements necessitate alternative manufacturers or enhanced specifications such as higher clock frequencies, extended temperature ranges, or automotive-grade qualifications.

Key Parameters

Parameter	24AA52-I/MS
Memory Size	2Kbit
Memory Organization	256 x 8
Memory Interface	I2C
Clock Frequency	400 kHz
Access Time	900 ns
Write Cycle Time	5 ms
Voltage Supply Range	1.8V ~ 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
Product Status	Active

Substitute Part Grouping Explanation

Substitution eligibility for the 24AA52-I/MS is determined by the following critical parameters:

Core Compatibility Requirements:

Memory Size: 2Kbit (256 x 8 organization)
Memory Interface: I2C protocol
Package Type: 8-MSOP or 8-TSSOP (mechanically compatible footprints)
Voltage Supply Range: Must encompass or overlap with 1.8V ~ 5.5V
Write Cycle Time: 5 ms maximum
RoHS Compliance: ROHS3 Compliant

Acceptable Variations:

Clock Frequency: 400 kHz minimum (higher frequencies such as 1 MHz are backward compatible)
Access Time: 900 ns or faster
Operating Temperature: May extend beyond -40°C ~ 85°C range
Automotive Grade/AEC-Q100: Optional enhancement
Packaging Format: Tube or Tape & Reel acceptable

The substitute parts listed below meet these core requirements while maintaining functional and electrical compatibility with the 24AA52-I/MS.

Parameter Comparison

Part Number	Manufacturer	Memory Size	Clock Frequency	Access Time	Voltage Supply	Operating Temp	Package	Product Status
24AA52-I/MS	Microchip Technology	2Kbit	400 kHz	900 ns	1.8V ~ 5.5V	-40°C ~ 85°C	8-MSOP	Active
24AA02-I/MS	Microchip Technology	2Kbit	400 kHz	900 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-MSOP	Active
24AA025-I/MS	Microchip Technology	2Kbit	400 kHz	900 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-MSOP	Active
BR24A02FVM-WMTR	Rohm Semiconductor	2Kbit	400 kHz	Not specified	2.5V ~ 5.5V	-40°C ~ 105°C	8-MSOP	Active
BR24G02FVJ-3AGTE2	Rohm Semiconductor	2Kbit	1 MHz	Not specified	1.6V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Active
BR24G02FVJ-3GTE2	Rohm Semiconductor	2Kbit	400 kHz	Not specified	1.6V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Not For New Designs
BR24G02FVM-3GTTR	Rohm Semiconductor	2Kbit	400 kHz	Not specified	1.6V ~ 5.5V	-40°C ~ 85°C	8-MSOP	Active
BR24L02FVJ-WE2	Rohm Semiconductor	2Kbit	400 kHz	Not specified	1.8V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Not For New Designs
BR24L02FVM-WTR	Rohm Semiconductor	2Kbit	400 kHz	Not specified	1.8V ~ 5.5V	-40°C ~ 85°C	8-MSOP	Active
BR24T02FVJ-WE2	Rohm Semiconductor	2Kbit	400 kHz	Not specified	1.6V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Not For New Designs
M24C02-DRDW3TP/K	STMicroelectronics	2Kbit	1 MHz	450 ns	1.8V ~ 5.5V	-40°C ~ 125°C	8-TSSOP	Active

Engineering Selection Recommendations

Microchip Technology Substitutes (24AA02-I/MS, 24AA025-I/MS): These parts maintain identical electrical specifications to the 24AA52-I/MS with the same 400 kHz clock frequency, 900 ns access time, and 8-MSOP package. Both are in active production status. The 24AA025-I/MS carries DiGi-Electronics Programmable verification, providing additional qualification assurance. Selection between these Microchip alternatives depends on inventory availability and verification requirements.

Rohm Semiconductor Substitutes (BR24G02FVM-3GTTR, BR24L02FVM-WTR): These parts offer 2Kbit I2C EEPROM functionality in 8-MSOP packages with 400 kHz operation and active product status. BR24G02FVM-3GTTR supports a lower minimum supply voltage (1.6V) compared to the original part. BR24L02FVM-WTR matches the 1.8V minimum supply voltage of the 24AA52-I/MS and carries DiGi-Electronics Programmable verification. Both are suitable for direct substitution in active designs.

Enhanced Performance Alternatives (BR24G02FVJ-3AGTE2, M24C02-DRDW3TP/K): These parts provide higher clock frequency operation at 1 MHz, enabling faster I2C communication while maintaining 2Kbit capacity and backward compatibility. The M24C02-DRDW3TP/K from STMicroelectronics includes automotive-grade qualification (AEC-Q100) and extended operating temperature range (-40°C to 125°C), suitable for automotive and industrial applications. The BR24G02FVJ-3AGTE2 from Rohm Semiconductor offers similar performance enhancements with 1 MHz operation.

Legacy Parts (BR24G02FVJ-3GTE2, BR24L02FVJ-WE2, BR24T02FVJ-WE2): These parts are marked "Not For New Designs" and should be avoided in new circuit designs despite functional compatibility. Existing designs currently using these parts may continue operation, but migration to active-status alternatives is recommended for long-term supply security.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with a higher clock frequency (1 MHz) in place of the 400 kHz 24AA52-I/MS?

A: Yes. Higher clock frequency parts such as BR24G02FVJ-3AGTE2 and M24C02-DRDW3TP/K are backward compatible with 400 kHz I2C bus designs. The I2C protocol allows devices to operate at lower bus speeds than their maximum rated frequency. No circuit modifications are required.

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 measures 0.118" (3.00mm) width, while 8-TSSOP measures 0.173" (4.40mm) width. These packages are not mechanically interchangeable on the same PCB footprint. Verify your circuit board layout supports the selected package type before substitution.

Q: Are Rohm Semiconductor BR24 series parts fully compatible with Microchip 24AA series parts?

A: Yes, within the specified electrical parameters. Both manufacturers produce 2Kbit I2C EEPROM devices with identical memory organization (256 x 8), interface protocol, and write cycle timing. Electrical compatibility is confirmed when voltage supply ranges overlap and clock frequency requirements are met. Physical package compatibility must be verified separately.

Q: Why do some substitute parts have lower minimum supply voltage (1.6V) than the original 24AA52-I/MS (1.8V)?

A: Lower minimum supply voltage specifications indicate enhanced performance under low-voltage conditions. Parts rated for 1.6V minimum supply are fully compatible with designs requiring 1.8V operation. This represents a superset of functionality and poses no compatibility risk.

Q: Should I select an automotive-grade part like M24C02-DRDW3TP/K for non-automotive applications?

A: Automotive-grade parts with AEC-Q100 qualification undergo additional reliability testing and are suitable for any application. Selection should be based on availability, cost, and performance requirements rather than application type. The extended temperature range (-40°C to 125°C) of automotive parts provides additional margin in high-temperature environments.

Q: What does "Not For New Designs" status mean for BR24 parts?

A: This designation indicates the manufacturer is discontinuing the product line. Existing inventory may be available, but these parts should not be selected for new circuit designs due to uncertain long-term supply. Active-status alternatives from the same manufacturer are recommended.

Q: Can I mix different manufacturers' EEPROM parts on the same I2C bus?

A: Yes. Multiple EEPROM devices from different manufacturers can coexist on a single I2C bus provided each device has a unique I2C address and all devices operate within the specified I2C voltage and frequency parameters. Address conflicts must be avoided through proper hardware configuration.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message