Equivalent & Substitute Parts for 34AA02-I/ST

Part Overview

The 34AA02-I/ST is a 2Kbit EEPROM memory IC manufactured by Microchip Technology, featuring I2C interface with 400 kHz clock frequency and 900 ns access time in an 8-TSSOP surface mount package. This part is currently active in production with ROHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified to address supply availability, packaging preferences, or performance requirements while maintaining functional compatibility within the specified electrical and mechanical parameters.

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-TSSOP (0.173", 4.40mm Width)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the 34AA02-I/ST are categorized based on the following substitution criteria:

Parametric Equivalents maintain identical electrical specifications: 2Kbit memory size, 256 x 8 organization, I2C interface, 400 kHz clock frequency, 900 ns access time, 5ms write cycle time, 1.7V–5.5V supply voltage, -40°C to 85°C operating temperature, and 8-TSSOP package. These parts are functionally interchangeable with the main part.

MFR Recommended Substitutes offer enhanced performance characteristics while maintaining core compatibility: 2Kbit memory size, 256 x 8 organization, I2C interface, 8-TSSOP package, and identical supply voltage and temperature ranges. These parts feature 1 MHz clock frequency and 550 ns access time, representing performance improvements over the base specification.

Direct Manufacturer Alternatives from different manufacturers (STMicroelectronics, Rohm Semiconductor, onsemi) provide equivalent or enhanced specifications with identical package and memory organization, ensuring mechanical and electrical compatibility.

Automotive-Grade Variants include AEC-Q100 qualified parts with extended temperature ranges (-40°C to 105°C or 125°C) and enhanced reliability specifications, suitable for automotive applications.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Memory Size	Clock Frequency	Access Time	Voltage Supply	Operating Temperature	Package	Inventory
34AA02-I/ST	Microchip Technology	2Kbit	400 kHz	900 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	671 Pcs
24AA02-I/ST	Microchip Technology	2Kbit	400 kHz	900 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	3200 Pcs
24AA024-I/ST	Microchip Technology	2Kbit	400 kHz	900 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	1342 Pcs
AT24CS02-XHM-T	Microchip Technology	2Kbit	1 MHz	550 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	15684 Pcs
AT24HC02C-XHM-B	Microchip Technology	2Kbit	1 MHz	550 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	2062 Pcs
M34E02-FDW6TP	STMicroelectronics	2Kbit	400 kHz	900 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	41228 Pcs
BR24G02FVT-3GE2	Rohm Semiconductor	2Kbit	400 kHz	Not specified	1.6V ~ 5.5V	-40°C ~ 85°C	8-TSSOP-B	3225 Pcs
BR24G02FVT-3AGE2	Rohm Semiconductor	2Kbit	1 MHz	Not specified	1.6V ~ 5.5V	-40°C ~ 85°C	8-TSSOP-B	2665 Pcs
CAT34C02YI-GT5A	onsemi	2Kbit	400 kHz	900 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	21561 Pcs
M24C02-DRDW3TP/K	STMicroelectronics	2Kbit	1 MHz	450 ns	1.8V ~ 5.5V	-40°C ~ 125°C	8-TSSOP	2628 Pcs
M24C02-DRDW8TP/K	STMicroelectronics	2Kbit	1 MHz	450 ns	1.8V ~ 5.5V	-40°C ~ 105°C	8-TSSOP	6379 Pcs

Engineering Selection Recommendations

Direct Parametric Equivalents (24AA02-I/ST, 24AA024-I/ST, M34E02-FDW6TP, CAT34C02YI-GT5A, BR24G02FVT-3GE2) are suitable for applications requiring identical electrical and thermal specifications. All parts maintain ROHS3 compliance and unlimited moisture sensitivity rating. M34E02-FDW6TP from STMicroelectronics offers the highest inventory availability (41228 Pcs) among parametric equivalents.

Enhanced Performance Substitutes (AT24CS02-XHM-T, AT24HC02C-XHM-B, BR24G02FVT-3AGE2, M24C02-DRDW3TP/K, M24C02-DRDW8TP/K) feature 1 MHz clock frequency and reduced access time (550 ns or 450 ns), providing faster I2C communication while maintaining backward compatibility with 400 kHz bus operation. These parts are suitable for applications benefiting from improved performance margins.

Automotive-Grade Selection (M24C02-DRDW3TP/K, M24C02-DRDW8TP/K) includes AEC-Q100 qualification and extended operating temperature ranges (-40°C to 105°C or 125°C), required for automotive applications. Minimum supply voltage is 1.8V for these variants.

Packaging Considerations: Parts designated with 8-TSSOP-B (Rohm Semiconductor BR24G02 series) use a variant package footprint. Verify PCB layout compatibility before selection. Standard 8-TSSOP packages (0.173", 4.40mm Width) are mechanically interchangeable across all other listed substitutes.

Frequently Asked Questions (FAQ)

Q: Can AT24CS02-XHM-T replace 34AA02-I/ST directly? A: Yes. Both parts share identical memory size (2Kbit), organization (256 x 8), I2C interface, supply voltage range (1.7V–5.5V), operating temperature (-40°C to 85°C), and 8-TSSOP package. AT24CS02-XHM-T offers enhanced clock frequency (1 MHz vs. 400 kHz) and faster access time (550 ns vs. 900 ns), making it a performance-improved substitute. I2C bus speed is determined by the system controller, so the higher device capability is backward compatible.

Q: What is the difference between M34E02-FDW6TP and 34AA02-I/ST? A: Both parts are parametric equivalents with identical electrical specifications: 2Kbit memory, 400 kHz I2C clock, 900 ns access time, 5ms write cycle, 1.7V–5.5V supply, and -40°C to 85°C operating range. M34E02-FDW6TP is manufactured by STMicroelectronics and supplied in Cut Tape & Digi-Reel packaging, while 34AA02-I/ST is Microchip Technology in Tube packaging. M34E02-FDW6TP has significantly higher inventory availability (41228 Pcs).

Q: Are Rohm Semiconductor BR24G02 parts compatible with the 34AA02-I/ST? A: BR24G02FVT-3GE2 is a parametric equivalent with identical memory specifications and 400 kHz clock frequency. BR24G02FVT-3AGE2 offers 1 MHz clock frequency. Both use 8-TSSOP-B package variant with 0.173" width and 4.40mm dimensions. Verify PCB footprint compatibility, as the -B designation indicates a package variant. Supply voltage range is 1.6V–5.5V (vs. 1.7V–5.5V for the main part), providing slightly lower minimum voltage operation.

Q: Which substitute offers the best performance improvement? A: M24C02-DRDW3TP/K and M24C02-DRDW8TP/K provide the most significant performance enhancement with 1 MHz clock frequency, 450 ns access time (vs. 900 ns), and 4ms write cycle time (vs. 5ms). These parts include AEC-Q100 automotive qualification and extended temperature ranges. Minimum supply voltage is 1.8V. Select based on application requirements for automotive-grade reliability or extended temperature operation.

Q: Can I use M24C02-DRDW8TP/K in a consumer application? A: Yes. M24C02-DRDW8TP/K meets all electrical and mechanical requirements for consumer applications. The automotive qualification and extended temperature range (-40°C to 105°C) provide additional design margin. ROHS3 compliance and unlimited moisture sensitivity rating are maintained. Higher performance specifications do not restrict use in non-automotive applications.

Q: What is the significance of the packaging designation (Tube vs. Cut Tape vs. Tape & Reel)? A: Packaging affects supply format and handling. Tube packaging (34AA02-I/ST, 24AA02-I/ST, 24AA024-I/ST) is suitable for lower-volume applications. Cut Tape & Digi-Reel (M34E02-FDW6TP, AT24CS02-XHM-T, CAT34C02YI-GT5A) supports automated assembly lines. Tape & Reel (BR24G02 series, M24C02-DRDW3TP/K, M24C02-DRDW8TP/K) is standard for high-volume production. All formats contain identical components; selection depends on assembly process and volume requirements.

Q: Are all listed substitutes ROHS3 compliant? A: Yes. All parts listed maintain ROHS3 compliance and unlimited moisture sensitivity level (MSL 1). REACH status is unaffected for all substitutes. ECCN classification is EAR99 and HTSUS code is 8542.32.0051 across all parts.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message