Equivalent & Substitute Parts for 24AA024H-I/ST

Part Overview

The 24AA024H-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 Active status and ROHS3 compliant. Substitute parts are identified when equivalent electrical and mechanical parameters are maintained within the allowed specifications for this EEPROM category, ensuring functional interchangeability in I2C-based memory applications.

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 / Case	8-TSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution logic for the 24AA024H-I/ST is based on the following critical parameters: 2Kbit memory capacity, 256 x 8 organization, I2C interface, 8-TSSOP package, and surface mount technology. Parts are grouped into three categories:

MFR Recommended Substitutes maintain all electrical parameters while offering enhanced performance (1 MHz clock frequency, 550 ns access time) or alternative packaging options. These parts are directly recommended by manufacturers for drop-in replacement.

Parametric Equivalents match the original part's electrical specifications exactly, including 400 kHz clock frequency and 900 ns access time, with identical voltage and temperature ranges.

Direct Manufacturer Alternatives from different manufacturers (STMicroelectronics, Rohm Semiconductor, onsemi) provide equivalent functionality with identical or compatible electrical characteristics and the same 8-TSSOP package footprint.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Memory Size	Clock Frequency	Access Time	Voltage Supply	Operating Temperature	Package	Inventory Status
24AA024H-I/ST	Microchip Technology	2Kbit	400 kHz	900 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	1108 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
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
M34E02-FDW6TP	STMicroelectronics	2Kbit	400 kHz	900 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	41228 Pcs
BR24G02FVT-3AGE2	Rohm Semiconductor	2Kbit	1 MHz	Not specified	1.6V ~ 5.5V	-40°C ~ 85°C	8-TSSOP-B	2665 Pcs
BR24G02FVT-3GE2	Rohm Semiconductor	2Kbit	400 kHz	Not specified	1.6V ~ 5.5V	-40°C ~ 85°C	8-TSSOP-B	3225 Pcs
BR34E02FVT-3E2	Rohm Semiconductor	2Kbit	400 kHz	Not specified	1.7V ~ 5.5V	-40°C ~ 85°C	8-TSSOP-B	976 Pcs
CAT34C02YI-GT5A	onsemi	2Kbit	400 kHz	900 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	21561 Pcs
CAV24C02YE-GT3	onsemi	2Kbit	400 kHz	900 ns	2.5V ~ 5.5V	-40°C ~ 125°C	8-TSSOP	17088 Pcs

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications): Select 24AA02-I/ST, 24AA024-I/ST, M34E02-FDW6TP, CAT34C02YI-GT5A, or CAV24C02YE-GT3. These parts maintain 400 kHz clock frequency, 900 ns access time, and identical voltage/temperature ranges. All are Active status and ROHS3 compliant. M34E02-FDW6TP from STMicroelectronics offers the highest inventory (41228 Pcs) and is DiGi-Electronics Programmable Verified.

For Enhanced Performance: Select AT24CS02-XHM-T or AT24HC02C-XHM-B. These Microchip parts provide 1 MHz clock frequency and 550 ns access time while maintaining voltage and temperature compatibility. Both are Active status and ROHS3 compliant. AT24CS02-XHM-T has superior inventory availability (15684 Pcs).

For Automotive Applications: CAV24C02YE-GT3 from onsemi is AEC-Q100 qualified with extended operating temperature range (-40°C ~ 125°C), suitable for automotive-grade requirements.

For Rohm Semiconductor Preference: BR24G02FVT-3GE2 or BR34E02FVT-3E2 provide 400 kHz operation matching the original part, with BR24G02FVT-3AGE2 offering 1 MHz performance. All use 8-TSSOP-B package variant with voltage range 1.6V ~ 5.5V.

Frequently Asked Questions (FAQ)

Q: Can AT24CS02-XHM-T replace 24AA024H-I/ST directly? A: Yes. Both are 2Kbit I2C EEPROM in 8-TSSOP package with identical voltage (1.7V ~ 5.5V) and temperature (-40°C ~ 85°C) ranges. AT24CS02-XHM-T offers faster clock frequency (1 MHz vs 400 kHz) and access time (550 ns vs 900 ns), making it a compatible upgrade.

Q: What is the difference between 8-TSSOP and 8-TSSOP-B packages? A: Both are 8-pin thin shrink small outline packages with 0.173" width and 4.40mm width specification. The -B variant indicates a package body style variant from Rohm Semiconductor. Physical footprint compatibility should be verified with PCB layout requirements.

Q: Are Rohm BR24G02 parts compatible with the original Microchip part? A: Yes. BR24G02FVT-3GE2 matches 400 kHz clock frequency and provides identical 2Kbit capacity with I2C interface in 8-TSSOP-B package. Voltage range is 1.6V ~ 5.5V, which overlaps the original 1.7V ~ 5.5V specification.

Q: Which substitute has the best inventory availability? A: M34E02-FDW6TP from STMicroelectronics has 41228 Pcs in stock, the highest among all substitutes. CAT34C02YI-GT5A from onsemi has 21561 Pcs available.

Q: Can I use CAV24C02YE-GT3 in non-automotive applications? A: Yes. CAV24C02YE-GT3 is AEC-Q100 qualified for automotive use but functions as a standard 2Kbit I2C EEPROM in any application. Its extended temperature range (-40°C ~ 125°C) provides additional margin beyond the original -40°C ~ 85°C specification.

Q: What is the significance of DiGi-Electronics Programmable Verified status? A: M34E02-FDW6TP is verified as programmable through DiGi-Electronics systems, indicating validated supply chain and programming compatibility. Other parts show "Not Verified" status, meaning this verification has not been performed.

Q: Are all substitutes ROHS3 compliant? A: Yes. All listed substitute parts maintain ROHS3 compliance matching the original 24AA024H-I/ST specification.

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