24LC024HT-I/MNY EEPROM Memory IC Equivalent & Substitute Parts

Part Overview

The 24LC024HT-I/MNY is a 2Kbit I2C EEPROM memory IC manufactured by Microchip Technology, supplied in 8-TDFN (2x3) surface mount packaging. This non-volatile memory device operates at 1 MHz clock frequency with 400 ns access time and supports supply voltages from 2.5V to 5.5V across an operating temperature range of -40°C to 85°C. The device is ROHS3 compliant with unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified based on functional equivalence in memory capacity, interface protocol, package type, and electrical operating parameters.

Key Parameters

Parameter	Value
Memory Type	Non-Volatile EEPROM
Memory Size	2Kbit
Memory Organization	256 x 8
Interface	I2C
Clock Frequency	1 MHz
Access Time	400 ns
Write Cycle Time	5 ms
Supply Voltage Range	2.5V ~ 5.5V
Operating Temperature	-40°C ~ 85°C
Package Type	8-TDFN (2x3)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the 24LC024HT-I/MNY are grouped based on the following substitution criteria:

Primary Substitution Parameters:

Memory capacity: 2Kbit (256 x 8 organization)
Interface protocol: I2C
Package type: 8-TDFN (2x3) or 8-UDFN (2x3) surface mount
Write cycle time: 5 ms
RoHS compliance: ROHS3 Compliant
Moisture sensitivity: MSL 1 or MSL 3

Secondary Compatibility Factors:

Clock frequency: 1 MHz (primary part) or 400 kHz (lower-speed alternatives)
Access time: 400 ns (primary part) or 550-900 ns (acceptable alternatives)
Supply voltage range: 2.5V ~ 5.5V (primary part) or 1.7V ~ 5.5V (wider range alternatives)
Operating temperature: -40°C ~ 85°C (primary part) or -40°C ~ 125°C (extended range alternatives)

Substitutes maintain functional equivalence in memory organization, I2C interface, and package footprint. Variations in clock frequency and access time represent trade-offs in performance characteristics while preserving core functionality.

Parameter Comparison

Part Number	Manufacturer	Memory Size	Clock Frequency	Access Time	Supply Voltage	Operating Temperature	Package	RoHS Status	MSL
24LC024HT-I/MNY	Microchip	2Kbit	1 MHz	400 ns	2.5V ~ 5.5V	-40°C ~ 85°C	8-TDFN (2x3)	ROHS3	1
24AA024HT-I/MNY	Microchip	2Kbit	400 kHz	900 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-TDFN (2x3)	ROHS3	1
24AA024T-I/MNY	Microchip	2Kbit	400 kHz	900 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-TDFN (2x3)	ROHS3	1
24AA02T-I/MNY	Microchip	2Kbit	400 kHz	900 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-TDFN (2x3)	ROHS3	1
24LC024HT-E/MNY	Microchip	2Kbit	1 MHz	400 ns	2.5V ~ 5.5V	-40°C ~ 125°C	8-TDFN (2x3)	ROHS3	1
24LC024T-I/MNY	Microchip	2Kbit	400 kHz	900 ns	2.5V ~ 5.5V	-40°C ~ 85°C	8-TDFN (2x3)	ROHS3	1
24LC02BHT-I/MNY	Microchip	2Kbit	400 kHz	900 ns	2.5V ~ 5.5V	-40°C ~ 85°C	8-TDFN (2x3)	ROHS3	1
34AA02T-I/MNY	Microchip	2Kbit	400 kHz	900 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-TDFN (2x3)	ROHS3	1
AT24C02C-MAHM-T	Microchip	2Kbit	1 MHz	550 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-UDFN (2x3)	ROHS3	3
AT24CS02-MAHM-T	Microchip	2Kbit	1 MHz	550 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-UDFN (2x3)	ROHS3	3
AT24MAC602-MAHM-T	Microchip	2Kbit	1 MHz	550 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-UDFN (2x3)	ROHS3	3

Engineering Selection Recommendations

Direct Substitutes (Same Package, Same Performance): 24LC024HT-E/MNY is the closest functional equivalent, offering identical clock frequency (1 MHz) and access time (400 ns) in the same 8-TDFN (2x3) package. This part extends the operating temperature range to -40°C ~ 125°C, making it suitable for high-temperature applications while maintaining all other electrical specifications.

Performance Trade-off Substitutes (Same Package, Lower Speed): 24LC024T-I/MNY, 24LC02BHT-I/MNY, 24AA024HT-I/MNY, 24AA024T-I/MNY, 24AA02T-I/MNY, and 34AA02T-I/MNY operate at 400 kHz clock frequency with 900 ns access time. These parts maintain the 8-TDFN (2x3) package footprint and are suitable for applications where lower clock speeds are acceptable. The 24AA-series parts support wider supply voltage ranges (1.7V ~ 5.5V) compared to the primary part (2.5V ~ 5.5V).

Package Variant Substitutes (Different Package, Similar Performance): AT24C02C-MAHM-T, AT24CS02-MAHM-T, and AT24MAC602-MAHM-T operate at 1 MHz clock frequency in 8-UDFN (2x3) surface mount packages. These parts feature 550 ns access time and support wider supply voltage ranges (1.7V ~ 5.5V). The MSL rating is 3 (168 Hours) rather than MSL 1. These substitutes are suitable when package footprint flexibility is available.

All substitute parts maintain ROHS3 compliance and 5 ms write cycle time. Selection should be based on specific application requirements for clock frequency, access time, supply voltage range, operating temperature, and package constraints.

Frequently Asked Questions (FAQ)

Q: Can 24AA024HT-I/MNY replace 24LC024HT-I/MNY directly? A: Functional replacement is possible with performance trade-offs. The 24AA024HT-I/MNY operates at 400 kHz instead of 1 MHz and has 900 ns access time instead of 400 ns. Both parts use identical 8-TDFN (2x3) packaging and maintain I2C interface compatibility. The 24AA024HT-I/MNY supports lower supply voltages (1.7V minimum) compared to the primary part (2.5V minimum).

Q: What is the difference between 24LC024HT-I/MNY and 24LC024HT-E/MNY? A: Both parts are identical in clock frequency (1 MHz), access time (400 ns), package type (8-TDFN 2x3), and supply voltage range (2.5V ~ 5.5V). The primary difference is operating temperature range: 24LC024HT-I/MNY operates from -40°C to 85°C, while 24LC024HT-E/MNY extends to -40°C to 125°C. The extended temperature variant is suitable for industrial and automotive applications.

Q: Are AT24C02C-MAHM-T and AT24CS02-MAHM-T compatible with 24LC024HT-I/MNY? A: These parts are functionally compatible but use different packaging. AT24C02C-MAHM-T and AT24CS02-MAHM-T employ 8-UDFN (2x3) packages instead of 8-TDFN (2x3). Both operate at 1 MHz clock frequency with 550 ns access time. The MSL rating differs (MSL 3 versus MSL 1), which affects moisture handling during storage and assembly. PCB layout modifications are required due to package differences.

Q: Which substitute part has the widest supply voltage range? A: The 24AA024HT-I/MNY, 24AA024T-I/MNY, 24AA02T-I/MNY, 34AA02T-I/MNY, AT24C02C-MAHM-T, AT24CS02-MAHM-T, and AT24MAC602-MAHM-T all support 1.7V ~ 5.5V supply voltage range, compared to the primary part's 2.5V ~ 5.5V range. These parts are suitable for low-voltage applications.

Q: What is the impact of MSL rating differences? A: The primary part and most substitutes have MSL 1 (unlimited moisture sensitivity), meaning they can be stored indefinitely without moisture control. AT24C02C-MAHM-T, AT24CS02-MAHM-T, and AT24MAC602-MAHM-T have MSL 3 (168 Hours), requiring moisture control during storage and limiting shelf life to 168 hours after bag opening under specified humidity conditions.

Q: Can I use a 400 kHz part in a circuit designed for 1 MHz operation? A: Yes, lower-speed parts operate at reduced clock frequencies and are backward compatible in I2C systems. However, the application must tolerate increased access times (900 ns versus 400 ns) and reduced throughput. The I2C protocol remains unchanged, ensuring communication compatibility.

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