Equivalent & Substitute Parts for 24LC024HT-E/MS

Part Overview

The 24LC024HT-E/MS is a 2Kbit EEPROM memory IC manufactured by Microchip Technology, featuring I2C interface with 1 MHz clock frequency and 400 ns access time. This part is actively produced and widely used in embedded systems requiring non-volatile memory storage. The device operates across a broad temperature range of -40°C to 125°C and supports supply voltages from 2.5V to 5.5V. Substitute parts become necessary when the original part experiences supply constraints, when alternative manufacturers offer improved availability, or when design requirements allow for compatible alternatives with different performance characteristics or package options.

Key Parameters

Parameter	Value
Memory Size	2Kbit
Memory Organization	256 x 8
Memory Interface	I2C
Clock Frequency	1 MHz
Access Time	400 ns
Write Cycle Time	5ms
Voltage Supply Range	2.5V ~ 5.5V
Operating Temperature	-40°C ~ 125°C
Package Type	8-MSOP
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the 24LC024HT-E/MS is determined by the following mandatory parameters: 2Kbit memory capacity, 256 x 8 organization, I2C interface protocol, and 8-pin surface mount package (MSOP or TSSOP variants). All substitute parts must maintain these core specifications. Secondary parameters including clock frequency, access time, voltage supply range, and operating temperature define performance compatibility tiers. Parts with identical or superior specifications in these secondary parameters are direct substitutes. Parts with reduced clock frequency (400 kHz instead of 1 MHz) or narrower temperature ranges remain functionally compatible but represent performance trade-offs. Package variants (8-MSOP versus 8-TSSOP) are mechanically interchangeable within the same footprint class but require PCB layout verification.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Memory Size	Clock Frequency	Access Time	Voltage Supply	Operating Temperature	Package	Write Cycle Time
24LC024HT-E/MS	Microchip Technology	2Kbit	1 MHz	400 ns	2.5V ~ 5.5V	-40°C ~ 125°C	8-MSOP	5ms
BR24A02FVM-WMTR	Rohm Semiconductor	2Kbit	400 kHz	—	2.5V ~ 5.5V	-40°C ~ 105°C	8-MSOP	5ms
BR24G02FVM-3GTTR	Rohm Semiconductor	2Kbit	400 kHz	—	1.6V ~ 5.5V	-40°C ~ 85°C	8-MSOP	5ms
BR34E02FVT-3E2	Rohm Semiconductor	2Kbit	400 kHz	—	1.7V ~ 5.5V	-40°C ~ 85°C	8-TSSOP-B	5ms
M24C02-DRDW3TP/K	STMicroelectronics	2Kbit	1 MHz	450 ns	1.8V ~ 5.5V	-40°C ~ 125°C	8-TSSOP	4ms
M24C02-DRDW8TP/K	STMicroelectronics	2Kbit	1 MHz	450 ns	1.8V ~ 5.5V	-40°C ~ 105°C	8-TSSOP	4ms
M34E02-FDW6TP	STMicroelectronics	2Kbit	400 kHz	900 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	5ms

Engineering Selection Recommendations

The 24LC024HT-E/MS operates at 1 MHz with 400 ns access time and maintains the full -40°C to 125°C temperature range. Direct performance equivalents are M24C02-DRDW3TP/K and M24C02-DRDW8TP/K from STMicroelectronics, both offering 1 MHz operation and matching temperature specifications. M24C02-DRDW3TP/K carries AEC-Q100 automotive qualification, while M24C02-DRDW8TP/K is available in higher quantity with the same qualification. Both use 8-TSSOP packaging and require PCB layout adjustment from the original 8-MSOP footprint.

For applications where 400 kHz clock frequency is acceptable, BR24A02FVM-WMTR from Rohm Semiconductor provides equivalent voltage range (2.5V ~ 5.5V) and maintains the 8-MSOP package, minimizing layout changes. This part carries AEC-Q100 automotive qualification and operates to 105°C.

BR24G02FVM-3GTTR extends the lower voltage limit to 1.6V but reduces the upper temperature limit to 85°C. This part is suitable for low-power applications but incompatible with designs requiring 125°C operation.

BR34E02FVT-3E2 uses 8-TSSOP-B packaging and operates to 85°C maximum, requiring both package footprint and thermal specification verification before selection.

M34E02-FDW6TP operates at 400 kHz with 900 ns access time and is verified programmable, offering the highest inventory availability (41,228 units) among all substitutes.

Frequently Asked Questions (FAQ)

Q: Can I substitute a 400 kHz part for the 1 MHz 24LC024HT-E/MS?

A: Yes, if your application does not require the higher clock frequency. The 400 kHz parts (BR24A02FVM-WMTR, BR24G02FVM-3GTTR, BR34E02FVT-3E2, M34E02-FDW6TP) maintain full I2C protocol compatibility and identical memory capacity. Verify that your system timing does not depend on the 1 MHz clock speed.

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" width (3.00mm), while 8-TSSOP measures 0.173" width (4.40mm). Substitution between these packages requires PCB layout modification and cannot be performed without redesign.

Q: Are the STMicroelectronics M24C02 parts direct replacements?

A: M24C02-DRDW3TP/K and M24C02-DRDW8TP/K are functionally equivalent with 1 MHz operation and 450 ns access time, matching the original performance tier. Both require 8-TSSOP package accommodation. The primary difference is temperature range: DRDW3TP/K operates to 125°C (matching the original), while DRDW8TP/K operates to 105°C.

Q: Which substitute has the best availability?

A: M34E02-FDW6TP from STMicroelectronics has the highest inventory at 41,228 units. This part operates at 400 kHz with 900 ns access time and is verified programmable.

Q: Can I use a part with a lower voltage supply minimum?

A: Yes, if your design operates above the substitute part's minimum voltage. For example, BR24G02FVM-3GTTR has a 1.6V minimum compared to the original 2.5V minimum. This provides additional design flexibility for low-power applications.

Q: What does AEC-Q100 qualification mean?

A: AEC-Q100 is an automotive qualification standard. Parts carrying this certification (BR24A02FVM-WMTR, M24C02-DRDW3TP/K, M24C02-DRDW8TP/K) meet automotive reliability and quality requirements and are suitable for automotive applications.

Q: Is the 24LC024HT-E/MS still in active production?

A: Yes, the part is listed as Active product status with 1,079 units in stock. All listed substitute parts are also in active production.

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