Equivalent & Substitute Parts for 24LCS52T/SN

Part Overview

The 24LCS52T/SN 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 designed for applications requiring persistent data storage in a compact 8-SOIC surface mount package. The part is currently in active production status with RoHS3 compliance and REACH unaffected classification. Equivalent and substitute parts are identified to support design flexibility, supply chain continuity, and application-specific performance requirements where operational parameters align with the original specification.

Key Parameters

Parameter	Value
Memory Type	Non-Volatile EEPROM
Memory Size	2Kbit
Memory Organization	256 x 8
Interface	I2C
Clock Frequency	400 kHz
Access Time	900 ns
Write Cycle Time	5 ms
Supply Voltage Range	2.2V ~ 5.5V
Operating Temperature	0°C ~ 70°C
Package	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the 24LCS52T/SN is determined by the following critical parameters:

Core Functional Parameters:

Memory capacity: 2Kbit (256 x 8 organization)
Interface protocol: I2C
Package type: 8-SOIC with 3.90mm width
Non-volatile EEPROM technology

Performance Parameters:

Clock frequency: 400 kHz minimum
Access time: 900 ns maximum
Write cycle time: 5 ms
Supply voltage compatibility: minimum 2.2V support

Environmental & Compliance Parameters:

Operating temperature range: 0°C minimum to 70°C maximum
RoHS3 compliance
MSL rating: 1 (Unlimited) preferred for storage stability

Substitute parts are grouped into two categories:

Category A - Direct Equivalents (Microchip 24AA/24LCS Series): Parts maintaining identical memory specifications, I2C interface, and 8-SOIC packaging with compatible voltage and temperature ranges. These include 24AA02T/SN, 24AA02T-I/SN, 24LCS52-I/SN, and 24LCS52T-I/SN variants differing only in packaging format (Tape & Reel, Cut Tape, or Tube).

Category B - Enhanced Performance Substitutes (Microchip AT Series): Parts with identical memory capacity and I2C interface but offering higher clock frequency (1 MHz) and faster access time (550 ns), including AT24CS02-SSHM-T, AT24HC02C-SSHM-T, and AT34C02D-SSHM-T. These provide backward compatibility with superior performance margins.

Category C - Cross-Manufacturer Alternatives (Rohm Semiconductor): BR24G02F-3GTE2 offering equivalent memory specifications with 8-SOP packaging (4.40mm width) and extended voltage range (1.6V minimum).

Parameter Comparison

Part Number	Manufacturer	Memory Size	Interface	Clock Freq	Access Time	Supply Voltage	Temp Range	Package	MSL	Status
24LCS52T/SN	Microchip	2Kbit	I2C	400 kHz	900 ns	2.2V ~ 5.5V	0°C ~ 70°C	8-SOIC (3.90mm)	1	Active
24AA024T-I/SN	Microchip	2Kbit	I2C	400 kHz	900 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-SOIC (3.90mm)	3	Active
24AA025T-I/SN	Microchip	2Kbit	I2C	400 kHz	900 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-SOIC (3.90mm)	1	Active
24AA02T-I/SN	Microchip	2Kbit	I2C	400 kHz	900 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-SOIC (3.90mm)	1	Active
24AA02T/SN	Microchip	2Kbit	I2C	400 kHz	900 ns	1.7V ~ 5.5V	0°C ~ 70°C	8-SOIC (3.90mm)	1	Active
24LCS52-I/SN	Microchip	2Kbit	I2C	400 kHz	900 ns	2.2V ~ 5.5V	-40°C ~ 85°C	8-SOIC (3.90mm)	1	Active
24LCS52T-I/SN	Microchip	2Kbit	I2C	400 kHz	900 ns	2.2V ~ 5.5V	-40°C ~ 85°C	8-SOIC (3.90mm)	1	Active
AT24CS02-SSHM-T	Microchip	2Kbit	I2C	1 MHz	550 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-SOIC (3.90mm)	1	Active
AT24HC02C-SSHM-T	Microchip	2Kbit	I2C	1 MHz	550 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-SOIC (3.90mm)	3	Active
AT34C02D-SSHM-T	Microchip	2Kbit	I2C	1 MHz	Not Specified	1.7V ~ 5.5V	-40°C ~ 85°C	8-SOIC (3.90mm)	3	Active
BR24G02F-3GTE2	Rohm	2Kbit	I2C	400 kHz	Not Specified	1.6V ~ 5.5V	-40°C ~ 85°C	8-SOP (4.40mm)	1	Active

Engineering Selection Recommendations

For Direct Pin-Compatible Replacement: Select 24LCS52T-I/SN or 24LCS52-I/SN when maintaining identical voltage specifications (2.2V minimum) and temperature range (0°C to 70°C) is required. Both parts are Microchip Technology products with verified DiGi-Electronics programmability status and RoHS3 compliance. The 24LCS52T-I/SN offers Cut Tape packaging while 24LCS52-I/SN is supplied in Tube format.

For Extended Temperature Range Applications: 24AA02T-I/SN, 24AA025T-I/SN, or 24LCS52T-I/SN support operating temperatures from -40°C to 85°C. The 24AA series parts accept lower minimum supply voltage (1.7V) compared to the 24LCS52 series (2.2V minimum). All maintain 400 kHz I2C operation and 900 ns access time.

For Enhanced Performance Requirements: AT24CS02-SSHM-T and AT34C02D-SSHM-T provide 1 MHz I2C clock frequency and 550 ns access time, delivering 2.25x faster data access than the 24LCS52T/SN. Both support -40°C to 85°C temperature range and 1.7V minimum supply voltage. AT34C02D-SSHM-T carries verified DiGi-Electronics programmability status.

For Cross-Manufacturer Sourcing: BR24G02F-3GTE2 (Rohm Semiconductor) maintains 2Kbit capacity and 400 kHz I2C interface with extended voltage range (1.6V minimum). Package width increases to 4.40mm (8-SOP) versus 3.90mm (8-SOIC) for Microchip parts, requiring PCB layout verification.

Compliance Considerations: All substitute parts maintain RoHS3 compliance and REACH unaffected status. MSL ratings vary: MSL 1 (Unlimited) parts include 24LCS52T/SN, 24AA025T-I/SN, 24AA02T-I/SN, 24AA02T/SN, 24LCS52-I/SN, 24LCS52T-I/SN, AT24CS02-SSHM-T, and BR24G02F-3GTE2. MSL 3 (168 Hours) applies to 24AA024T-I/SN, AT24HC02C-SSHM-T, and AT34C02D-SSHM-T.

Frequently Asked Questions (FAQ)

Q: Can 24AA02T/SN replace 24LCS52T/SN in all applications? A: 24AA02T/SN is functionally compatible for I2C EEPROM operations at 400 kHz with identical 2Kbit capacity and 8-SOIC packaging. However, it supports lower minimum supply voltage (1.7V vs. 2.2V) and identical temperature range (0°C to 70°C). Verify your application's voltage requirements before substitution.

Q: What is the difference between 24LCS52T/SN and 24LCS52T-I/SN? A: Both parts are identical in electrical specifications and performance. The primary difference is packaging format: 24LCS52T/SN is supplied in standard Tape & Reel format, while 24LCS52T-I/SN is supplied in Cut Tape format. Select based on your procurement and assembly process requirements.

Q: Are AT24CS02-SSHM-T and AT24HC02C-SSHM-T interchangeable with 24LCS52T/SN? A: Both AT series parts are backward compatible with 24LCS52T/SN, offering superior performance (1 MHz vs. 400 kHz, 550 ns vs. 900 ns access time). They maintain identical 2Kbit capacity and 8-SOIC packaging. However, AT24HC02C-SSHM-T has MSL 3 rating versus MSL 1 for the original part, affecting storage conditions.

Q: Can BR24G02F-3GTE2 be used as a direct replacement? A: BR24G02F-3GTE2 provides equivalent 2Kbit I2C EEPROM functionality at 400 kHz. The critical difference is package width: 4.40mm (8-SOP) versus 3.90mm (8-SOIC) for 24LCS52T/SN. PCB layout and footprint compatibility must be verified before substitution. Pin configuration and electrical operation are compatible.

Q: What supply voltage range should I verify for substitution? A: The 24LCS52T/SN operates from 2.2V to 5.5V. Most Microchip 24AA series substitutes operate from 1.7V to 5.5V, providing wider voltage compatibility. If your application uses supply voltages below 2.2V, select 24AA series parts. If your application requires 2.2V minimum operation, 24LCS52 series parts are preferred.

Q: Which substitute parts have verified DiGi-Electronics programmability? A: Verified programmability status applies to 24LCS52T/SN, 24AA024T-I/SN, 24AA02T-I/SN, 24AA02T/SN, 24LCS52-I/SN, 24LCS52T-I/SN, and AT34C02D-SSHM-T. Parts marked "Not Verified" include 24AA025T-I/SN, AT24CS02-SSHM-T, AT24HC02C-SSHM-T, and BR24G02F-3GTE2.

Q: How does MSL rating affect part selection? A: MSL 1 (Unlimited) parts have no moisture sensitivity restrictions and can be stored indefinitely. MSL 3 (168 Hours) parts must be used within 168 hours of package opening or require baking per IPC standards. For applications with extended storage or delayed assembly, MSL 1 parts are recommended.

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