AT24C08N-10SC EEPROM Memory IC Equivalent & Substitute Parts

Part Overview

The AT24C08N-10SC is an 8Kbit I2C EEPROM memory IC manufactured by Microchip Technology, packaged in 8-SOIC form factor. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing production and maintenance applications. The AT24C08N-10SC operates at 400 kHz I2C clock frequency with 900 ns access time, designed for non-volatile memory storage in embedded systems and industrial applications.

Key Parameters

Parameter	Value
Memory Size	8Kbit
Memory Format	EEPROM
Memory Organization	1K x 8
Memory Interface	I2C
Clock Frequency	400 kHz
Write Cycle Time	5ms
Access Time	900 ns
Voltage Supply Range	4.5V ~ 5.5V
Operating Temperature	0°C ~ 70°C
Package / Case	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitution for the AT24C08N-10SC is determined by the following critical parameters:

Memory Capacity & Organization: All substitutes must provide 8Kbit capacity with I2C interface compatibility
I2C Clock Frequency: Minimum 400 kHz operation required
Package Compatibility: 8-SOIC form factor with 0.154" (3.90mm) width for PCB layout compatibility
Write Cycle Time: 5ms specification must be maintained
Access Time: 900 ns performance characteristic
Voltage Supply Range: Substitutes must operate within or exceed the original 4.5V ~ 5.5V range
Operating Temperature Range: Extended temperature operation (-40°C ~ 85°C) available in active substitutes
RoHS Compliance: Modern substitutes provide ROHS3 compliance, addressing environmental regulations

Substitute parts are grouped by manufacturer and product status. Active parts with extended temperature ranges and improved voltage specifications provide enhanced reliability for new designs, while parts marked "Not For New Designs" remain functionally compatible for legacy system maintenance.

Parameter Comparison

Parameter	AT24C08N-10SC	24AA08-I/SN	CAT24C08WI-G	BR24L08FJ-WE2	BR24T08FJ-WE2	M24C08-RMN6TP	M24C08-WMN6P	M24C08-WMN6TP
Manufacturer	Microchip Technology	Microchip Technology	Catalyst Semiconductor Inc.	Rohm Semiconductor	Rohm Semiconductor	STMicroelectronics	STMicroelectronics	STMicroelectronics
Memory Size	8Kbit	8Kbit	8Kbit	8Kbit	8Kbit	8Kbit	8Kbit	8Kbit
Memory Organization	1K x 8	256 x 8 x 4	1K x 8	1K x 8	1K x 8	1K x 8	1K x 8	1K x 8
Memory Interface	I2C	I2C	I2C	I2C	I2C	I2C	I2C	I2C
Clock Frequency	400 kHz	400 kHz	400 kHz	400 kHz	400 kHz	400 kHz	400 kHz	400 kHz
Write Cycle Time	5ms	5ms	5ms	5ms	5ms	5ms	5ms	5ms
Access Time	900 ns	900 ns	900 ns	Not specified	Not specified	900 ns	900 ns	900 ns
Voltage Supply Range	4.5V ~ 5.5V	1.7V ~ 5.5V	1.7V ~ 5.5V	1.8V ~ 5.5V	1.6V ~ 5.5V	1.8V ~ 5.5V	2.5V ~ 5.5V	2.5V ~ 5.5V
Operating Temperature	0°C ~ 70°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Package / Case	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC
Product Status	Obsolete	Active	Active	Active	Active	Active	Not For New Designs	Not For New Designs
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

For New Designs: Select M24C08-RMN6TP (STMicroelectronics) or BR24L08FJ-WE2 (Rohm Semiconductor). Both parts are active products with ROHS3 compliance, extended operating temperature range (-40°C ~ 85°C), and verified DiGi-Electronics programmability. M24C08-RMN6TP offers the highest inventory availability (105,200 pcs) and is supplied in Cut Tape & Digi-Reel packaging for production efficiency.

For Extended Voltage Range Applications: 24AA08-I/SN (Microchip Technology) provides the widest voltage supply range (1.7V ~ 5.5V) with active product status and ROHS3 compliance, suitable for battery-powered or multi-voltage systems.

For Legacy System Maintenance: M24C08-WMN6TP or M24C08-WMN6P (STMicroelectronics) maintain functional compatibility with the AT24C08N-10SC while offering improved specifications. These parts are marked "Not For New Designs" but remain in active inventory (60,184 and 1,405 pcs respectively) for replacement applications.

For Catalyst Semiconductor Preference: CAT24C08WI-G provides direct substitution with 4,415 pcs inventory availability and ROHS3 compliance, though MSL rating of 3 (168 Hours) requires controlled storage conditions compared to MSL 1 (Unlimited) alternatives.

Frequently Asked Questions (FAQ)

Q: Can I directly replace AT24C08N-10SC with any of these substitute parts?

A: Direct replacement requires matching the 8-SOIC package form factor and I2C interface. All listed substitutes meet these requirements. However, verify your system's voltage supply range. The original part operates at 4.5V ~ 5.5V; substitutes offer wider ranges (1.6V ~ 5.5V), which is compatible but not required for existing designs.

Q: What is the difference between 1K x 8 and 256 x 8 x 4 memory organization?

A: Both configurations provide 8Kbit total capacity and are functionally equivalent for I2C EEPROM applications. The 256 x 8 x 4 organization (24AA08-I/SN) uses internal page organization but presents the same 8Kbit addressable space to the I2C interface.

Q: Why do some substitutes have extended temperature ranges (-40°C ~ 85°C) versus the original (0°C ~ 70°C)?

A: Modern EEPROM designs incorporate improved process technology and thermal management. Extended temperature operation is a specification enhancement; parts rated for -40°C ~ 85°C are fully compatible with systems operating within the original 0°C ~ 70°C range.

Q: What does "Not For New Designs" mean for M24C08-WMN6P and M24C08-WMN6TP?

A: This designation indicates the manufacturer recommends active alternatives for new product development. However, these parts remain functionally qualified and are suitable for legacy system repairs, field replacements, and maintenance applications where design changes are not feasible.

Q: Does RoHS3 compliance affect electrical performance?

A: No. ROHS3 compliance addresses material composition (lead-free, halogen-free) and environmental regulations. Electrical performance, timing specifications, and I2C protocol operation remain unchanged. All ROHS3-compliant substitutes are electrically equivalent to the original RoHS non-compliant AT24C08N-10SC.

Q: What is MSL (Moisture Sensitivity Level) and why does CAT24C08WI-G differ?

A: MSL indicates moisture absorption sensitivity during storage and handling. MSL 1 (Unlimited) allows indefinite shelf storage; MSL 3 (168 Hours) requires baking before reflow soldering if storage exceeds 168 hours in standard humidity. For high-volume production, MSL 1 parts (M24C08-RMN6TP, BR24L08FJ-WE2, BR24T08FJ-WE2) are preferred.

Q: Which substitute offers the best inventory availability?

A: M24C08-RMN6TP (STMicroelectronics) provides the highest stock level at 105,200 pcs, followed by M24C08-WMN6TP at 60,184 pcs. Both are STMicroelectronics products with active or legacy status and ROHS3 compliance.

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