AT24C04N-10SC-2.5 Equivalent & Substitute Parts

Part Overview

The AT24C04N-10SC-2.5 is a 4Kbit EEPROM memory IC with I2C interface operating at 400 kHz, manufactured by Microchip Technology. This device features 512 x 8 memory organization, 900 ns access time, and operates across a 2.5V to 5.5V supply voltage range in an 8-SOIC package. The part is classified as obsolete, necessitating identification of active equivalent and substitute components for new designs and production continuity.

Key Parameters

Parameter	Value
Memory Size	4Kbit
Memory Format	EEPROM
Memory Organization	512 x 8
Interface	I2C
Clock Frequency	400 kHz
Access Time	900 ns
Write Cycle Time	5 ms
Supply Voltage	2.5V ~ 5.5V
Operating Temperature	0°C ~ 70°C
Package	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	Non-compliant

Substitute Part Grouping Explanation

Substitution for the AT24C04N-10SC-2.5 is determined by the following critical parameters: 4Kbit memory capacity, EEPROM format, I2C interface, 512 x 8 organization, 400 kHz clock frequency, 900 ns access time, 5 ms write cycle time, and 8-SOIC package compatibility. Substitute parts must maintain these core electrical and mechanical specifications to ensure functional equivalence.

Substitute parts are grouped into three categories:

MFR Recommended (Enhanced Specifications): Parts with improved performance characteristics while maintaining core functionality. AT24HC04BN-SH-B operates at 1 MHz with 550 ns access time and extended temperature range (-40°C to 85°C), offering backward compatibility with superior performance margins.

Parametric Equivalent (Direct Replacement): 24LC04B/SN provides identical electrical performance at 400 kHz with 900 ns access time and matching supply voltage range, with active product status and RoHS3 compliance.

Direct Manufacturer Alternatives: CAT24C04WI-G from Catalyst Semiconductor and BR24 series from Rohm Semiconductor provide equivalent 4Kbit I2C EEPROM functionality with varying package options (8-SOP vs. 8-SOIC) and temperature ratings.

Parameter Comparison

Part Number	Manufacturer	Memory Size	Clock Frequency	Access Time	Supply Voltage	Operating Temperature	Package	Product Status	RoHS Status
AT24C04N-10SC-2.5	Microchip Technology	4Kbit	400 kHz	900 ns	2.5V ~ 5.5V	0°C ~ 70°C	8-SOIC (3.90mm)	Obsolete	Non-compliant
AT24HC04BN-SH-B	Microchip Technology	4Kbit	1 MHz	550 ns	1.8V ~ 5.5V	-40°C ~ 85°C	8-SOIC (3.90mm)	Active	ROHS3 Compliant
24LC04B/SN	Microchip Technology	4Kbit	400 kHz	900 ns	2.5V ~ 5.5V	0°C ~ 70°C	8-SOIC (3.90mm)	Active	ROHS3 Compliant
CAT24C04WI-G	Catalyst Semiconductor Inc.	4Kbit	400 kHz	900 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-SOIC (3.90mm)	Active	ROHS3 Compliant
BR24A04F-WME2	Rohm Semiconductor	4Kbit	400 kHz	Not specified	2.5V ~ 5.5V	-40°C ~ 105°C	8-SOP (4.40mm)	Active	ROHS3 Compliant
BR24G04FJ-3AGTE2	Rohm Semiconductor	4Kbit	1 MHz	Not specified	1.6V ~ 5.5V	-40°C ~ 85°C	8-SOP-J (3.90mm)	Active	ROHS3 Compliant
BR24L04F-WE2	Rohm Semiconductor	4Kbit	400 kHz	Not specified	1.8V ~ 5.5V	-40°C ~ 85°C	8-SOP (4.40mm)	Active	ROHS3 Compliant
BR24L04FJ-WE2	ROHM Semiconductor	4Kbit	400 kHz	Not specified	1.8V ~ 5.5V	-40°C ~ 85°C	8-SOP-J (3.90mm)	Active	ROHS3 Compliant
BR24T04FJ-WE2	Rohm Semiconductor	4Kbit	400 kHz	Not specified	1.6V ~ 5.5V	-40°C ~ 85°C	8-SOP-J (3.90mm)	Active	ROHS3 Compliant
M24C04-FMN6TP	STMicroelectronics	4Kbit	400 kHz	900 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-SOIC (3.90mm)	Active	ROHS3 Compliant
M24C04-RMN6P	STMicroelectronics	4Kbit	400 kHz	900 ns	1.8V ~ 5.5V	-40°C ~ 85°C	8-SOIC (3.90mm)	Active	ROHS3 Compliant

Engineering Selection Recommendations

For applications requiring direct replacement of the AT24C04N-10SC-2.5 with minimal design changes, 24LC04B/SN from Microchip Technology is the primary choice. This part maintains identical electrical specifications (400 kHz, 900 ns access time, 2.5V to 5.5V supply) and package geometry (8-SOIC 3.90mm), while offering active product status and RoHS3 compliance.

M24C04-FMN6TP and M24C04-RMN6P from STMicroelectronics provide equivalent functionality with extended operating temperature range (-40°C to 85°C) and improved supply voltage tolerance (1.7V to 1.8V minimum), both with RoHS3 compliance and active status.

For applications where enhanced performance is acceptable, AT24HC04BN-SH-B offers superior speed (1 MHz, 550 ns access time) with extended temperature range and lower minimum supply voltage (1.8V), maintaining the same 8-SOIC package footprint.

CAT24C04WI-G provides equivalent performance with extended temperature range (-40°C to 85°C) and lower minimum supply voltage (1.7V), with RoHS3 compliance and active product status.

Rohm Semiconductor BR24 series parts (BR24A04F-WME2, BR24L04F-WE2, BR24L04FJ-WE2, BR24T04FJ-WE2) offer 4Kbit I2C EEPROM functionality with active status and RoHS3 compliance. Package variants include 8-SOP (4.40mm width) and 8-SOP-J options. BR24A04F-WME2 includes AEC-Q100 automotive qualification and extended temperature range to 105°C.

All recommended substitutes maintain 4Kbit capacity, EEPROM format, I2C interface, 512 x 8 organization, 5 ms write cycle time, and 8-SOIC or compatible package footprints. Selection should account for specific application requirements regarding operating temperature, supply voltage tolerance, and package compatibility.

Frequently Asked Questions (FAQ)

Q: Can AT24HC04BN-SH-B replace AT24C04N-10SC-2.5 directly?

A: Yes. AT24HC04BN-SH-B is functionally compatible with enhanced specifications. It operates at 1 MHz (vs. 400 kHz) with 550 ns access time (vs. 900 ns), maintains the same 8-SOIC package, and supports the full 2.5V to 5.5V supply range. The extended temperature range (-40°C to 85°C vs. 0°C to 70°C) and lower minimum supply voltage (1.8V vs. 2.5V) provide additional design margin.

Q: What is the difference between 8-SOIC and 8-SOP packages?

A: Both are 8-pin surface mount packages with similar pinouts for I2C EEPROM devices. The primary difference is package width: 8-SOIC measures 3.90mm width, while 8-SOP measures 4.40mm width. PCB layout and footprint compatibility must be verified before substitution. 8-SOP-J variants maintain the 3.90mm width with different lead configuration.

Q: Is 24LC04B/SN a true parametric equivalent?

A: Yes. 24LC04B/SN matches the AT24C04N-10SC-2.5 across all critical parameters: 4Kbit capacity, 400 kHz clock frequency, 900 ns access time, 2.5V to 5.5V supply voltage, and 8-SOIC package. It provides active product status and RoHS3 compliance, making it the most direct replacement.

Q: Why do some substitutes have different temperature ranges?

A: Temperature range differences reflect design improvements and manufacturing process updates. Parts with extended ranges (-40°C to 85°C) offer broader application flexibility. Selection should match application requirements; extended range parts are not required for 0°C to 70°C applications but provide additional margin if needed.

Q: Are all substitute parts RoHS3 compliant?

A: All recommended substitutes are RoHS3 compliant except the original AT24C04N-10SC-2.5, which is RoHS non-compliant. This compliance improvement is a key advantage of migration to active alternatives.

Q: Can I use BR24 series parts as direct replacements?

A: BR24 series parts provide equivalent 4Kbit I2C EEPROM functionality but use 8-SOP or 8-SOP-J packages (4.40mm or 3.90mm width) instead of standard 8-SOIC. PCB footprint compatibility must be verified. Electrical specifications are equivalent, supporting 400 kHz operation and 512 x 8 organization.

Q: What is the significance of "Verified" DiGi-Electronics Programmable status?

A: Verified status indicates the part has been tested and confirmed compatible with standard programming equipment and procedures. Non-verified parts may require additional validation before production use, though they maintain equivalent electrical specifications.

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