24LC044-E/SN Equivalent & Substitute Parts

Part Overview

The 24LC044-E/SN is a 4Kbit EEPROM memory IC manufactured by Microchip Technology, featuring I2C interface communication at 1 MHz clock frequency. This non-volatile memory device is housed in an 8-SOIC surface mount package and operates across a supply voltage range of 2.5V to 5.5V with an operating temperature range of -40°C to 125°C. The device maintains Active product status and is ROHS3 compliant. Equivalent and substitute parts are identified when they maintain identical memory capacity, interface protocol, package form factor, and electrical operating parameters while potentially varying in clock frequency or access characteristics.

Substiute Parts

24LC044-E/SN

Microchip TechnologyIn Stock: 102724LC044-E/SN Datasheet

Current PartRFQ

24LC04B-E/SN

Microchip TechnologyIn Stock: 174724LC04B-E/SN Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 24LC044-E/SN are qualified based on the following critical parameters that must remain constant:

• Memory capacity: 4Kbit
• Memory format: EEPROM technology
• Memory organization: 256 x 8 x 2
• Interface protocol: I2C
• Package form factor: 8-SOIC
• Supply voltage range: 2.5V ~ 5.5V
• Operating temperature range: -40°C ~ 125°C
• Mounting type: Surface Mount

The 24LC04B-E/SN qualifies as a direct substitute because it maintains all critical parameters. The clock frequency differs (400 kHz versus 1 MHz), which represents a reduction in maximum I2C bus speed capability. This variation does not prevent substitution in applications where the lower clock frequency remains compatible with system requirements.

Parameter Comparison

Engineering Selection Recommendations

Both the 24LC044-E/SN and 24LC04B-E/SN maintain Active product status from Microchip Technology, ensuring continued availability and support. Both devices are ROHS3 compliant and carry MSL rating 1, indicating no moisture sensitivity limitations. The 24LC04B-E/SN is verified as DiGi-Electronics Programmable, while the main part status is not verified. Selection between these parts depends on I2C bus speed requirements: the 24LC044-E/SN supports 1 MHz operation, while the 24LC04B-E/SN operates at 400 kHz maximum. In applications where I2C bus speed is limited to 400 kHz or lower, the 24LC04B-E/SN provides equivalent functionality. In systems requiring 1 MHz I2C operation, the 24LC044-E/SN is the appropriate choice.

Frequently Asked Questions (FAQ)

Q: Can the 24LC04B-E/SN replace the 24LC044-E/SN in all applications?

A: The 24LC04B-E/SN is a functional substitute when the I2C bus operates at 400 kHz or lower. If your application requires 1 MHz I2C bus speed, the 24LC044-E/SN must be used. Both devices share identical memory capacity, organization, supply voltage range, and operating temperature specifications.

Q: What is the primary difference between these two parts?

A: The clock frequency differs: 24LC044-E/SN operates at 1 MHz, while 24LC04B-E/SN operates at 400 kHz. All other electrical and mechanical parameters remain identical.

Q: Are the packages physically identical?

A: Yes. Both parts use the 8-SOIC package with 0.154" width (3.90mm). They are pin-compatible and have identical footprints for PCB assembly.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the 24LC044-E/SN and 24LC04B-E/SN are ROHS3 compliant, REACH unaffected, and carry MSL rating 1 with unlimited moisture sensitivity protection.

Q: What is the memory capacity of these devices?

A: Both devices provide 4Kbit of EEPROM memory organized as 256 x 8 x 2, accessible through the I2C interface.