24LC044T-E/SN EEPROM Memory IC Equivalent & Substitute Parts

Part Overview

The 24LC044T-E/SN is a 4Kbit EEPROM memory integrated circuit manufactured by Microchip Technology, designed for non-volatile data storage applications requiring I2C serial communication. This device operates at 1 MHz clock frequency with a supply voltage range of 2.5V to 5.5V and is housed in an 8-SOIC surface mount package. The part is currently in active production status with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

Equivalent and substitute parts are identified when they maintain identical memory capacity, organization, interface protocol, package form factor, and electrical operating parameters. Finding suitable alternatives ensures design flexibility, supply chain continuity, and component availability across manufacturing cycles.

Substiute Parts

24LC044T-E/SN

Microchip TechnologyIn Stock: 98524LC044T-E/SN Datasheet

Current PartRFQ

24LC04BT-E/SN

Microchip TechnologyIn Stock: 500047324LC04BT-E/SN Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 24LC044T-E/SN is determined by strict equivalence across the following critical parameters:

• Memory capacity and organization (4Kbit, 256 x 8 x 2 configuration)
• Serial communication protocol (I2C interface)
• Physical package form factor (8-SOIC with 0.154" width, 3.90mm)
• Electrical operating range (2.5V to 5.5V supply, -40°C to 125°C temperature)
• Surface mount mounting technology
• Regulatory compliance (ROHS3, REACH Unaffected, EAR99 classification)

The 24LC04BT-E/SN qualifies as a direct substitute based on identical memory organization, I2C interface, package specification, voltage range, and temperature rating. Clock frequency variation (400 kHz versus 1 MHz) does not preclude substitution, as the lower frequency specification remains compatible with I2C protocol requirements and system-level timing constraints.

Parameter Comparison

Engineering Selection Recommendations

Both the 24LC044T-E/SN and 24LC04BT-E/SN are active production components from Microchip Technology with full ROHS3 compliance and REACH unaffected status. Selection between these parts should be based on system-level I2C bus timing requirements. The 24LC044T-E/SN operates at 1 MHz clock frequency, while the 24LC04BT-E/SN operates at 400 kHz. In applications where I2C bus speed is not a limiting factor, either part provides equivalent functionality. The 24LC04BT-E/SN offers significantly higher inventory availability (5,000,400 pieces) compared to the 24LC044T-E/SN (964 pieces), making it the preferred choice for high-volume production or extended supply chain requirements.

Frequently Asked Questions (FAQ)

Q: Can the 24LC04BT-E/SN replace the 24LC044T-E/SN in existing designs?

A: Yes. Both devices share identical memory capacity, organization, I2C interface, package form factor, and electrical operating parameters. The lower clock frequency of the 24LC04BT-E/SN (400 kHz) is compatible with standard I2C protocol specifications and does not create functional incompatibility.

Q: What is the significance of the clock frequency difference?

A: The 24LC044T-E/SN supports I2C communication at 1 MHz, while the 24LC04BT-E/SN operates at 400 kHz. This difference affects data transfer rate but does not impact memory capacity, organization, or electrical compatibility. System designs must accommodate the lower maximum bus speed of the substitute part.

Q: Are both parts suitable for the same PCB assembly process?

A: Yes. Both devices use identical 8-SOIC surface mount packaging with 0.154" width and 3.90mm dimensions. No PCB layout modifications or assembly process changes are required when substituting between these parts.

Q: What compliance certifications apply to both parts?

A: Both the 24LC044T-E/SN and 24LC04BT-E/SN are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99 with HTSUS code 8542.32.0051.

Q: Is there a difference in write cycle time between these parts?

A: The 24LC04BT-E/SN specifies a 5ms write cycle time and 900ns access time. The 24LC044T-E/SN does not provide these specifications in the available data. System designs should account for the 5ms write cycle time when using the 24LC04BT-E/SN.