24LC044-I/P EEPROM Memory IC Equivalent & Substitute Parts

Part Overview

The 24LC044-I/P is a 4Kbit I2C EEPROM memory integrated circuit manufactured by Microchip Technology. This non-volatile memory device operates at 1 MHz clock frequency with a supply voltage range of 2.5V to 5.5V and is housed in an 8-DIP through-hole package. The device is actively produced and ROHS3 compliant, making it suitable for embedded systems requiring persistent data storage with I2C serial interface communication.

Equivalent and substitute parts are identified based on matching core electrical and mechanical parameters: memory capacity (4Kbit), memory organization (256 x 8 x 2), I2C interface protocol, package type (8-DIP), and operating temperature range (-40°C to 85°C).

Substiute Parts

24LC044-I/P

Microchip TechnologyIn Stock: 95524LC044-I/P Datasheet

Current PartRFQ

24AA04-I/P

Microchip TechnologyIn Stock: 121324AA04-I/P Datasheet

MFR RecommendedRFQ

24LC04B-I/P

Microchip TechnologyIn Stock: 241624LC04B-I/P Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 24LC044-I/P are qualified based on the following criteria:

Mandatory Matching Parameters:

• Memory capacity: 4Kbit
• Memory organization: 256 x 8 x 2
• Interface protocol: I2C
• Package type: 8-DIP through-hole
• Operating temperature range: -40°C to 85°C
• Mounting type: Through hole

Allowable Variations:

• Clock frequency: The 24LC044-I/P operates at 1 MHz. Substitute parts operating at lower clock frequencies (400 kHz) are functionally compatible in applications where the main part's higher speed is not required.
• Supply voltage range: Substitute parts with wider or overlapping voltage ranges are acceptable provided the minimum voltage requirement does not exceed the main part's specification.

The identified substitutes (24AA04-I/P and 24LC04B-I/P) meet all mandatory matching parameters and represent valid alternatives within the 4Kbit I2C EEPROM product family.

Parameter Comparison

Engineering Selection Recommendations

24LC044-I/P (Primary Part): Active product status with ROHS3 compliance and REACH unaffected designation. Operates at 1 MHz clock frequency with supply voltage range 2.5V to 5.5V.

24AA04-I/P (Substitute): Active product status with ROHS3 compliance and REACH unaffected designation. Operates at 400 kHz clock frequency with extended supply voltage range (1.7V to 5.5V). Suitable for applications where lower clock frequency is acceptable and lower minimum supply voltage is beneficial.

24LC04B-I/P (Substitute): Active product status with ROHS3 compliance, REACH unaffected designation, and verified programmability status. Operates at 400 kHz clock frequency with supply voltage range 2.5V to 5.5V. Matches the primary part's voltage specification while offering verified programmability certification.

All three parts share identical memory capacity, organization, I2C interface, package configuration, and operating temperature range. Selection between parts depends on clock frequency requirements and supply voltage constraints specific to the application.

Frequently Asked Questions (FAQ)

Q: Can 24AA04-I/P replace 24LC044-I/P in all applications?

A: The 24AA04-I/P is functionally compatible where the application does not require 1 MHz clock frequency operation. Both devices share identical memory capacity, organization, I2C protocol, and package type. The 24AA04-I/P operates at 400 kHz and features a lower minimum supply voltage (1.7V versus 2.5V).

Q: What is the primary difference between 24LC04B-I/P and 24AA04-I/P?

A: Both operate at 400 kHz with identical memory specifications and package type. The 24LC04B-I/P has verified programmability certification and maintains the 2.5V minimum supply voltage specification. The 24AA04-I/P supports lower minimum supply voltage (1.7V).

Q: Are all three parts pin-compatible?

A: Yes. All three parts use the 8-DIP (0.300", 7.62mm) through-hole package with identical pin configuration, enabling direct board-level substitution without layout modification.

Q: What compliance certifications apply to all substitute parts?

A: All three parts are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99 with HTSUS code 8542.32.0051.

Q: Does clock frequency affect I2C protocol compatibility?

A: No. All three parts implement the I2C serial interface protocol. Clock frequency differences (1 MHz versus 400 kHz) affect data transfer speed but do not impact protocol compatibility or pin-level interface requirements.