Equivalent & Substitute Parts for 24AA04H-I/P

Part Overview

The 24AA04H-I/P is a 4Kbit EEPROM memory IC manufactured by Microchip Technology, featuring I2C interface operation at 400 kHz with 900 ns access time. This device is designed for non-volatile data storage applications requiring low-power, serial communication protocols. The part maintains Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to inventory constraints, design optimization, or application-specific performance requirements.

Substiute Parts

24AA04H-I/P

Microchip TechnologyIn Stock: 84624AA04H-I/P Datasheet

Current PartRFQ

AT24HC04B-PU

Microchip TechnologyIn Stock: 3693AT24HC04B-PU Datasheet

MFR RecommendedRFQ

24AA04-I/P

Microchip TechnologyIn Stock: 121324AA04-I/P Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 24AA04H-I/P are classified based on strict electrical and mechanical parameter alignment:

Parametric Equivalent (24AA04-I/P): Identical electrical specifications including 4Kbit capacity, 400 kHz I2C operation, 900 ns access time, and matching voltage supply range (1.7V ~ 5.5V). Package configuration, write cycle time, and operating temperature range are identical. This part represents a direct functional equivalent with the same performance envelope.

Manufacturer Recommended Substitute (AT24HC04B-PU): Shares core memory capacity (4Kbit), I2C interface protocol, and identical package footprint (8-DIP). Operates at elevated clock frequency (1 MHz) with improved access time (550 ns). Voltage supply range is slightly narrower (1.8V ~ 5.5V). Write cycle time remains 5ms. This substitute provides enhanced performance characteristics while maintaining mechanical and protocol compatibility.

Parameter Comparison

Engineering Selection Recommendations

24AA04-I/P is selected when parametric equivalence to the 24AA04H-I/P is required. Both parts maintain identical electrical specifications, voltage supply compatibility, and thermal operating range. Selection is based on inventory availability and Active product status with full regulatory compliance (RoHS3, REACH Unaffected).

AT24HC04B-PU is selected when enhanced I2C clock frequency (1 MHz versus 400 kHz) and reduced access time (550 ns versus 900 ns) provide system-level performance benefits. The narrower voltage supply minimum (1.8V versus 1.7V) must be evaluated against application power supply specifications. All three parts maintain identical package footprint, write cycle performance, and regulatory compliance status.

Frequently Asked Questions (FAQ)

Q: Can AT24HC04B-PU replace 24AA04H-I/P in existing designs?

A: Mechanical and protocol compatibility is confirmed through identical I2C interface and 8-DIP package footprint. The AT24HC04B-PU operates at higher clock frequency (1 MHz) with faster access time (550 ns), which is backward compatible with systems designed for 400 kHz operation. The minimum supply voltage specification (1.8V) must be verified against the application power supply to ensure adequate margin.

Q: What is the primary difference between 24AA04-I/P and 24AA04H-I/P?

A: Both parts are parametric equivalents with identical electrical specifications, memory capacity, interface protocol, and package configuration. Selection between them is determined by inventory availability and supplier sourcing requirements.

Q: Are all three parts suitable for low-voltage applications below 1.8V?

A: The 24AA04H-I/P and 24AA04-I/P support operation down to 1.7V supply voltage. The AT24HC04B-PU minimum supply voltage is 1.8V. Applications requiring operation below 1.8V must use either the 24AA04H-I/P or 24AA04-I/P.

Q: Do package dimensions differ among these three parts?

A: All three parts use identical 8-DIP (0.300", 7.62mm) package configuration. PCB layout and socket compatibility are interchangeable.

Q: What compliance certifications apply to all substitute parts?

A: All three parts maintain RoHS3 compliance, REACH Unaffected status, and Moisture Sensitivity Level 1 (Unlimited). ECCN classification is EAR99 for all variants.