Equivalent & Substitute Parts for 24AA01HT-I/MS

Part Overview

The 24AA01HT-I/MS is a 1Kbit EEPROM memory IC manufactured by Microchip Technology, featuring I2C interface operation at 400 kHz with 900 ns access time. This component is classified as Active product status and is ROHS3 compliant. Substitute parts are necessary when the primary part experiences supply constraints, inventory limitations, or when design requirements permit operation within the electrical and mechanical parameter ranges of alternative manufacturers' offerings.

Substiute Parts

24AA01HT-I/MS

Microchip TechnologyIn Stock: 93524AA01HT-I/MS Datasheet

Current PartRFQ

BR24G01FVJ-3GTE2

Rohm SemiconductorIn Stock: 5015BR24G01FVJ-3GTE2 Datasheet

MFR RecommendedRFQ

BR24G01FVM-3AGTTR

Rohm SemiconductorIn Stock: 3898BR24G01FVM-3AGTTR Datasheet

MFR RecommendedRFQ

BR24L01AFVM-WTR

Rohm SemiconductorIn Stock: 15717BR24L01AFVM-WTR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 24AA01HT-I/MS is determined by the following critical parameters:

Core Electrical Parameters: Memory size (1Kbit), memory organization (128 x 8), I2C interface protocol, and write cycle time (5ms) must remain constant across all substitutes. Clock frequency tolerance permits operation at 400 kHz or higher. Voltage supply range must encompass the minimum 1.7V requirement of the primary part.

Mechanical Parameters: Surface mount mounting type and 8-pin package configuration (8-TSSOP or 8-MSOP) are required for physical compatibility.

Compliance Parameters: ROHS3 compliance and EAR99 ECCN classification are maintained across all listed substitutes.

The three qualified substitute parts are grouped as follows:

Group 1 - BR24G01FVJ-3GTE2 (Rohm Semiconductor): Matches all core electrical parameters with 400 kHz operation. Voltage supply range 1.6V ~ 5.5V meets requirements. Package configuration is 8-TSSOP-BJ. Product status is Not For New Designs.

Group 2 - BR24G01FVM-3AGTTR (Rohm Semiconductor): Matches core electrical parameters with enhanced 1 MHz clock frequency capability. Voltage supply range 1.6V ~ 5.5V meets requirements. Package configuration is 8-MSOP. Product status is Active.

Group 3 - BR24L01AFVM-WTR (Rohm Semiconductor): Matches all core electrical parameters with 400 kHz operation. Voltage supply range 1.8V ~ 5.5V meets requirements. Package configuration is 8-MSOP. Product status is Active with verified programmability.

Parameter Comparison

Engineering Selection Recommendations

For Active Product Designs: BR24G01FVM-3AGTTR and BR24L01AFVM-WTR are both classified as Active product status and are suitable for new design implementations. BR24L01AFVM-WTR carries verified programmability certification, providing additional assurance for production environments.

For Legacy or Maintenance Applications: BR24G01FVJ-3GTE2 is classified as Not For New Designs but remains available with 4913 units in stock. This part is appropriate only for sustaining engineering or replacement scenarios where design changes are not feasible.

Package Compatibility Consideration: BR24G01FVJ-3GTE2 uses 8-TSSOP-BJ package configuration, while BR24G01FVM-3AGTTR and BR24L01AFVM-WTR use 8-MSOP configuration. Physical board layout compatibility must be verified before selection.

Voltage Supply Range: BR24L01AFVM-WTR specifies a minimum supply voltage of 1.8V, which is higher than the primary part's 1.7V minimum. Applications requiring operation below 1.8V must use BR24G01FVJ-3GTE2 or BR24G01FVM-3AGTTR.

Clock Frequency Capability: BR24G01FVM-3AGTTR operates at 1 MHz, providing enhanced performance over the 400 kHz baseline. This part is backward compatible with 400 kHz I2C bus implementations.

Frequently Asked Questions (FAQ)

Q: Can BR24G01FVM-3AGTTR be used as a direct replacement for 24AA01HT-I/MS?

A: Yes, BR24G01FVM-3AGTTR is electrically compatible. The 1 MHz clock frequency is a superset capability of the 400 kHz requirement. Physical package compatibility (8-MSOP) must be confirmed for your PCB layout.

Q: What is the difference between the three substitute parts?

A: BR24G01FVJ-3GTE2 operates at 400 kHz in 8-TSSOP-BJ package with Not For New Designs status. BR24G01FVM-3AGTTR operates at 1 MHz in 8-MSOP package with Active status. BR24L01AFVM-WTR operates at 400 kHz in 8-MSOP package with Active status and verified programmability.

Q: Is BR24G01FVJ-3GTE2 suitable for new product designs?

A: No. BR24G01FVJ-3GTE2 is classified as Not For New Designs. Use BR24G01FVM-3AGTTR or BR24L01AFVM-WTR for new design implementations.

Q: What is the minimum supply voltage for each substitute?

A: BR24G01FVJ-3GTE2 and BR24G01FVM-3AGTTR support 1.6V minimum. BR24L01AFVM-WTR supports 1.8V minimum. The primary part 24AA01HT-I/MS supports 1.7V minimum.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All three substitute parts are ROHS3 compliant with MSL rating of 1 (Unlimited), matching the primary part's compliance profile.

Q: Can I use BR24L01AFVM-WTR in applications requiring 1.7V operation?

A: No. BR24L01AFVM-WTR specifies a minimum supply voltage of 1.8V. For applications requiring 1.7V operation, use BR24G01FVJ-3GTE2 or BR24G01FVM-3AGTTR.

Q: What does "verified programmability" mean for BR24L01AFVM-WTR?

A: Verified programmability indicates that DiGi-Electronics has confirmed the part's programming characteristics and functionality through testing, providing additional confidence for production applications.