Equivalent & Substitute Parts for 24AA014HT-I/ST

Part Overview

The 24AA014HT-I/ST is a 1Kbit EEPROM memory IC manufactured by Microchip Technology, featuring I2C interface with 400 kHz clock frequency and 900 ns access time. This non-volatile memory device operates across a wide voltage range of 1.7V to 5.5V and is housed in an 8-TSSOP package. The part is currently in active product status with ROHS3 compliance and unlimited moisture sensitivity rating.

Substitute parts are necessary when the original part becomes unavailable, when alternative packaging formats are required for manufacturing optimization, or when enhanced performance specifications (such as higher clock frequency or faster access time) are needed for system upgrades.

Substiute Parts

24AA014HT-I/ST

Microchip TechnologyIn Stock: 322224AA014HT-I/ST Datasheet

Current PartRFQ

AT24CS01-XHM-T

Microchip TechnologyIn Stock: 25488AT24CS01-XHM-T Datasheet

MFR RecommendedRFQ

BR24G01FVT-3GE2

Rohm SemiconductorIn Stock: 1212BR24G01FVT-3GE2 Datasheet

MFR RecommendedRFQ

BR24L01AFV-WE2

Rohm SemiconductorIn Stock: 3507BR24L01AFV-WE2 Datasheet

MFR RecommendedRFQ

BR24L01AFVM-WTR

Rohm SemiconductorIn Stock: 15717BR24L01AFVM-WTR Datasheet

MFR RecommendedRFQ

BR24L01AFVT-WE2

ROHM SemiconductorIn Stock: 5932BR24L01AFVT-WE2 Datasheet

MFR RecommendedRFQ

BR24T01FVM-WTR

Rohm SemiconductorIn Stock: 15362BR24T01FVM-WTR Datasheet

MFR RecommendedRFQ

BR24T01FVT-WE2

Rohm SemiconductorIn Stock: 1349BR24T01FVT-WE2 Datasheet

MFR RecommendedRFQ

M24C01-RDW6TP

STMicroelectronicsIn Stock: 53202M24C01-RDW6TP Datasheet

MFR RecommendedRFQ

M24C01-WDW6TP

STMicroelectronicsIn Stock: 111137M24C01-WDW6TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 24AA014HT-I/ST is determined by the following core parameters:

Critical Parameters (Must Match):

• Memory Size: 1Kbit
• Memory Organization: 128 x 8
• Memory Interface: I2C
• Write Cycle Time: 5ms
• Operating Temperature Range: -40°C ~ 85°C
• RoHS Status: ROHS3 Compliant

Compatible Variation Parameters:

• Clock Frequency: 400 kHz or higher (higher frequency is backward compatible)
• Access Time: 900 ns or faster (faster access time is backward compatible)
• Voltage Supply Range: Must encompass or match the original 1.7V ~ 5.5V range
• Package Type: 8-TSSOP, 8-TSSOP-B, 8-MSOP, or 8-LSSOP (all equivalent 8-pin surface mount packages)
• Manufacturer: Microchip Technology, STMicroelectronics, or Rohm Semiconductor

Substitute parts are grouped into two categories: direct pin-compatible replacements with identical or enhanced electrical specifications, and functionally equivalent alternatives with different package formats.

Parameter Comparison

Engineering Selection Recommendations

Tier 1 - Direct Replacement (Active Status, Identical Specifications): M24C01-RDW6TP from STMicroelectronics is the primary substitute, offering identical electrical specifications (400 kHz, 900 ns access time, 8-TSSOP package) with active product status and ROHS3 compliance. This part maintains full compatibility with existing designs.

Tier 2 - Enhanced Performance (Active Status, Improved Specifications): AT24CS01-XHM-T from Microchip Technology provides superior performance with 1 MHz clock frequency and 550 ns access time while maintaining the same 1.7V ~ 5.5V supply range and 8-TSSOP package. This part is suitable for applications requiring faster I2C communication.

Tier 3 - Alternative Packages (Active Status, Different Form Factor): BR24L01AFVM-WTR and BR24T01FVM-WTR from Rohm Semiconductor offer 8-MSOP package alternatives for designs requiring smaller footprint (0.110" width versus 0.173"). Both maintain 400 kHz operation and active product status.

Tier 4 - Not Recommended for New Designs: BR24L01AFV-WE2 and M24C01-WDW6TP carry "Not For New Designs" status and should be avoided for new product development, though they remain available for legacy system support.

Frequently Asked Questions (FAQ)

Q: Can AT24CS01-XHM-T replace 24AA014HT-I/ST in existing designs? A: Yes. AT24CS01-XHM-T is fully compatible as a direct substitute. The higher clock frequency (1 MHz versus 400 kHz) and faster access time (550 ns versus 900 ns) are backward compatible with systems designed for the original part. Both parts share identical memory organization, I2C interface, write cycle time, and voltage supply range.

Q: What is the difference between 8-TSSOP and 8-MSOP packages? A: Both are 8-pin surface mount packages with identical pin configurations and electrical compatibility. The primary difference is physical size: 8-TSSOP has 0.173" width while 8-MSOP has 0.110" width. Selection depends on PCB layout constraints and manufacturing equipment capabilities.

Q: Why do some substitute parts have different voltage supply ranges? A: Voltage supply range variations reflect different semiconductor process technologies and design specifications from different manufacturers. The original 24AA014HT-I/ST operates from 1.7V to 5.5V. Substitutes with narrower ranges (such as 1.8V ~ 5.5V or 2.5V ~ 5.5V) are still compatible with systems operating within their specified range, but may not support ultra-low voltage applications below 1.8V.

Q: Are parts marked "Not For New Designs" still usable? A: Parts with "Not For New Designs" status remain functionally equivalent and are suitable for replacement in existing systems or legacy product support. However, new product designs should prioritize parts with "Active" status to ensure long-term availability and manufacturer support.

Q: What does ROHS3 compliance mean for substitution? A: ROHS3 compliance indicates the part meets Restriction of Hazardous Substances regulations. All listed substitute parts maintain ROHS3 compliance, ensuring environmental and regulatory compatibility across the entire substitute list.