24AA01HT-I/ST EEPROM Memory IC Equivalent & Substitute Parts

Part Overview

The 24AA01HT-I/ST is a 1Kbit I2C EEPROM memory integrated circuit manufactured by Microchip Technology in an 8-TSSOP surface mount package. This non-volatile memory device operates across a wide supply voltage range of 1.7V to 5.5V and maintains functionality across industrial temperature ranges from -40°C to 85°C. The device is actively produced and ROHS3 compliant, making it suitable for applications requiring persistent data storage with I2C serial interface communication.

Equivalent and substitute parts are identified when designs require alternative sourcing due to inventory constraints, supply chain considerations, or when functionally compatible alternatives from different manufacturers meet the same electrical and mechanical specifications.

Substiute Parts

24AA01HT-I/ST

Microchip TechnologyIn Stock: 99624AA01HT-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

BR24T01FVT-WE2

Rohm SemiconductorIn Stock: 1349BR24T01FVT-WE2 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

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

Primary Substitution Criteria:

• Memory capacity: 1Kbit (128 x 8 organization)
• Interface protocol: I2C serial communication
• Package format: 8-TSSOP surface mount
• Supply voltage compatibility: 1.7V ~ 5.5V range
• Operating temperature range: -40°C ~ 85°C
• Non-volatile EEPROM technology

Secondary Compatibility Factors:

• Clock frequency: 400 kHz minimum (higher frequencies are backward compatible)
• Access time: 900 ns or faster
• Write cycle time: 5ms
• RoHS3 compliance status
• Moisture sensitivity level: MSL 1 (Unlimited)

Substitute parts must maintain identical memory capacity, I2C interface, and 8-TSSOP package dimensions. Variations in clock frequency and access time do not prevent substitution when the substitute device meets or exceeds the performance specifications of the original part.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts maintain active production status and ROHS3 compliance, ensuring long-term availability and regulatory conformance equivalent to the 24AA01HT-I/ST.

AT24CS01-XHM-T (Microchip Technology): This substitute operates at 1 MHz clock frequency with 550 ns access time, both superior to the original specification. The device maintains identical supply voltage range (1.7V ~ 5.5V) and operating temperature specifications. Packaging is supplied as Cut Tape (CT) & Digi-Reel® rather than Tape & Reel (TR), which may affect procurement workflows but does not impact electrical or mechanical compatibility.

BR24G01FVT-3GE2 (Rohm Semiconductor): This substitute maintains 400 kHz clock frequency matching the original device. Supply voltage range extends to 1.6V minimum (compared to 1.7V), providing broader low-voltage compatibility. Package designation is 8-TSSOP-B, which maintains identical physical dimensions (0.173", 4.40mm Width) and surface mount compatibility. Supplied in Tape & Reel (TR) format.

BR24T01FVT-WE2 (Rohm Semiconductor): This substitute shares identical electrical specifications with BR24G01FVT-3GE2, including 400 kHz clock frequency and 1.6V ~ 5.5V supply voltage range. Package type is 8-TSSOP-B with matching physical dimensions. Supplied in Tape & Reel (TR) format.

All three substitute parts satisfy the core substitution criteria: 1Kbit capacity, I2C interface, 8-TSSOP package family, and full operating temperature range compatibility.

Frequently Asked Questions (FAQ)

Q: Can AT24CS01-XHM-T be used as a direct replacement for 24AA01HT-I/ST?

A: Yes. The AT24CS01-XHM-T meets all electrical and mechanical substitution criteria. The higher clock frequency (1 MHz vs. 400 kHz) and faster access time (550 ns vs. 900 ns) represent performance improvements that maintain backward compatibility with designs specified for the original device.

Q: What is the difference between 8-TSSOP and 8-TSSOP-B packages?

A: Both package designations refer to 8-pin Thin Shrink Small Outline Package with identical physical dimensions (0.173", 4.40mm Width). The "-B" suffix indicates a variant designation from Rohm Semiconductor. Pin configuration and PCB footprint compatibility are maintained across both designations for this memory device category.

Q: Are the Rohm Semiconductor parts (BR24G01FVT-3GE2 and BR24T01FVT-WE2) interchangeable with each other?

A: Yes. Both Rohm parts share identical electrical specifications, package type, and operating parameters. Selection between them may be determined by inventory availability or supply chain logistics rather than technical performance differences.

Q: Does the lower minimum supply voltage (1.6V) of Rohm parts affect compatibility?

A: No. The lower minimum voltage specification (1.6V vs. 1.7V) represents an expanded operating range. Designs specified for 1.7V ~ 5.5V operation remain fully compatible with devices rated for 1.6V ~ 5.5V.

Q: What packaging format differences exist between the substitute parts?

A: AT24CS01-XHM-T is supplied as Cut Tape (CT) & Digi-Reel®, while BR24G01FVT-3GE2 and BR24T01FVT-WE2 are supplied as Tape & Reel (TR). These differences affect component handling and assembly processes but do not impact electrical performance or PCB integration.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance status, matching the regulatory certification of the original 24AA01HT-I/ST device.