Equivalent & Substitute Parts for 24C01C-I/ST

Part Overview

The 24C01C-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 in an 8-TSSOP surface mount package. This component is actively produced and widely used in embedded systems requiring non-volatile memory storage. Substitute parts are identified to provide design flexibility, accommodate supply chain variations, and support alternative sourcing strategies while maintaining electrical and mechanical compatibility.

Substiute Parts

24C01C-I/ST

Microchip TechnologyIn Stock: 76224C01C-I/ST Datasheet

Current PartRFQ

24C01CT-I/ST

Microchip TechnologyIn Stock: 342124C01CT-I/ST Datasheet

DirectRFQ

24LC01B-I/ST

Microchip TechnologyIn Stock: 143624LC01B-I/ST Datasheet

MFR RecommendedRFQ

AT24CS01-XHM-T

Microchip TechnologyIn Stock: 25488AT24CS01-XHM-T Datasheet

MFR RecommendedRFQ

BR24G01FVT-3GE2

Rohm SemiconductorIn Stock: 1212BR24G01FVT-3GE2 Datasheet

MFR RecommendedRFQ

BR24L01AFVT-WE2

ROHM SemiconductorIn Stock: 5932BR24L01AFVT-WE2 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 is determined by strict alignment with the following critical parameters:

• Memory Capacity & Organization: All substitutes must provide 1Kbit capacity with 128 x 8 organization
• Interface Protocol: I2C interface is mandatory for all substitutes
• Package & Pinout: 8-TSSOP package with identical mechanical dimensions (0.173", 4.40mm Width)
• Operating Temperature Range: Must support -40°C ~ 85°C minimum
• Supply Voltage Compatibility: Substitute voltage ranges must encompass or exceed the main part's 4.5V ~ 5.5V range
• Compliance Standards: RoHS3 compliance and EAR99 classification maintained across all substitutes

Substitutes are grouped into two categories: direct equivalents (identical electrical specifications) and functional equivalents (compatible but with enhanced or different performance characteristics).

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalent (Preferred for Pin-Compatible Replacement)

24C01CT-I/ST is the primary direct substitute, offering identical electrical specifications to the 24C01C-I/ST with the only difference being packaging format (Cut Tape versus Tube). Both parts are manufactured by Microchip Technology, maintain Active product status, and provide 900 ns access time with 1 ms write cycle time. This part is suitable for direct board-level substitution without design modification.

Enhanced Performance Alternatives

AT24CS01-XHM-T provides superior clock frequency (1 MHz versus 400 kHz) and faster access time (550 ns versus 900 ns), with extended voltage range (1.7V ~ 5.5V). This part accommodates lower supply voltage applications while maintaining I2C protocol compatibility and 8-TSSOP packaging.

Cross-Manufacturer Substitutes

M24C01-RDW6TP (STMicroelectronics) and BR24L01AFVT-WE2 (ROHM Semiconductor) provide functional equivalence with 400 kHz I2C operation and 8-TSSOP packaging. These parts support extended voltage ranges (1.8V ~ 5.5V and 1.8V ~ 5.5V respectively) and are suitable for applications requiring multi-source component qualification.

Parts Not Recommended for New Designs

M24C01-WDW6TP carries "Not For New Designs" status and should be avoided in new product development despite electrical compatibility. This designation indicates manufacturer intent to discontinue the product line.

Frequently Asked Questions (FAQ)

Q: Can 24C01CT-I/ST replace 24C01C-I/ST directly on the PCB?

A: Yes. Both parts are electrically and mechanically identical with matching 8-TSSOP pinout, voltage specifications (4.5V ~ 5.5V), and I2C interface parameters. The only difference is packaging format (Cut Tape versus Tube), which does not affect circuit operation.

Q: What is the difference between 24LC01B-I/ST and 24C01C-I/ST?

A: The 24LC01B-I/ST has slower access time (4.6 µs versus 900 ns) and longer write cycle time (5 ms versus 1 ms), but supports lower supply voltage (2.5V minimum versus 4.5V). Both maintain 1Kbit capacity, 400 kHz I2C operation, and 8-TSSOP packaging. Use 24LC01B-I/ST only if lower voltage operation is required.

Q: Is AT24CS01-XHM-T compatible with 24C01C-I/ST?

A: Yes, with performance enhancement. AT24CS01-XHM-T operates at 1 MHz (versus 400 kHz) with 550 ns access time (versus 900 ns) and supports 1.7V ~ 5.5V supply range. The I2C protocol and 8-TSSOP package are identical. This part is suitable for applications requiring faster memory access.

Q: Can ROHM Semiconductor parts (BR24G01FVT-3GE2, BR24L01AFVT-WE2) replace Microchip parts?

A: Yes, functionally. Both manufacturers provide 1Kbit I2C EEPROM in 8-TSSOP packaging with 400 kHz operation and -40°C ~ 85°C temperature range. ROHM parts use 8-TSSOP-B variant packaging. Verify PCB footprint compatibility before substitution, as minor package variations may exist.

Q: Why is M24C01-WDW6TP marked "Not For New Designs"?

A: This designation indicates STMicroelectronics' intent to phase out this product variant. While electrically compatible, it should not be selected for new product development. Use M24C01-RDW6TP or alternative active-status parts instead.

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

A: 24C01C-I/ST and 24C01CT-I/ST require 4.5V minimum. 24LC01B-I/ST, M24C01-WDW6TP require 2.5V minimum. M24C01-RDW6TP, BR24G01FVT-3GE2, BR24T01FVT-WE2 require 1.8V or 1.6V minimum. AT24CS01-XHM-T supports 1.7V minimum. Select based on your circuit's supply voltage specification.

Q: Are all substitutes RoHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and EAR99 ECCN classification, matching the main part's regulatory status.