24LC65T-I/SM EEPROM Memory IC Equivalent & Substitute Parts

Part Overview

The 24LC65T-I/SM is a 64Kbit I2C EEPROM memory IC manufactured by Microchip Technology, supplied in Cut Tape (CT) & Digi-Reel® packaging. This non-volatile memory device operates at 400 kHz I2C clock frequency with 900 ns access time and supports a supply voltage range of 2.5V to 6.0V. The part is Active status and ROHS3 compliant. Equivalent and substitute parts are identified based on matching core electrical specifications: 64Kbit memory capacity, 8K x 8 organization, I2C interface, compatible operating temperature range (-40°C to 85°C), and surface mount packaging compatibility.

Substiute Parts

24LC65T-I/SM

Microchip TechnologyIn Stock: 302024LC65T-I/SM Datasheet

Current PartRFQ

24LC65-I/SM

Microchip TechnologyIn Stock: 1266724LC65-I/SM Datasheet

DirectRFQ

BR24G64F-3AGTE2

Rohm SemiconductorIn Stock: 2907BR24G64F-3AGTE2 Datasheet

MFR RecommendedRFQ

BR24G64F-3GTE2

Rohm SemiconductorIn Stock: 3357BR24G64F-3GTE2 Datasheet

MFR RecommendedRFQ

BR24T64F-WE2

Rohm SemiconductorIn Stock: 17763BR24T64F-WE2 Datasheet

MFR RecommendedRFQ

BR24T64FJ-WE2

Rohm SemiconductorIn Stock: 4938BR24T64FJ-WE2 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts are grouped based on the following substitution criteria derived from allowed electrical and mechanical parameters:

Primary Substitution Criteria:

• Memory capacity: 64Kbit
• Memory organization: 8K x 8
• Interface protocol: I2C
• Operating temperature range: -40°C to 85°C
• Write cycle time: 5ms
• Surface mount packaging: 8-SOIC form factor
• Supply voltage compatibility: Overlapping or extended voltage ranges

Grouping Logic:

Group 1 - Direct Microchip Equivalent: 24LC65-I/SM differs only in packaging format (Tube vs. Cut Tape), maintaining identical electrical specifications and 8-SOIC package dimensions.

Group 2 - Rohm Semiconductor Substitutes with Extended Specifications: BR24G64F-3AGTE2, BR24G64F-3GTE2, BR24T64F-WE2, and BR24T64FJ-WE2 maintain 64Kbit capacity, 8K x 8 organization, I2C interface, and 5ms write cycle time. These parts feature extended or compatible supply voltage ranges and identical operating temperature specifications. Clock frequency variations (1 MHz for BR24G64F-3AGTE2 vs. 400 kHz for others) and package width differences (4.40mm or 3.90mm vs. 5.30mm) represent parameter variations within acceptable substitution boundaries.

Parameter Comparison

Engineering Selection Recommendations

24LC65-I/SM (Microchip Technology): This part is the direct equivalent to 24LC65T-I/SM with identical electrical specifications and package dimensions. The only difference is packaging format (Tube vs. Cut Tape). Selection is appropriate when Tube packaging is acceptable and inventory availability is prioritized. Product status is Active with ROHS3 compliance and DiGi-Electronics Programmable verification.

BR24G64F-3AGTE2 (Rohm Semiconductor): This part supports extended I2C clock frequency at 1 MHz, providing higher performance capability while maintaining 64Kbit capacity and 5ms write cycle time. Supply voltage range is 1.7V to 5.5V, which overlaps with the primary part's range. Package width is reduced to 4.40mm. Product status is Active with ROHS3 compliance. DiGi-Electronics Programmable status is Not Verified.

BR24G64F-3GTE2 (Rohm Semiconductor): This part maintains 400 kHz I2C clock frequency matching the primary part's speed. Supply voltage range is 1.6V to 5.5V with identical operating temperature and write cycle specifications. Package width is 4.40mm. Product status is Active with ROHS3 compliance. DiGi-Electronics Programmable status is Not Verified.

BR24T64F-WE2 (Rohm Semiconductor): This part maintains 400 kHz I2C clock frequency and 5ms write cycle time. Supply voltage range is 1.6V to 5.5V. Package width is 4.40mm. Inventory availability is highest among substitute options at 17,700 pieces. Product status is Active with ROHS3 compliance. DiGi-Electronics Programmable status is Not Verified.

BR24T64FJ-WE2 (Rohm Semiconductor): This part maintains 400 kHz I2C clock frequency and 5ms write cycle time with supply voltage range of 1.6V to 5.5V. Package width is smallest at 3.90mm (8-SOP-J variant). Product status is Active with ROHS3 compliance. DiGi-Electronics Programmable status is Not Verified.

All substitute parts maintain ROHS3 compliance, MSL rating of 1 (Unlimited), and Active product status, supporting long-term availability and regulatory compliance requirements.

Frequently Asked Questions (FAQ)

Q: Can BR24G64F-3AGTE2 be used as a direct replacement for 24LC65T-I/SM?

A: BR24G64F-3AGTE2 is functionally compatible based on core memory specifications (64Kbit, 8K x 8, I2C interface, 5ms write cycle). However, the clock frequency is 1 MHz versus 400 kHz in the primary part, and the package width is 4.40mm versus 5.30mm. These differences require circuit board layout verification and I2C bus timing validation before implementation.

Q: What is the primary difference between 24LC65T-I/SM and 24LC65-I/SM?

A: Both parts are manufactured by Microchip Technology with identical electrical specifications and package dimensions (8-SOIC, 0.209", 5.30mm width). The difference is packaging format: 24LC65T-I/SM is supplied in Cut Tape (CT) & Digi-Reel®, while 24LC65-I/SM is supplied in Tube. Selection depends on assembly process requirements and inventory management preferences.

Q: Are Rohm Semiconductor parts (BR24G64F and BR24T64F series) pin-compatible with Microchip 24LC65 parts?

A: All substitute parts maintain 8-pin SOIC packaging with I2C interface compatibility. Pin configuration for I2C EEPROM devices (SDA, SCL, GND, VCC, WP, A0, A1, A2) is standardized across manufacturers. However, package width variations (3.90mm, 4.40mm, or 5.30mm) may affect PCB footprint compatibility. Physical layout verification is required before substitution.

Q: What supply voltage range should be used when selecting between these parts?

A: The primary part 24LC65T-I/SM operates at 2.5V to 6.0V. Rohm Semiconductor substitutes operate at lower minimum voltages (1.6V to 1.7V) with maximum voltage of 5.5V. When substituting, the circuit supply voltage must fall within the overlapping range of 2.5V to 5.5V to ensure compatibility with both primary and substitute parts.

Q: Do all parts support the same I2C clock frequency?

A: No. The primary part and most substitutes (BR24G64F-3GTE2, BR24T64F-WE2, BR24T64FJ-WE2) operate at 400 kHz. BR24G64F-3AGTE2 supports 1 MHz operation. I2C bus design must accommodate the slowest device on the bus, so higher-frequency parts can operate at lower speeds if required by system design.

Q: What is the significance of the MSL rating for these parts?

A: All listed parts have MSL rating of 1 (Unlimited), indicating unlimited shelf life without moisture bake-out requirements. This simplifies inventory management and reduces handling constraints compared to higher MSL ratings.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All parts listed—24LC65T-I/SM, 24LC65-I/SM, BR24G64F-3AGTE2, BR24G64F-3GTE2, BR24T64F-WE2, and BR24T64FJ-WE2—are ROHS3 compliant, meeting environmental and regulatory requirements for lead-free manufacturing.