24LC65/SM EEPROM Memory IC Equivalent & Substitute Parts

Part Overview

The 24LC65/SM is a 64Kbit I2C EEPROM memory IC manufactured by Microchip Technology, packaged in 8-SOIJ surface mount configuration. This non-volatile memory device operates at 400 kHz I2C clock frequency with 900 ns access time and supports supply voltages from 2.5V to 6.0V. The part is Active status and ROHS3 compliant. Substitute parts are identified when equivalent memory capacity, interface protocol, and electrical characteristics are required but the original part is unavailable or alternative sourcing is preferred.

Substiute Parts

24LC65/SM

Microchip TechnologyIn Stock: 626224LC65/SM Datasheet

Current PartRFQ

24LC65-I/SM

Microchip TechnologyIn Stock: 1266724LC65-I/SM Datasheet

MFR RecommendedRFQ

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

Substitution eligibility for the 24LC65/SM is determined by the following critical parameters:

• Memory Capacity: 64Kbit (8K x 8 organization) — all substitutes must match this capacity
• Interface Protocol: I2C — all substitutes must use I2C communication
• Memory Type: Non-Volatile EEPROM — all substitutes must be EEPROM technology
• Write Cycle Time: 5ms — all substitutes must support this specification
• Mounting Type: Surface Mount — all substitutes must be surface mount packages
• RoHS Compliance: ROHS3 Compliant — all substitutes must maintain compliance

Substitutes are grouped into two categories based on clock frequency and voltage supply range compatibility:

Category A (400 kHz I2C, Microchip): 24LC65-I/SM — identical electrical specifications with extended operating temperature range (-40°C to 85°C)

Category B (400 kHz I2C, Rohm Semiconductor): BR24G64F-3GTE2, BR24T64F-WE2, BR24T64FJ-WE2 — alternative manufacturer with compatible 400 kHz operation and extended temperature range

Category C (1 MHz I2C, Rohm Semiconductor): BR24G64F-3AGTE2 — higher clock frequency (1 MHz) with extended temperature range; suitable for applications not requiring 400 kHz limitation

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute (Recommended): 24LC65-I/SM — Microchip Technology manufacturer part with identical electrical specifications to the 24LC65/SM. This part maintains the same 400 kHz I2C clock frequency, 2.5V to 6.0V supply voltage range, and 8-SOIC package footprint. The extended operating temperature range (-40°C to 85°C) provides broader application compatibility. Active product status and ROHS3 compliance confirmed.

Secondary Substitutes (Rohm Semiconductor): BR24G64F-3GTE2 and BR24T64F-WE2 are functionally equivalent alternatives with 400 kHz I2C operation. Both parts maintain 64Kbit capacity, 5ms write cycle time, and ROHS3 compliance. Package dimensions differ slightly (4.40mm width vs. 5.30mm original), requiring PCB layout verification. Supply voltage range is 1.6V to 5.5V, which encompasses the original 2.5V to 6.0V specification.

Alternative for Higher Clock Frequency: BR24G64F-3AGTE2 operates at 1 MHz I2C clock frequency, suitable for applications requiring faster data transfer. This part maintains 64Kbit capacity and ROHS3 compliance but operates at lower minimum supply voltage (1.7V vs. 2.5V original). Package width is 4.40mm.

Packaging Consideration: BR24T64FJ-WE2 features the smallest package width (3.90mm) among Rohm alternatives, applicable to space-constrained designs.

Frequently Asked Questions (FAQ)

Q: Can 24LC65-I/SM directly replace 24LC65/SM in all applications?

A: Yes. Both parts share identical memory capacity (64Kbit), I2C interface (400 kHz), write cycle time (5ms), and package footprint (8-SOIC, 5.30mm width). The 24LC65-I/SM extends the operating temperature range to -40°C to 85°C, making it suitable for wider temperature environments. Both are ROHS3 compliant and Active status.

Q: What are the key differences between Microchip and Rohm substitute parts?

A: Microchip 24LC65-I/SM maintains the original supply voltage range (2.5V to 6.0V). Rohm parts (BR24G64F series) operate at lower minimum voltage (1.6V to 1.7V) and feature smaller package widths (4.40mm or 3.90mm vs. 5.30mm original). All maintain 64Kbit capacity, I2C interface, and ROHS3 compliance.

Q: Is BR24G64F-3AGTE2 compatible with 400 kHz I2C systems?

A: BR24G64F-3AGTE2 operates at 1 MHz I2C clock frequency. It is backward compatible with 400 kHz I2C systems, as the higher clock frequency does not prevent operation at lower speeds. However, applications strictly limited to 400 kHz should use BR24G64F-3GTE2 or BR24T64F-WE2 instead.

Q: Do package dimension differences affect PCB compatibility?

A: Yes. The original 24LC65/SM uses 8-SOIC with 5.30mm width. Rohm alternatives use 8-SOIC with 4.40mm (BR24G64F series, BR24T64F-WE2) or 3.90mm (BR24T64FJ-WE2) width. PCB footprint and land pattern must be verified before substitution. Pin pitch and lead configuration remain compatible across all parts.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance, matching the original 24LC65/SM specification.

Q: What is the difference between Tube and Tape & Reel packaging?

A: Tube packaging (24LC65/SM, 24LC65-I/SM) is suitable for manual assembly and smaller quantities. Tape & Reel packaging (Rohm parts) is optimized for automated pick-and-place assembly. Both contain identical die and electrical specifications; packaging format depends on assembly process requirements.