Equivalent & Substitute Parts for 24AA64/SN

Part Overview

The 24AA64/SN is a 64Kbit EEPROM memory IC manufactured by Microchip Technology, featuring I2C interface communication at 400 kHz with 900 ns access time. This non-volatile memory device is supplied in 8-SOIC surface mount packaging and operates across a 1.7V to 5.5V supply voltage range with standard industrial temperature specifications (0°C to 70°C). The device is ROHS3 compliant and actively supported in production.

Substitute parts are identified when they maintain electrical compatibility across memory capacity, interface protocol, supply voltage range, and physical packaging dimensions while accommodating variations in clock frequency, access time, and operating temperature ranges that do not compromise system functionality.

Key Parameters

Parameter	24AA64/SN
Memory Size	64Kbit
Memory Organization	8K x 8
Memory Interface	I2C
Clock Frequency	400 kHz
Access Time	900 ns
Write Cycle Time	5ms
Voltage Supply Range	1.7V ~ 5.5V
Operating Temperature	0°C ~ 70°C
Package / Case	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following mandatory parameters:

Core Compatibility Requirements:

Memory Size: 64Kbit (8K x 8 organization)
Memory Interface: I2C protocol
Supply Voltage Range: Must encompass or match 1.7V ~ 5.5V
Package / Case: 8-SOIC form factor with 3.90mm width (or compatible 8-SOP variants with 4.40mm width for mechanical interchangeability)
Mounting Type: Surface Mount

Variable Parameters Allowing Substitution:

Clock Frequency: 400 kHz (primary) or 1 MHz (faster operation acceptable)
Access Time: 900 ns (primary) or faster (400 ns, 550 ns acceptable)
Operating Temperature Range: May extend beyond 0°C ~ 70°C specification
Packaging Format: Tube, Tape & Reel, or Bulk configurations are interchangeable for the same electrical part

Substitute parts are grouped into two categories: Microchip Technology variants (same manufacturer, optimized temperature and speed grades) and cross-manufacturer alternatives (Rohm Semiconductor) maintaining identical electrical specifications.

Parameter Comparison

Part Number	Manufacturer	Memory Size	Interface	Clock Frequency	Access Time	Supply Voltage	Operating Temperature	Package	Product Status
24AA64/SN	Microchip Technology	64Kbit	I2C	400 kHz	900 ns	1.7V ~ 5.5V	0°C ~ 70°C	8-SOIC	Active
24AA64T/SN	Microchip Technology	64Kbit	I2C	400 kHz	900 ns	1.7V ~ 5.5V	0°C ~ 70°C	8-SOIC	Active
24AA64-E/SN	Microchip Technology	64Kbit	I2C	400 kHz	900 ns	1.7V ~ 5.5V	-40°C ~ 125°C	8-SOIC	Active
24AA64-I/SN	Microchip Technology	64Kbit	I2C	400 kHz	900 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-SOIC	Active
24FC64-I/SN	Microchip Technology	64Kbit	I2C	1 MHz	400 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-SOIC	Active
24FC64F-I/SN	Microchip Technology	64Kbit	I2C	1 MHz	400 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-SOIC	Active
AT24C64D-SSHM-B	Microchip Technology	64Kbit	I2C	1 MHz	550 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-SOIC	Active
AT24C64D-SSHM-T	Microchip Technology	64Kbit	I2C	1 MHz	550 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-SOIC	Active
AT24CS64-SSHM-B	Microchip Technology	64Kbit	I2C	1 MHz	550 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-SOIC	Active
BR24G64F-3AGTE2	Rohm Semiconductor	64Kbit	I2C	1 MHz	Not specified	1.7V ~ 5.5V	-40°C ~ 85°C	8-SOP	Active
BR24G64F-3GTE2	Rohm Semiconductor	64Kbit	I2C	400 kHz	Not specified	1.6V ~ 5.5V	-40°C ~ 85°C	8-SOP	Active

Engineering Selection Recommendations

Direct Substitutes (Identical Electrical Specifications):

24AA64T/SN serves as a direct substitute with identical electrical parameters. The only difference is packaging format (Tape & Reel versus Tube), which does not affect component functionality or compatibility.

Extended Temperature Range Alternatives:

24AA64-E/SN and 24AA64-I/SN provide extended operating temperature ranges (-40°C to 125°C and -40°C to 85°C respectively) while maintaining the 400 kHz I2C clock frequency and 900 ns access time. These are suitable for applications requiring broader temperature operation.

Higher Speed Variants:

24FC64-I/SN and 24FC64F-I/SN operate at 1 MHz clock frequency with 400 ns access time, providing faster I2C communication. These are electrically compatible substitutes for applications requiring higher data throughput.

AT24C64D Series:

AT24C64D-SSHM-B and AT24C64D-SSHM-T offer 1 MHz operation with 550 ns access time and extended temperature range (-40°C to 85°C). Both are ROHS3 compliant and actively produced. The -B variant is supplied in Tube packaging; the -T variant in Tape & Reel format.

AT24CS64-SSHM-B:

This variant maintains identical electrical specifications to AT24C64D series with 1 MHz clock frequency and 550 ns access time across -40°C to 85°C operating range.

Cross-Manufacturer Options (Rohm Semiconductor):

BR24G64F-3AGTE2 and BR24G64F-3GTE2 provide Rohm Semiconductor alternatives with 64Kbit I2C EEPROM functionality. BR24G64F-3AGTE2 operates at 1 MHz; BR24G64F-3GTE2 at 400 kHz. Both use 8-SOP packaging (4.40mm width) and support -40°C to 85°C temperature range. Supply voltage for BR24G64F-3GTE2 extends to 1.6V minimum.

All substitute parts maintain ROHS3 compliance and active production status, ensuring long-term availability and regulatory conformance.

Frequently Asked Questions (FAQ)

Q: Can 24AA64T/SN replace 24AA64/SN in production?

A: Yes. Both parts are electrically identical with 64Kbit capacity, 400 kHz I2C interface, 900 ns access time, and 1.7V to 5.5V supply voltage. The difference is packaging format: 24AA64T/SN uses Tape & Reel while 24AA64/SN uses Tube. Component functionality is unchanged.

Q: What is the difference between 24FC64-I/SN and 24AA64/SN?

A: 24FC64-I/SN operates at 1 MHz clock frequency with 400 ns access time, compared to 24AA64/SN at 400 kHz and 900 ns. Both maintain 64Kbit capacity and I2C interface. The faster clock and access time make 24FC64-I/SN suitable for applications requiring higher data rates. Operating temperature range extends to -40°C to 85°C.

Q: Are Rohm Semiconductor BR24G64F parts compatible with Microchip 24AA64/SN?

A: BR24G64F variants are electrically compatible as 64Kbit I2C EEPROM devices. BR24G64F-3GTE2 matches the 400 kHz clock frequency of 24AA64/SN. The primary difference is packaging: BR24G64F uses 8-SOP (4.40mm width) versus 24AA64/SN 8-SOIC (3.90mm width). PCB layout and footprint must accommodate the different package dimensions.

Q: Which substitute part supports the widest temperature range?

A: 24AA64-E/SN supports -40°C to 125°C operating temperature, the broadest range among available substitutes. This part maintains 400 kHz I2C operation and 900 ns access time while extending temperature capability beyond standard industrial specifications.

Q: Can I use AT24C64D-SSHM-T instead of 24AA64/SN?

A: Yes, with operational considerations. AT24C64D-SSHM-T is a 64Kbit I2C EEPROM with 1 MHz clock frequency and 550 ns access time. It operates across -40°C to 85°C and uses Tape & Reel packaging. The faster clock frequency and extended temperature range make it suitable for 24AA64/SN replacement in applications requiring these enhanced specifications.

Q: What does MSL (Moisture Sensitivity Level) indicate for component selection?

A: MSL defines moisture exposure limits during storage and handling. 24AA64/SN has MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. Some substitutes (24FC64-I/SN, AT24C64D variants, BR24G64F) have MSL 3 (168 Hours), requiring controlled storage conditions. Component selection should account for manufacturing and assembly environment moisture control capabilities.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance, ensuring regulatory conformance for applications subject to RoHS directives. REACH status is Unaffected across all variants.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message