AT88SC6416C-SU Equivalent & Substitute Parts

Part Overview

The AT88SC6416C-SU is a Secure Memory IC manufactured by Microchip Technology, classified as CryptoMemory® series secure memory for embedded and smart card applications. This 8-SOIC surface mount device provides 64Kbit secure memory storage with cryptographic capabilities. The part is currently Active in product status with 8200 units in stock inventory.

Substitute parts are identified based on functional compatibility within the 64Kbit memory capacity, 8-SOIC package format, and I2C interface specifications. Alternative models may be required due to inventory constraints, specific voltage supply requirements, operating temperature ranges, or access time performance needs for particular application requirements.

Key Parameters

Parameter	AT88SC6416C-SU
Manufacturer	Microchip Technology
Memory Size	64Kbit
Memory Organization	8K x 8
Memory Interface	I2C
Package / Case	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Product Status	Active
Moisture Sensitivity Level	3 (168 Hours)

Substitute Part Grouping Explanation

Substitute parts are grouped based on strict compatibility with the following electrical and mechanical parameters:

Primary Compatibility Criteria:

Memory Size: 64Kbit (8K x 8 organization)
Memory Interface: I2C protocol
Package Format: 8-SOIC (0.154", 3.90mm Width)
Mounting Type: Surface Mount
RoHS Compliance: ROHS3 Compliant
Supplier Device Package: 8-SOIC

Secondary Differentiation Parameters:

Clock Frequency: 400 kHz (standard) or 1 MHz (fast)
Access Time: 900 ns (standard) or 400-550 ns (fast variants)
Voltage Supply Range: 1.7V–5.5V, 2.5V–5.5V, or 2.7V–5.5V
Operating Temperature: -40°C to 125°C or -40°C to 85°C
Write Cycle Time: 5ms (consistent across all variants)
Moisture Sensitivity Level: 1 (Unlimited) or 3 (168 Hours)

Substitute parts maintain identical memory capacity, interface protocol, and physical package specifications. Variations in clock frequency, access time, voltage supply range, and operating temperature represent performance and environmental capability differences that determine suitability for specific application requirements.

Parameter Comparison

Part Number	Manufacturer	Memory Size	Memory Interface	Clock Frequency	Access Time	Voltage Supply	Operating Temperature	Package	MSL	Product Status	Inventory (Pcs)
AT88SC6416C-SU	Microchip Technology	64Kbit	I2C	Not Specified	Not Specified	Not Specified	Not Specified	8-SOIC	3	Active	8200
24AA64-E/SN	Microchip Technology	64Kbit	I2C	400 kHz	900 ns	1.7V–5.5V	-40°C to 125°C	8-SOIC	1	Active	1749
24AA64-I/SN	Microchip Technology	64Kbit	I2C	400 kHz	900 ns	1.7V–5.5V	-40°C to 85°C	8-SOIC	1	Active	2316
24AA64F-I/SN	Microchip Technology	64Kbit	I2C	400 kHz	900 ns	1.7V–5.5V	-40°C to 85°C	8-SOIC	1	Active	2071
24FC64-I/SN	Microchip Technology	64Kbit	I2C	1 MHz	400 ns	1.7V–5.5V	-40°C to 85°C	8-SOIC	3	Active	1237
24FC64F-I/SN	Microchip Technology	64Kbit	I2C	1 MHz	400 ns	1.7V–5.5V	-40°C to 85°C	8-SOIC	1	Active	2283
24LC64-E/SN	Microchip Technology	64Kbit	I2C	400 kHz	900 ns	2.5V–5.5V	-40°C to 125°C	8-SOIC	3	Active	2626
24LC64F-E/SN	Microchip Technology	64Kbit	I2C	400 kHz	900 ns	2.5V–5.5V	-40°C to 125°C	8-SOIC	1	Active	1373
24LC64F-I/SN	Microchip Technology	64Kbit	I2C	400 kHz	900 ns	2.5V–5.5V	-40°C to 85°C	8-SOIC	1	Active	3300
AT24C64BN-10SU-2.7	Microchip Technology	64Kbit	I2C	400 kHz	900 ns	2.7V–5.5V	-40°C to 85°C	8-SOIC	3	Active	1416
AT24C64D-SSHM-B	Microchip Technology	64Kbit	I2C	1 MHz	550 ns	1.7V–5.5V	-40°C to 85°C	8-SOIC	3	Active	10176

Engineering Selection Recommendations

All substitute parts listed maintain Active product status and ROHS3 compliance, ensuring long-term availability and regulatory conformance equivalent to the AT88SC6416C-SU.

Selection based on voltage supply requirements:

For applications requiring extended low-voltage operation (1.7V minimum): Select 24AA64-E/SN, 24AA64-I/SN, 24AA64F-I/SN, 24FC64-I/SN, 24FC64F-I/SN, or AT24C64D-SSHM-B
For applications with 2.5V minimum supply voltage: Select 24LC64-E/SN, 24LC64F-E/SN, or 24LC64F-I/SN
For applications with 2.7V minimum supply voltage: Select AT24C64BN-10SU-2.7

Selection based on operating temperature range:

For extended temperature operation (-40°C to 125°C): Select 24AA64-E/SN or 24LC64-E/SN
For standard industrial temperature range (-40°C to 85°C): Select from remaining substitute options

Selection based on access time performance:

For standard access time (900 ns): Select 24AA64 series or 24LC64 series or AT24C64BN-10SU-2.7
For fast access time (400-550 ns): Select 24FC64 series or AT24C64D-SSHM-B

Selection based on moisture sensitivity:

For MSL 1 (Unlimited): Select 24AA64F-I/SN, 24FC64F-I/SN, 24LC64F-E/SN, or 24LC64F-I/SN
For MSL 3 (168 Hours): Select 24FC64-I/SN, 24LC64-E/SN, AT24C64BN-10SU-2.7, or AT24C64D-SSHM-B

Programmability verification status:

DiGi-Electronics Verified Programmable: 24AA64-E/SN, 24LC64-E/SN, AT24C64BN-10SU-2.7, AT24C64D-SSHM-B
Not Verified: 24AA64F-I/SN, 24AA64-I/SN, 24FC64-I/SN, 24FC64F-I/SN, 24LC64F-E/SN, 24LC64F-I/SN

Frequently Asked Questions (FAQ)

Q: Can all listed substitute parts replace the AT88SC6416C-SU in existing designs?

A: All substitute parts share identical 64Kbit memory capacity, 8K x 8 organization, I2C interface protocol, and 8-SOIC package format. Compatibility depends on application-specific requirements for voltage supply range, operating temperature, access time performance, and moisture sensitivity level. Design verification is required to confirm electrical and environmental parameter compatibility.

Q: What is the primary difference between 24AA64, 24FC64, and 24LC64 series?

A: The 24AA64 series operates at 400 kHz clock frequency with 900 ns access time and supports 1.7V–5.5V supply voltage. The 24FC64 series operates at 1 MHz clock frequency with 400 ns access time and supports 1.7V–5.5V supply voltage. The 24LC64 series operates at 400 kHz clock frequency with 900 ns access time and supports 2.5V–5.5V supply voltage. Selection depends on required clock speed, access time performance, and minimum supply voltage specification.

Q: What does the "-E" and "-I" suffix indicate in part numbers?

A: The "-E" suffix indicates extended operating temperature range (-40°C to 125°C). The "-I" suffix indicates industrial operating temperature range (-40°C to 85°C). Selection depends on application thermal environment requirements.

Q: What does the "F" designation in part numbers mean?

A: The "F" designation indicates a variant with different moisture sensitivity level or packaging characteristics. Specific technical differences are identified in the detailed parameter specifications. Consult detailed datasheets for variant-specific characteristics.

Q: Are all substitute parts RoHS3 compliant?

A: Yes, all listed substitute parts are ROHS3 Compliant, ensuring regulatory conformance for applications requiring RoHS compliance.

Q: What is the significance of Moisture Sensitivity Level (MSL)?

A: MSL rating indicates the maximum time a component can be exposed to moisture at specified temperature and humidity conditions before soldering. MSL 1 (Unlimited) allows indefinite storage without moisture control. MSL 3 (168 Hours) requires moisture control and limits storage to 168 hours at specified conditions. Selection depends on manufacturing process and storage environment capabilities.

Q: Which substitute part has the highest inventory availability?

A: AT24C64D-SSHM-B has the highest inventory with 10,176 units in stock, followed by 24LC64F-I/SN with 3,300 units.

Q: Can I use a 1 MHz part as a substitute for a 400 kHz application?

A: Yes, 1 MHz parts (24FC64 series and AT24C64D-SSHM-B) are backward compatible with 400 kHz applications. The higher clock frequency provides improved access time performance without compromising functionality in lower-speed applications.

Q: What is the write cycle time for all substitute parts?

A: All substitute parts maintain a consistent 5ms write cycle time for word and page write operations, ensuring equivalent write performance across all alternatives.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message