Equivalent & Substitute Parts for 24FC515T-I/SM

Part Overview

The 24FC515T-I/SM is a 512Kbit EEPROM memory IC manufactured by Microchip Technology, featuring I2C interface with 1 MHz clock frequency and 400 ns access time. This part is in active product status and is ROHS3 compliant. Substitute parts are identified to address packaging variations, inventory availability, and operational parameter differences while maintaining core functional compatibility within the 512Kbit I2C EEPROM category.

Key Parameters

Parameter	Value
Memory Size	512Kbit
Memory Organization	64K x 8
Memory Interface	I2C
Clock Frequency	1 MHz
Access Time	400 ns
Write Cycle Time	5ms
Voltage Supply Range	2.5V ~ 5.5V
Operating Temperature	-40°C ~ 85°C
Package Type	8-SOIC (0.209", 5.30mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following criteria:

Core Functional Requirements (Non-Negotiable):

Memory Size: 512Kbit
Memory Organization: 64K x 8
Memory Interface: I2C
Package Type: 8-SOIC/8-SOIJ form factor
Mounting Type: Surface Mount
RoHS Status: ROHS3 Compliant

Performance Parameters (Allowable Variation):

Clock Frequency: 400 kHz or 1 MHz
Access Time: 400 ns, 550 ns, or 900 ns
Voltage Supply Range: Must encompass or exceed 2.5V ~ 5.5V
Operating Temperature: Must support -40°C ~ 85°C minimum

Packaging Format (Interchangeable):

Tape & Reel (TR), Tube, or Cut Tape (CT) & Digi-Reel® formats are functionally equivalent for component selection

Substitute parts meeting these criteria are listed below with their specific parameter deviations noted.

Parameter Comparison

Part Number	Manufacturer	Memory Size	Clock Frequency	Access Time	Voltage Supply	Operating Temp	Package Width	Packaging Format	Product Status
24FC515T-I/SM	Microchip	512Kbit	1 MHz	400 ns	2.5V ~ 5.5V	-40°C ~ 85°C	5.30mm	Tape & Reel	Active
24FC515-I/SM	Microchip	512Kbit	1 MHz	400 ns	2.5V ~ 5.5V	-40°C ~ 85°C	5.30mm	Tube	Active
24AA512T-I/SM	Microchip	512Kbit	400 kHz	900 ns	1.7V ~ 5.5V	-40°C ~ 85°C	5.30mm	Cut Tape & Digi-Reel	Active
24FC512T-I/SM	Microchip	512Kbit	1 MHz	400 ns	1.7V ~ 5.5V	-40°C ~ 85°C	5.30mm	Cut Tape & Digi-Reel	Active
24LC512-I/SM	Microchip	512Kbit	400 kHz	900 ns	2.5V ~ 5.5V	-40°C ~ 85°C	5.30mm	Tube	Active
24LC512T-E/SM	Microchip	512Kbit	400 kHz	900 ns	2.5V ~ 5.5V	-40°C ~ 125°C	5.30mm	Cut Tape & Digi-Reel	Active
24LC512T-I/SM	Microchip	512Kbit	400 kHz	900 ns	2.5V ~ 5.5V	-40°C ~ 85°C	5.30mm	Cut Tape & Digi-Reel	Active
AT24C512C-SHD-T	Microchip	512Kbit	1 MHz	550 ns	2.5V ~ 5.5V	-40°C ~ 85°C	5.30mm	Cut Tape & Digi-Reel	Active
CAT24C512XI-T2	onsemi	512Kbit	1 MHz	900 ns	1.8V ~ 5.5V	-40°C ~ 85°C	3.90mm	Cut Tape & Digi-Reel	Active
CAV24C512WE-GT3	onsemi	512Kbit	1 MHz	900 ns	2.5V ~ 5.5V	-40°C ~ 125°C	3.90mm	Cut Tape & Digi-Reel	Active
M24512-DRMN3TP/K	STMicroelectronics	512Kbit	1 MHz	450 ns	1.8V ~ 5.5V	-40°C ~ 125°C	3.90mm	Cut Tape & Digi-Reel	Active

Engineering Selection Recommendations

Microchip Technology Direct Substitutes (Verified Programmable): 24FC515-I/SM, 24FC512T-I/SM, and 24LC512T-I/SM are direct functional equivalents with identical core specifications. Selection among these is determined by packaging format availability and voltage supply requirements. 24FC512T-I/SM offers extended lower voltage operation (1.7V minimum) compared to the main part (2.5V minimum).

Extended Temperature Range Options: 24LC512T-E/SM and CAV24C512WE-GT3 support -40°C ~ 125°C operating temperature, exceeding the main part specification of -40°C ~ 85°C. These are suitable for applications requiring higher temperature operation.

Lower Clock Frequency Alternatives: 24AA512T-I/SM and 24LC512-I/SM operate at 400 kHz instead of 1 MHz, with corresponding 900 ns access time. These are functionally compatible for applications not requiring 1 MHz clock frequency.

Cross-Manufacturer Options: CAT24C512XI-T2 (onsemi) and M24512-DRMN3TP/K (STMicroelectronics) provide alternative sourcing. M24512-DRMN3TP/K includes AEC-Q100 automotive qualification and extended temperature range (-40°C ~ 125°C). CAT24C512XI-T2 is DiGi-Electronics Programmable verified.

Compliance Status: All listed substitutes maintain ROHS3 compliance and REACH unaffected status. AT24C512C-SHD-T carries MSL 3 (168 Hours) moisture sensitivity versus MSL 1 (Unlimited) for most alternatives.

Frequently Asked Questions (FAQ)

Q: Can 24LC512T-I/SM replace 24FC515T-I/SM in my application? A: Yes, if your application does not require 1 MHz clock frequency. 24LC512T-I/SM operates at 400 kHz with 900 ns access time versus the main part's 1 MHz and 400 ns. Both support identical voltage range (2.5V ~ 5.5V) and temperature range (-40°C ~ 85°C).

Q: What is the difference between packaging formats (Tape & Reel, Tube, Cut Tape)? A: Packaging format affects handling and storage but does not impact electrical or mechanical compatibility. Tape & Reel, Tube, and Cut Tape & Digi-Reel® formats are interchangeable for component selection purposes.

Q: Is AT24C512C-SHD-T compatible with 24FC515T-I/SM? A: Yes, functionally compatible. AT24C512C-SHD-T has 550 ns access time versus 400 ns for the main part, and carries MSL 3 moisture sensitivity versus MSL 1. Both operate at 1 MHz and support 2.5V ~ 5.5V voltage range.

Q: Can I use M24512-DRMN3TP/K in automotive applications? A: M24512-DRMN3TP/K is AEC-Q100 qualified and rated for -40°C ~ 125°C, making it suitable for automotive grade applications. The main part 24FC515T-I/SM is not automotive qualified.

Q: What is the minimum voltage requirement for each substitute? A: 24FC512T-I/SM and 24AA512T-I/SM support 1.7V minimum. CAT24C512XI-T2 and M24512-DRMN3TP/K support 1.8V minimum. All others support 2.5V minimum. Verify your application's voltage supply range before selection.

Q: Are all substitutes DiGi-Electronics Programmable verified? A: No. CAT24C512XI-T2 is verified. AT24C512C-SHD-T, CAV24C512WE-GT3, and M24512-DRMN3TP/K are not verified. Microchip parts 24FC515-I/SM, 24FC512T-I/SM, 24LC512-I/SM, and 24LC512T-I/SM are verified.

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