Equivalent & Substitute Parts for 25AA010AT-I/ST

Part Overview

The 25AA010AT-I/ST is a 1Kbit EEPROM memory IC manufactured by Microchip Technology, featuring SPI interface operation at 10 MHz with 8-TSSOP surface mount packaging. This device is classified as Active product status and is ROHS3 compliant. Equivalent and substitute parts are identified to address inventory availability, packaging preferences, performance requirements, or manufacturer sourcing flexibility while maintaining functional compatibility within the specified electrical and mechanical parameters.

Key Parameters

Parameter	Value
Memory Type	Non-Volatile EEPROM
Memory Size	1Kbit
Memory Organization	128 x 8
Memory Interface	SPI
Clock Frequency	10 MHz (Main Part) / 20 MHz (Substitutes)
Write Cycle Time	5ms
Voltage Supply Range	1.8V ~ 5.5V (Main Part) / 2.5V ~ 5.5V (M95010-WDW6TP)
Operating Temperature	-40°C ~ 85°C
Package / Case	8-TSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict adherence to the following parameters:

Core Compatibility Requirements:

Memory Size: 1Kbit (128 x 8 organization)
Memory Interface: SPI
Package / Case: 8-TSSOP (0.173", 4.40mm Width)
Mounting Type: Surface Mount
Operating Temperature: -40°C ~ 85°C
Write Cycle Time: 5ms
Voltage Supply Range: Overlapping or compatible with 1.8V ~ 5.5V
RoHS Status: ROHS3 Compliant

Allowed Variations:

Clock Frequency: 10 MHz or higher (20 MHz substitutes are backward compatible)
Manufacturer: Microchip Technology, STMicroelectronics, onsemi
Packaging Format: Tube, Cut Tape (CT) & Digi-Reel®, Tape & Reel (TR)
Product Status: Active

All identified substitute parts meet these criteria and are functionally interchangeable within the specified electrical and mechanical constraints.

Parameter Comparison

Part Number	Manufacturer	Memory Size	Clock Frequency	Voltage Supply	Package	Packaging Format	Product Status	Inventory (Pcs)
25AA010AT-I/ST	Microchip Technology	1Kbit	10 MHz	1.8V ~ 5.5V	8-TSSOP	Not Specified	Active	2178
25AA010A-I/ST	Microchip Technology	1Kbit	10 MHz	1.8V ~ 5.5V	8-TSSOP	Tube	Active	3305
AT25010B-XHL-B	Microchip Technology	1Kbit	20 MHz	1.8V ~ 5.5V	8-TSSOP	Tube	Active	2078
AT25010B-XHL-T	Microchip Technology	1Kbit	20 MHz	1.8V ~ 5.5V	8-TSSOP	Cut Tape (CT) & Digi-Reel®	Active	10200
CAT25010YI-GT3	onsemi	1Kbit	20 MHz	1.8V ~ 5.5V	8-TSSOP	Tape & Reel (TR)	Active	1315
M95010-RDW6TP	STMicroelectronics	1Kbit	20 MHz	1.8V ~ 5.5V	8-TSSOP	Tape & Reel (TR)	Active	17100
M95010-WDW6TP	STMicroelectronics	1Kbit	20 MHz	2.5V ~ 5.5V	8-TSSOP	Tape & Reel (TR)	Active	29200

Engineering Selection Recommendations

Direct Equivalent (Same Specifications):

25AA010A-I/ST: Identical electrical specifications to the main part with Tube packaging. Suitable for applications requiring the same 10 MHz clock frequency and 1.8V minimum supply voltage.

Higher Performance Substitutes (20 MHz Clock Frequency):

AT25010B-XHL-B, AT25010B-XHL-T, CAT25010YI-GT3, M95010-RDW6TP: These parts operate at 20 MHz, providing enhanced performance headroom while maintaining full backward compatibility with 10 MHz system designs. All maintain the 1.8V ~ 5.5V supply range.

Voltage-Constrained Substitute:

M95010-WDW6TP: Operates at 20 MHz with a minimum supply voltage of 2.5V. This part is suitable only for applications where the system supply voltage does not drop below 2.5V. Not recommended for designs requiring 1.8V operation.

Packaging and Inventory Considerations:

AT25010B-XHL-T offers the highest inventory (10,200 pcs) in Cut Tape & Digi-Reel® format, suitable for high-volume production.
M95010-WDW6TP provides the largest stock (29,200 pcs) in Tape & Reel format for automated assembly.
All parts maintain ROHS3 compliance and Active product status.

Frequently Asked Questions (FAQ)

Q: Can AT25010B-XHL-T replace 25AA010AT-I/ST directly? A: Yes. The AT25010B-XHL-T is functionally compatible. It operates at 20 MHz (higher than the 10 MHz main part) but maintains identical memory capacity, SPI interface, 8-TSSOP package, and 1.8V ~ 5.5V supply range. The higher clock frequency is backward compatible with 10 MHz system designs.

Q: What is the difference between 25AA010A-I/ST and 25AA010AT-I/ST? A: Both parts share identical electrical specifications (1Kbit, 10 MHz, SPI, 1.8V ~ 5.5V). The primary difference is packaging format: 25AA010A-I/ST is supplied in Tube format, while 25AA010AT-I/ST packaging format is not specified in the provided data.

Q: Is M95010-WDW6TP suitable for all applications using 25AA010AT-I/ST? A: M95010-WDW6TP is suitable only for applications where the system supply voltage remains at or above 2.5V. It is not recommended for designs requiring operation at 1.8V minimum supply voltage. Verify your system's minimum supply voltage before selection.

Q: Why do some substitutes operate at 20 MHz instead of 10 MHz? A: Higher clock frequency provides enhanced performance margin and is backward compatible with 10 MHz designs. Systems designed for 10 MHz operation function correctly with 20 MHz parts without modification.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All identified substitute parts maintain ROHS3 compliance and are suitable for applications with RoHS requirements.

Q: What packaging formats are available for high-volume production? A: AT25010B-XHL-T (Cut Tape & Digi-Reel®, 10,200 pcs) and M95010-WDW6TP (Tape & Reel, 29,200 pcs) are optimized for automated assembly and high-volume manufacturing.

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