25AA080CT-I/MNY EEPROM Memory IC Equivalent & Substitute Parts

Part Overview

The 25AA080CT-I/MNY is an 8Kbit SPI EEPROM memory IC manufactured by Microchip Technology, packaged in 8-TDFN (2x3) with exposed pad. This non-volatile memory device operates at 10 MHz clock frequency and supports a supply voltage range of 1.8V to 5.5V, making it suitable for embedded systems requiring persistent data storage. The part is currently active in production with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified based on matching core electrical specifications: 8Kbit memory capacity, 1K x 8 organization, SPI interface, 5ms write cycle time, identical supply voltage range, and compatible operating temperature range.

Key Parameters

Parameter	Value
Memory Size	8Kbit
Memory Organization	1K x 8
Memory Interface	SPI
Clock Frequency	10 MHz
Write Cycle Time	5ms
Voltage Supply Range	1.8V ~ 5.5V
Operating Temperature	-40°C ~ 85°C
Package Type	8-TDFN (2x3) Exposed Pad
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the 25AA080CT-I/MNY is determined by the following mandatory parameters:

Memory capacity: 8Kbit
Memory organization: 1K x 8
Interface protocol: SPI
Write cycle time: 5ms (or faster)
Supply voltage range: Must encompass 1.8V ~ 5.5V minimum
Operating temperature: Must support -40°C ~ 85°C minimum
Package compatibility: Surface mount with exposed pad

Five substitute parts meet these criteria. The 25AA080DT-I/MNY is a direct Microchip equivalent differing only in packaging format (Tape & Reel vs. Cut Tape). The AT25080B-MAHL-T operates at 20 MHz (exceeding the 10 MHz requirement) with identical memory specifications. The CAT25080HU4I-GT3 from onsemi matches all electrical parameters with package compatibility. The M95080-DFMC6TG and M95080-RMC6TG from STMicroelectronics both operate at 20 MHz with compatible electrical and thermal specifications. The M95080-DRMF3TG/K variant includes automotive qualification (AEC-Q100) and extended temperature range (-40°C ~ 125°C) with 4ms write cycle time.

Parameter Comparison

Parameter	25AA080CT-I/MNY	25AA080DT-I/MNY	AT25080B-MAHL-T	CAT25080HU4I-GT3	M95080-DFMC6TG	M95080-RMC6TG	M95080-DRMF3TG/K
Manufacturer	Microchip	Microchip	Microchip	onsemi	STMicroelectronics	STMicroelectronics	STMicroelectronics
Memory Size	8Kbit	8Kbit	8Kbit	8Kbit	8Kbit	8Kbit	8Kbit
Memory Organization	1K x 8	1K x 8	1K x 8	1K x 8	1K x 8	1K x 8	1K x 8
SPI Interface	Yes	Yes	Yes	Yes	Yes	Yes	Yes
Clock Frequency	10 MHz	10 MHz	20 MHz	Not specified	20 MHz	20 MHz	20 MHz
Write Cycle Time	5ms	5ms	5ms	5ms	5ms	5ms	4ms
Voltage Supply	1.8V ~ 5.5V	1.8V ~ 5.5V	1.8V ~ 5.5V	1.8V ~ 5.5V	1.7V ~ 5.5V	1.8V ~ 5.5V	1.8V ~ 5.5V
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 125°C
Package Type	8-TDFN (2x3)	8-TDFN (2x3)	8-UDFN (2x3)	8-UDFN-EP (2x3)	8-UFDFPN (2x3)	8-UFDFPN (2x3)	8-MLP (2x3)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)	3 (168 Hours)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

All seven parts listed maintain active production status with ROHS3 compliance and REACH unaffected designation, meeting standard environmental and regulatory requirements.

The 25AA080DT-I/MNY provides direct functional equivalence to the 25AA080CT-I/MNY with identical electrical specifications and differs only in packaging format (Tape & Reel). This part is suitable for direct substitution in high-volume manufacturing environments.

The AT25080B-MAHL-T, CAT25080HU4I-GT3, M95080-DFMC6TG, and M95080-RMC6TG all support higher clock frequencies (20 MHz) than the original 10 MHz specification while maintaining backward compatibility with all electrical and thermal parameters. These parts are suitable for applications where increased data transfer rates provide system benefits.

The M95080-DRMF3TG/K variant includes AEC-Q100 automotive qualification and supports extended operating temperature range to 125°C with improved write cycle time (4ms). This part is specified for automotive and high-temperature industrial applications.

Moisture sensitivity considerations: The AT25080B-MAHL-T carries MSL 3 rating (168 hours), requiring controlled storage conditions. All other substitutes maintain MSL 1 (unlimited) rating, matching the original part's handling requirements.

Frequently Asked Questions (FAQ)

Q: Can the 25AA080DT-I/MNY replace the 25AA080CT-I/MNY in existing designs?

A: Yes. The 25AA080DT-I/MNY is electrically and functionally identical to the 25AA080CT-I/MNY. The difference is packaging format: Cut Tape (CT) versus Tape & Reel (TR). Both use the same 8-TDFN (2x3) package footprint and pinout.

Q: What is the significance of the 20 MHz clock frequency in substitute parts?

A: The AT25080B-MAHL-T, M95080-DFMC6TG, M95080-RMC6TG, and M95080-DRMF3TG/K operate at 20 MHz, double the original 10 MHz specification. This higher frequency is backward compatible—these parts operate correctly in circuits designed for 10 MHz operation. The higher frequency capability allows faster data transfer rates if the system design supports it.

Q: Are package differences between substitutes significant?

A: Package differences exist but all substitutes use 8-pin surface-mount packages with 2x3mm footprints and exposed pads. The 25AA080CT-I/MNY and 25AA080DT-I/MNY use 8-TDFN; AT25080B-MAHL-T and CAT25080HU4I-GT3 use 8-UDFN variants; M95080 series use 8-UFDFPN or 8-MLP. PCB layout compatibility requires verification of specific package dimensions and pin assignments, though all maintain identical pinout functionality for SPI EEPROM operation.

Q: What does MSL 3 rating mean for the AT25080B-MAHL-T?

A: MSL 3 (Moisture Sensitivity Level 3) requires storage at controlled humidity (≤60% RH) for up to 168 hours before soldering. The original 25AA080CT-I/MNY carries MSL 1 (unlimited), requiring no special storage conditions. If moisture-sensitive handling is not feasible in your manufacturing environment, select substitutes with MSL 1 rating.

Q: When should the M95080-DRMF3TG/K automotive variant be selected?

A: The M95080-DRMF3TG/K is specified for automotive and industrial applications requiring AEC-Q100 qualification and extended temperature operation to 125°C. Select this variant only if your application requires automotive-grade components or operates in high-temperature environments exceeding 85°C.

Q: Are all substitutes compatible with 1.8V supply voltage?

A: The M95080-DFMC6TG supports 1.7V minimum supply voltage, slightly lower than the 1.8V minimum of the original part. All other substitutes maintain the 1.8V minimum specification. For applications operating at or near 1.8V, verify the M95080-DFMC6TG datasheet for specific low-voltage performance characteristics.

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