Equivalent & Substitute Parts for 25AA080D-I/MS

Part Overview

The 25AA080D-I/MS is an 8Kbit SPI EEPROM memory IC manufactured by Microchip Technology, operating at 10 MHz with a supply voltage range of 1.8V to 5.5V. This device is housed in an 8-MSOP package and is classified as Active product status. The part is ROHS3 compliant with unlimited moisture sensitivity level (MSL 1).

Substitute parts are necessary when the primary part experiences supply constraints, extended lead times, or when design requirements permit operation at higher clock frequencies or alternative voltage specifications while maintaining core functional compatibility.

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-MSOP (0.118", 3.00mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the 25AA080D-I/MS is determined by the following critical parameters:

Primary Substitution Criteria:

Memory capacity: 8Kbit (1K x 8 organization)
Interface protocol: SPI
Package compatibility: 8-MSOP or 8-TSSOP footprints
Voltage supply range: Minimum 1.8V, maximum 5.5V
Operating temperature range: -40°C to 85°C minimum
Write cycle time: 5ms maximum

Secondary Considerations:

Clock frequency: 10 MHz or higher
RoHS compliance status
Moisture sensitivity level
Product status (Active)

Substitute parts are grouped into two categories:

Category A - Direct Pin-Compatible Substitutes (8-MSOP Package): Parts maintaining the original 8-MSOP package footprint with identical or superior electrical specifications.

Category B - Functional Equivalents (8-TSSOP Package): Parts with identical memory specifications but different package geometry (8-TSSOP), requiring PCB layout modification but offering enhanced performance or availability.

Parameter Comparison

Part Number	Manufacturer	Memory Size	Clock Frequency (MHz)	Package	Voltage Supply (V)	Operating Temp (°C)	Write Cycle (ms)	RoHS Status
25AA080D-I/MS	Microchip Technology	8Kbit	10	8-MSOP	1.8 ~ 5.5	-40 ~ 85	5	ROHS3
25AA080C-I/MS	Microchip Technology	8Kbit	10	8-MSOP	1.8 ~ 5.5	-40 ~ 85	5	ROHS3
BR25H080FVM-2CTR	Rohm Semiconductor	8Kbit	10	8-MSOP	2.5 ~ 5.5	-40 ~ 125	4	ROHS3
AT25080B-XHL-B	Microchip Technology	8Kbit	20	8-TSSOP	1.8 ~ 5.5	-40 ~ 85	5	ROHS3
AT25080B-XHL-T	Microchip Technology	8Kbit	20	8-TSSOP	1.8 ~ 5.5	-40 ~ 85	5	ROHS3
CAT25080YI-GT3	onsemi	8Kbit	Not specified	8-TSSOP	1.8 ~ 5.5	-40 ~ 85	5	ROHS3
CAV25080YE-GT3	onsemi	8Kbit	20	8-TSSOP	2.5 ~ 5.5	-40 ~ 125	5	ROHS3
M95080-DFDW6TP	STMicroelectronics	8Kbit	20	8-TSSOP	1.7 ~ 5.5	-40 ~ 85	5	ROHS3
M95080-RDW6TP	STMicroelectronics	8Kbit	20	8-TSSOP	1.8 ~ 5.5	-40 ~ 85	5	ROHS3
M95080-WDW6TP	STMicroelectronics	8Kbit	20	8-TSSOP	2.5 ~ 5.5	-40 ~ 85	5	ROHS3

Engineering Selection Recommendations

Direct Replacement (No Layout Changes Required):

25AA080C-I/MS is the primary direct substitute for 25AA080D-I/MS. Both parts are manufactured by Microchip Technology, share identical electrical specifications, and use the same 8-MSOP package. Both maintain ROHS3 compliance and unlimited moisture sensitivity level. This substitution requires no design modifications.

BR25H080FVM-2CTR from Rohm Semiconductor is a pin-compatible alternative in 8-MSOP packaging. This part operates at the same 10 MHz clock frequency and maintains SPI interface compatibility. The voltage supply range is narrower (2.5V minimum versus 1.8V), and the operating temperature extends to 125°C. This part includes AEC-Q100 automotive qualification and is suitable for applications requiring extended temperature operation within the 2.5V to 5.5V supply window.

Functional Equivalents (Layout Modification Required):

AT25080B-XHL-B and AT25080B-XHL-T are Microchip Technology parts with identical memory specifications but operate at 20 MHz clock frequency and use 8-TSSOP packaging. These parts maintain the 1.8V to 5.5V supply range and -40°C to 85°C operating temperature. The 8-TSSOP package has a larger footprint (0.173" width versus 0.118" for MSOP), requiring PCB layout changes. These parts are suitable when higher clock frequency operation is acceptable and PCB redesign is feasible.

M95080-RDW6TP from STMicroelectronics offers the highest inventory availability (33,400 units) among 8-TSSOP alternatives. This part operates at 20 MHz, maintains 1.8V to 5.5V supply compatibility, and is ROHS3 compliant. The 8-TSSOP package requires layout modification.

M95080-WDW6TP is verified for DiGi-Electronics programmability and operates at 20 MHz in 8-TSSOP packaging. The voltage supply range is 2.5V to 5.5V, narrower than the original part.

CAV25080YE-GT3 from onsemi provides 20 MHz operation in 8-TSSOP packaging with AEC-Q100 automotive qualification and extended temperature range to 125°C. The voltage supply minimum is 2.5V.

Frequently Asked Questions (FAQ)

Q: Can I use AT25080B-XHL-T as a direct replacement without PCB modifications?

A: No. The AT25080B-XHL-T uses 8-TSSOP packaging (0.173" width) while the 25AA080D-I/MS uses 8-MSOP packaging (0.118" width). The footprints are incompatible, requiring PCB layout changes. However, the electrical specifications are compatible, and the higher 20 MHz clock frequency provides performance headroom.

Q: What is the minimum voltage requirement difference between 25AA080D-I/MS and BR25H080FVM-2CTR?

A: The 25AA080D-I/MS operates from 1.8V minimum, while BR25H080FVM-2CTR requires 2.5V minimum. If your application uses supply voltages between 1.8V and 2.5V, the BR25H080FVM-2CTR is not suitable. For applications operating at 2.5V or higher, both parts are compatible.

Q: Which substitute offers the best availability?

A: M95080-RDW6TP from STMicroelectronics has the highest inventory at 33,400 units. This part is functionally equivalent with 20 MHz operation, 8-TSSOP packaging, and 1.8V to 5.5V supply compatibility.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance status, matching the original 25AA080D-I/MS specification.

Q: Can I use a 20 MHz part in a circuit designed for 10 MHz operation?

A: Yes. Parts rated for 20 MHz operation are backward compatible with 10 MHz system designs. The higher clock frequency rating provides performance margin and does not create incompatibility. However, verify that your SPI interface controller can operate at the selected clock frequency.

Q: What is the difference between 8-MSOP and 8-TSSOP packages?

A: Both are surface-mount packages with 8 pins, but differ in physical dimensions. 8-MSOP is 0.118" wide (2.80mm to 3.00mm depending on variant), while 8-TSSOP is 0.173" wide (4.40mm). The pin pitch and spacing differ, requiring different PCB footprints. Electrical functionality is identical; the difference is purely mechanical.

Q: Which substitute parts have automotive qualification?

A: BR25H080FVM-2CTR and CAV25080YE-GT3 both carry AEC-Q100 automotive qualification. These parts are suitable for automotive applications requiring extended temperature operation to 125°C.

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