25LC080CT-E/ST16KVAO EEPROM Memory IC Equivalent & Substitute Parts

Part Overview

The 25LC080CT-E/ST16KVAO is an 8Kbit SPI EEPROM memory IC manufactured by Microchip Technology, packaged in 8-TSSOP surface mount configuration. This non-volatile memory device operates at 10 MHz clock frequency with a supply voltage range of 2.5V to 5.5V and is qualified to AEC-Q100 automotive standards. The device is currently in active production status with 1,172 units in stock inventory.

Equivalent and substitute parts are necessary when the primary part becomes unavailable, when alternative manufacturers' components offer improved specifications, or when design flexibility requires selection from multiple qualified sources while maintaining 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	2.5V ~ 5.5V
Operating Temperature	-40°C ~ 125°C
Package Type	8-TSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount
Grade	Automotive
Qualification	AEC-Q100
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the 25LC080CT-E/ST16KVAO is determined by the following critical parameters:

Core Compatibility Requirements:

Memory Size: 8Kbit (mandatory match)
Memory Organization: 1K x 8 (mandatory match)
Memory Interface: SPI (mandatory match)
Package Type: 8-TSSOP (mandatory match)
Mounting Type: Surface Mount (mandatory match)

Allowable Parameter Variations:

Clock Frequency: Equal to or greater than 10 MHz
Write Cycle Time: Equal to or less than 5ms
Voltage Supply Range: Must encompass or exceed 2.5V ~ 5.5V
Operating Temperature: Must support -40°C minimum and 125°C maximum
Automotive Grade and AEC-Q100 qualification are preferred but not mandatory for industrial applications

All substitute parts listed meet the core compatibility requirements. Variations in clock frequency, voltage range, and temperature specifications represent enhanced or equivalent performance characteristics.

Parameter Comparison

Part Number	Manufacturer	Memory Size	Clock Frequency (MHz)	Voltage Supply (V)	Operating Temp (°C)	Package	Automotive Grade	AEC-Q100
25LC080CT-E/ST16KVAO	Microchip Technology	8Kbit	10	2.5 ~ 5.5	-40 ~ 125	8-TSSOP	Yes	Yes
AT25080B-XHL-B	Microchip Technology	8Kbit	20	1.8 ~ 5.5	-40 ~ 85	8-TSSOP	No	No
AT25080B-XHL-T	Microchip Technology	8Kbit	20	1.8 ~ 5.5	-40 ~ 85	8-TSSOP	No	No
CAT25080YI-GT3	onsemi	8Kbit	Not specified	1.8 ~ 5.5	-40 ~ 85	8-TSSOP	No	No
CAV25080YE-GT3	onsemi	8Kbit	20	2.5 ~ 5.5	-40 ~ 125	8-TSSOP	Yes	Yes
M95080-DFDW6TP	STMicroelectronics	8Kbit	20	1.7 ~ 5.5	-40 ~ 85	8-TSSOP	No	No
M95080-RDW6TP	STMicroelectronics	8Kbit	20	1.8 ~ 5.5	-40 ~ 85	8-TSSOP	No	No
M95080-WDW6TP	STMicroelectronics	8Kbit	20	2.5 ~ 5.5	-40 ~ 85	8-TSSOP	No	No

Engineering Selection Recommendations

For Automotive Applications with Full Temperature Range Requirements: CAV25080YE-GT3 (onsemi) is the direct equivalent substitute. This part maintains AEC-Q100 qualification and automotive grade status identical to the primary part, supports the full -40°C to 125°C operating temperature range, and provides enhanced clock frequency performance at 20 MHz while maintaining the 2.5V to 5.5V supply voltage specification.

For Industrial Applications with Standard Temperature Range: M95080-WDW6TP (STMicroelectronics) offers functional substitution with verified DiGi-Electronics programmability status. This part operates within the -40°C to 85°C range and maintains 2.5V to 5.5V supply voltage compatibility. Higher inventory availability (10,093 units) supports supply chain continuity.

For Extended Supply Voltage Flexibility: M95080-DFDW6TP (STMicroelectronics) provides the lowest minimum supply voltage at 1.7V, enabling operation in low-power applications while maintaining 8Kbit capacity and SPI interface compatibility.

For Microchip Technology Ecosystem Preference: AT25080B-XHL-T (Microchip Technology) maintains manufacturer consistency with enhanced 20 MHz clock frequency and extended inventory (6,854 units). Operating temperature range is limited to -40°C to 85°C.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with a higher clock frequency than the original 25LC080CT-E/ST16KVAO?

A: Yes. A substitute part with equal or greater clock frequency (such as 20 MHz variants) is functionally compatible. The higher frequency specification indicates enhanced performance capability and does not create incompatibility with designs specified for 10 MHz operation.

Q: What is the significance of the 8-TSSOP package specification?

A: The 8-TSSOP (Thin Shrink Small Outline Package) with 0.173" width and 4.40mm width is a standardized surface mount package. All listed substitute parts use identical package geometry, ensuring direct PCB footprint compatibility and eliminating layout redesign requirements.

Q: Are the AT25080B variants suitable for automotive applications?

A: The AT25080B-XHL-B and AT25080B-XHL-T variants do not carry automotive grade designation or AEC-Q100 qualification. These parts are suitable for industrial and commercial applications but should not be used in automotive designs requiring qualification compliance.

Q: How does the operating temperature range affect substitution decisions?

A: The primary part operates from -40°C to 125°C. Substitute parts with -40°C to 85°C range are suitable for applications not requiring the extended upper temperature specification. For designs requiring full -40°C to 125°C operation, only CAV25080YE-GT3 maintains this specification.

Q: What does AEC-Q100 qualification mean for component selection?

A: AEC-Q100 is an automotive electronics qualification standard. Only the primary part (25LC080CT-E/ST16KVAO) and CAV25080YE-GT3 carry this qualification. For automotive applications, these two parts are the qualified options.

Q: Can I substitute based on voltage supply range alone?

A: No. Voltage supply range is one of multiple parameters determining substitution eligibility. All substitute parts must match the core requirements: 8Kbit memory size, 1K x 8 organization, SPI interface, and 8-TSSOP package. Voltage range variation is allowable only when all core parameters align.

Q: What is the difference between Cut Tape (CT) and Tape & Reel (TR) packaging?

A: Cut Tape and Digi-Reel packaging are supply format variations for the same component. Both formats contain identical electronic components in the same 8-TSSOP package. The difference is in quantity per reel and handling format for automated assembly equipment. Component functionality is identical.

Q: Is the M95080-WDW6TP verified for DiGi-Electronics programmability?

A: Yes. M95080-WDW6TP is marked as "Verified" for DiGi-Electronics programmability, indicating compatibility with specific programming equipment and processes. Other substitute parts show "Not Verified" status, which does not indicate incompatibility but rather indicates unconfirmed status with this specific programming platform.

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