Equivalent & Substitute Parts for 25LC080A-I/STG

Part Overview

The 25LC080A-I/STG is an 8Kbit EEPROM memory IC manufactured by Microchip Technology, featuring SPI interface operation at 10 MHz with 8-TSSOP surface mount packaging. This part is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and production continuity. The device operates across a supply voltage range of 2.5V to 5.5V with industrial temperature specifications from -40°C to 85°C.

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 ~ 85°C
Package Type	8-TSSOP
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the 25LC080A-I/STG is determined by strict equivalence across the following critical parameters: 8Kbit memory capacity, 1K x 8 organization, SPI interface protocol, 10 MHz clock frequency, 5ms write cycle time, 8-TSSOP package geometry, and ROHS3 compliance. Substitute parts are grouped into two categories based on voltage supply range compatibility:

Category 1: Direct Voltage Range Match (2.5V ~ 5.5V) Parts maintaining identical supply voltage specifications to the main part: 25LC080C-I/ST, 25LC080A-E/ST, 25LC080A-I/ST, 25LC080B-E/ST, 25LC080B-I/ST, 25LC080C-E/ST.

Category 2: Extended Lower Voltage Support (1.8V ~ 5.5V) Parts offering broader voltage compatibility with lower minimum threshold: 25AA080A-I/ST, 25AA080BT-I/ST, 25AA080C-I/ST, 25AA080D-I/ST.

Temperature range variations exist within substitute options, with some parts rated to -40°C ~ 125°C versus the original -40°C ~ 85°C specification.

Parameter Comparison

Part Number	Manufacturer	Memory Size	Memory Interface	Clock Frequency	Voltage Supply	Operating Temperature	Package	Product Status
25LC080A-I/STG	Microchip Technology	8Kbit	SPI	10 MHz	2.5V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Obsolete
25LC080C-I/ST	Microchip Technology	8Kbit	SPI	10 MHz	2.5V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Active
25AA080A-I/ST	Microchip Technology	8Kbit	SPI	10 MHz	1.8V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Active
25AA080BT-I/ST	Microchip Technology	8Kbit	SPI	10 MHz	1.8V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Active
25AA080C-I/ST	Microchip Technology	8Kbit	SPI	10 MHz	1.8V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Active
25AA080D-I/ST	Microchip Technology	8Kbit	SPI	10 MHz	1.8V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Active
25LC080A-E/ST	Microchip Technology	8Kbit	SPI	10 MHz	2.5V ~ 5.5V	-40°C ~ 125°C	8-TSSOP	Active
25LC080A-I/ST	Microchip Technology	8Kbit	SPI	10 MHz	2.5V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Active
25LC080B-E/ST	Microchip Technology	8Kbit	SPI	10 MHz	2.5V ~ 5.5V	-40°C ~ 125°C	8-TSSOP	Active
25LC080B-I/ST	Microchip Technology	8Kbit	SPI	10 MHz	2.5V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Active
25LC080C-E/ST	Microchip Technology	8Kbit	SPI	10 MHz	2.5V ~ 5.5V	-40°C ~ 125°C	8-TSSOP	Active

Engineering Selection Recommendations

For applications requiring direct replacement of the obsolete 25LC080A-I/STG with identical electrical and thermal specifications, 25LC080A-I/ST is the primary selection, offering active product status and matching voltage supply range of 2.5V to 5.5V with identical operating temperature range.

For designs operating at lower supply voltages below 2.5V, the 25AA080 series (25AA080A-I/ST, 25AA080BT-I/ST, 25AA080C-I/ST, 25AA080D-I/ST) provides extended voltage support down to 1.8V while maintaining all other electrical parameters. These parts are active and ROHS3 compliant.

For applications requiring extended temperature operation to 125°C, 25LC080A-E/ST, 25LC080B-E/ST, and 25LC080C-E/ST are available with identical voltage specifications and active product status.

All substitute parts maintain ROHS3 compliance, MSL rating of 1 (Unlimited), and REACH unaffected status, ensuring regulatory alignment with the original part.

Frequently Asked Questions (FAQ)

Q: Can 25AA080 series parts replace 25LC080A-I/STG in all applications? A: 25AA080 series parts are electrically compatible for all SPI interface, memory capacity, and clock frequency requirements. The primary difference is extended lower voltage support (1.8V minimum versus 2.5V). Substitution is valid only if your application operates within the 1.8V to 5.5V range or if lower voltage capability is beneficial.

Q: What is the difference between 25LC080 and 25AA080 part families? A: Both families provide identical 8Kbit SPI EEPROM functionality in 8-TSSOP packaging. The 25LC080 series operates from 2.5V to 5.5V, while 25AA080 series extends lower voltage support to 1.8V. Selection depends on your system's minimum supply voltage requirement.

Q: Are there temperature rating differences among substitute parts? A: Yes. The original 25LC080A-I/STG and most active substitutes operate from -40°C to 85°C. Parts designated with "-E" suffix (25LC080A-E/ST, 25LC080B-E/ST, 25LC080C-E/ST) extend the upper temperature limit to 125°C. Select the extended temperature variant only if your application requires operation above 85°C.

Q: Does packaging differ between substitute parts? A: All listed substitute parts use identical 8-TSSOP surface mount packaging with 0.173" width and 4.40mm dimensions. Packaging is not a differentiation factor for substitution eligibility.

Q: What is the inventory status for substitute parts? A: 25LC080A-I/ST maintains the highest inventory at 10,095 pieces. 25AA080C-I/ST provides 3,205 pieces. Other active substitutes range from 698 to 2,560 pieces in stock. Verify current availability with your supplier for production requirements.

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