Equivalent & Substitute Parts for 25LC160C-I/ST

Part Overview

The 25LC160C-I/ST is a 16Kbit EEPROM memory IC manufactured by Microchip Technology, featuring SPI interface with 10 MHz clock frequency in 8-TSSOP surface mount packaging. This non-volatile memory device operates across a 2.5V to 5.5V supply range with industrial temperature rating (-40°C to 85°C). The part is Active status and ROHS3 compliant. Equivalent and substitute parts are identified to support design flexibility, inventory optimization, and supply chain continuity.

Key Parameters

Parameter	Value
Memory Type	Non-Volatile EEPROM
Memory Size	16Kbit
Memory Organization	2K x 8
Interface	SPI
Clock Frequency	10 MHz
Write Cycle Time	5ms
Supply Voltage	2.5V ~ 5.5V
Operating Temperature	-40°C ~ 85°C
Package	8-TSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the 25LC160C-I/ST is determined by the following critical parameters: 16Kbit memory capacity, 2K x 8 organization, SPI interface, 8-TSSOP package, and surface mount mounting type. These parameters define the functional and physical compatibility baseline.

Substitute parts are grouped into three categories based on operational differences:

Category 1: Direct Functional Equivalents (10 MHz SPI) Parts maintaining 10 MHz clock frequency with identical supply voltage range (2.5V ~ 5.5V) and industrial temperature rating (-40°C ~ 85°C). These include 25LC160A-I/ST, 25LC160B-I/ST, and 25LC160D-I/ST from Microchip Technology.

Category 2: Enhanced Performance Substitutes (20 MHz SPI) Parts with increased clock frequency (20 MHz) while maintaining core memory specifications. These include AT25160B-XHL-B (Microchip), CAT25160YI-GT3 (onsemi), and M95160 series (STMicroelectronics). These parts support higher data throughput and are backward compatible in SPI-based designs.

Category 3: Extended Temperature & Automotive Grade Parts qualified for extended operating ranges or automotive applications. CAV25160YE-GT3 (onsemi) supports -40°C ~ 125°C and carries AEC-Q100 qualification. M95160-DRDW8TP/K (STMicroelectronics) extends to -40°C ~ 105°C with automotive grade and AEC-Q100 qualification.

Parameter Comparison

Part Number	Manufacturer	Memory Size	Clock Frequency	Supply Voltage	Operating Temperature	Package	Write Cycle Time	MSL Rating
25LC160C-I/ST	Microchip	16Kbit	10 MHz	2.5V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	5ms	1
25AA160C-I/ST	Microchip	16Kbit	10 MHz	1.8V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	5ms	1
25LC160A-I/ST	Microchip	16Kbit	10 MHz	2.5V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	5ms	1
25LC160A-E/ST	Microchip	16Kbit	10 MHz	2.5V ~ 5.5V	-40°C ~ 125°C	8-TSSOP	5ms	1
25LC160B-I/ST	Microchip	16Kbit	10 MHz	2.5V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	5ms	1
25LC160D-I/ST	Microchip	16Kbit	10 MHz	2.5V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	5ms	1
AT25160B-XHL-B	Microchip	16Kbit	20 MHz	1.8V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	5ms	1
CAT25160YI-GT3	onsemi	16Kbit	20 MHz	1.8V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	5ms	1
CAV25160YE-GT3	onsemi	16Kbit	20 MHz	2.5V ~ 5.5V	-40°C ~ 125°C	8-TSSOP	5ms	1
M95160-DFDW6TP	STMicroelectronics	16Kbit	20 MHz	1.7V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	5ms	1
M95160-DRDW8TP/K	STMicroelectronics	16Kbit	20 MHz	1.8V ~ 5.5V	-40°C ~ 105°C	8-TSSOP	4ms	1

Engineering Selection Recommendations

For Direct Replacement (10 MHz SPI, Industrial Temperature) Select 25LC160A-I/ST, 25LC160B-I/ST, or 25LC160D-I/ST when maintaining identical electrical and thermal specifications is required. All three are Microchip Technology products with Active status, ROHS3 compliance, and MSL 1 rating, ensuring compatibility with existing designs without modification.

For Extended Temperature Operation Select 25LC160A-E/ST for extended upper temperature limit (-40°C ~ 125°C) while maintaining 10 MHz SPI operation and 2.5V ~ 5.5V supply range. This part is suitable for industrial applications requiring higher thermal margins.

For Higher Clock Frequency Applications Select AT25160B-XHL-B, CAT25160YI-GT3, or M95160 series when 20 MHz SPI operation is required. These parts support faster data transfer rates while maintaining 16Kbit capacity and 8-TSSOP packaging. All are Active status and ROHS3 compliant.

For Automotive Grade Applications Select CAV25160YE-GT3 (onsemi, AEC-Q100 qualified, -40°C ~ 125°C) or M95160-DRDW8TP/K (STMicroelectronics, AEC-Q100 qualified, -40°C ~ 105°C) for automotive-grade designs. Both parts carry formal automotive qualification and extended temperature ratings.

For Low Voltage Applications Select 25AA160C-I/ST (1.8V ~ 5.5V), AT25160B-XHL-B (1.8V ~ 5.5V), CAT25160YI-GT3 (1.8V ~ 5.5V), or M95160-DFDW6TP (1.7V ~ 5.5V) when designs require operation below 2.5V supply voltage.

Frequently Asked Questions (FAQ)

Q: Can 25LC160A-I/ST directly replace 25LC160C-I/ST? A: Yes. Both parts share identical electrical specifications: 16Kbit capacity, 2K x 8 organization, 10 MHz SPI interface, 2.5V ~ 5.5V supply range, -40°C ~ 85°C operating temperature, and 8-TSSOP packaging. No design modifications are required.

Q: What is the difference between 10 MHz and 20 MHz clock frequency substitutes? A: 20 MHz parts (AT25160B-XHL-B, CAT25160YI-GT3, M95160 series) support twice the data throughput compared to 10 MHz parts. They are backward compatible in SPI-based designs and can operate at reduced clock frequencies if required. Select 20 MHz parts when higher data transfer rates are needed.

Q: Can I use a 20 MHz substitute in a design specified for 10 MHz? A: Yes. 20 MHz parts are backward compatible and can operate at 10 MHz or lower clock frequencies. No design changes are necessary. The higher clock frequency capability provides additional performance margin.

Q: What does AEC-Q100 qualification mean? A: AEC-Q100 is an automotive industry standard qualification indicating the part meets automotive reliability and quality requirements. CAV25160YE-GT3 and M95160-DRDW8TP/K carry this qualification for automotive applications.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitute parts are ROHS3 compliant, matching the compliance status of the 25LC160C-I/ST.

Q: What is MSL 1 rating? A: MSL (Moisture Sensitivity Level) 1 indicates unlimited shelf life without moisture baking requirements. All listed parts carry MSL 1 rating, providing maximum storage flexibility.

Q: Can I substitute a part with extended temperature rating (-40°C ~ 125°C) in a design specified for -40°C ~ 85°C? A: Yes. Extended temperature parts (25LC160A-E/ST, CAV25160YE-GT3) are fully compatible in designs with lower temperature requirements. They provide additional thermal margin and reliability.

Q: What is the difference between Microchip, onsemi, and STMicroelectronics versions? A: All three manufacturers produce functionally equivalent 16Kbit SPI EEPROM devices in 8-TSSOP packaging. Selection depends on supply availability, pricing, and specific application requirements (automotive grade, extended temperature, etc.). All are Active status products with ROHS3 compliance.

Q: Is the 8-TSSOP package identical across all substitute parts? A: Yes. All substitute parts use 8-TSSOP (0.173", 4.40mm Width) packaging, ensuring identical PCB footprint and mechanical compatibility.

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