25AA160DT-I/ST EEPROM Memory IC Equivalent & Substitute Parts

Part Overview

The 25AA160DT-I/ST is a 16Kbit Serial Peripheral Interface (SPI) EEPROM memory IC manufactured by Microchip Technology in 8-TSSOP surface mount packaging. This non-volatile memory device operates at 10 MHz clock frequency with a 5ms write cycle time and supports supply voltages from 1.8V to 5.5V across an operating temperature range of -40°C to 85°C. The device is ROHS3 compliant with MSL 1 rating and maintains active product status. Equivalent and substitute parts are identified based on matching core electrical parameters, package specifications, and functional compatibility within the 16Kbit SPI EEPROM category.

Key Parameters

Parameter	Value
Memory Size	16Kbit
Memory Organization	2K 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-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 25AA160DT-I/ST is determined by the following critical parameters:

Core Functional Requirements:

Memory capacity: 16Kbit
Memory organization: 2K x 8
Interface protocol: SPI
Package: 8-TSSOP surface mount

Electrical Compatibility:

Supply voltage range must encompass or be compatible with 1.8V ~ 5.5V
Operating temperature range: -40°C to 85°C minimum
Write cycle time: 5ms or faster
Clock frequency: 10 MHz or higher

Compliance & Reliability:

RoHS3 compliance required
MSL rating of 1 or 3 acceptable for standard applications
Active product status preferred

Substitute parts are grouped into two categories: direct equivalents matching all parameters, and compatible alternatives with enhanced specifications (higher clock frequency, extended temperature range, or automotive qualification) that maintain backward compatibility.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Clock Frequency	Write Cycle Time	Voltage Supply	Operating Temperature	MSL Rating	Packaging	Grade
25AA160DT-I/ST	Microchip Technology	10 MHz	5ms	1.8V ~ 5.5V	-40°C ~ 85°C	1	Tape & Reel	Standard
AT25160B-XHL-B	Microchip Technology	20 MHz	5ms	1.8V ~ 5.5V	-40°C ~ 85°C	3	Tube	Standard
CAT25160YI-GT3	onsemi	20 MHz	5ms	1.8V ~ 5.5V	-40°C ~ 85°C	1	Tape & Reel	Standard
CAV25160YE-GT3	onsemi	20 MHz	5ms	2.5V ~ 5.5V	-40°C ~ 125°C	1	Tape & Reel	Automotive (AEC-Q100)
M95160-DFDW6TP	STMicroelectronics	20 MHz	5ms	1.7V ~ 5.5V	-40°C ~ 85°C	1	Tape & Reel	Standard
M95160-DRDW8TP/K	STMicroelectronics	20 MHz	4ms	1.8V ~ 5.5V	-40°C ~ 105°C	1	Tape & Reel	Automotive (AEC-Q100)
M95160-RDW6TP	STMicroelectronics	10 MHz	5ms	1.8V ~ 5.5V	-40°C ~ 85°C	1	Cut Tape & Digi-Reel	Standard
R1EX25016ATA00I#S0	Renesas Electronics Corporation	5 MHz	5ms	1.8V ~ 5.5V	-40°C ~ 85°C	1	Tape & Reel	Standard
S-25C160A0I-T8T1U3	ABLIC Inc.	5 MHz	5ms	1.6V ~ 5.5V	-40°C ~ 85°C	1	Cut Tape	Standard

Engineering Selection Recommendations

Direct Equivalent (Identical Specifications): M95160-RDW6TP from STMicroelectronics matches the 25AA160DT-I/ST across all critical parameters: 10 MHz clock frequency, 5ms write cycle time, 1.8V to 5.5V supply range, -40°C to 85°C operating temperature, and MSL 1 rating. This part is available in higher volume (53,400 pcs) and maintains ROHS3 compliance.

Enhanced Performance Substitutes (Higher Clock Frequency): AT25160B-XHL-B, CAT25160YI-GT3, M95160-DFDW6TP, and M95160-DRDW8TP/K operate at 20 MHz, providing doubled clock frequency while maintaining or improving other electrical parameters. These parts are backward compatible in applications where the original 10 MHz specification is not a hard requirement. CAT25160YI-GT3 offers MSL 1 rating identical to the original part.

Automotive-Grade Alternatives: CAV25160YE-GT3 and M95160-DRDW8TP/K carry AEC-Q100 automotive qualification with extended operating temperature ranges (-40°C to 125°C). These are suitable for applications requiring automotive-grade components. Note that CAV25160YE-GT3 has a reduced minimum supply voltage of 2.5V.

Lower Clock Frequency Options: R1EX25016ATA00I#S0 and S-25C160A0I-T8T1U3 operate at 5 MHz, half the original specification. These are suitable only for applications with reduced speed requirements and should be verified for timing compatibility before selection.

Packaging Considerations: M95160-RDW6TP is supplied in Cut Tape & Digi-Reel format, while most alternatives use standard Tape & Reel or Tube packaging. AT25160B-XHL-B is supplied in Tube format. Verify packaging compatibility with assembly processes.

Frequently Asked Questions (FAQ)

Q: Can I use a 20 MHz substitute in place of the 10 MHz 25AA160DT-I/ST? A: Yes. Higher clock frequency parts (AT25160B-XHL-B, CAT25160YI-GT3, M95160-DFDW6TP, M95160-DRDW8TP/K) are backward compatible. The SPI interface operates at the speed commanded by the host controller, so a 20 MHz capable device functions correctly in 10 MHz applications. Verify host controller compatibility with the substitute manufacturer's device.

Q: What is the difference between standard and automotive-grade parts? A: Automotive-grade parts (CAV25160YE-GT3, M95160-DRDW8TP/K) carry AEC-Q100 qualification, indicating compliance with automotive reliability and testing standards. These parts typically have extended operating temperature ranges and stricter quality control. Use automotive-grade parts only when explicitly required by application specifications.

Q: Are all substitutes ROHS3 compliant? A: Yes. All listed substitute parts maintain ROHS3 compliance status, matching the original 25AA160DT-I/ST specification.

Q: What does MSL 1 versus MSL 3 mean for my application? A: MSL (Moisture Sensitivity Level) 1 indicates unlimited shelf life without moisture control. MSL 3 requires storage in controlled humidity conditions (168 hours maximum exposure at 85°C/85% RH before reflow). For standard applications with standard storage practices, MSL 1 parts are preferred. AT25160B-XHL-B carries MSL 3 rating and requires moisture control during storage and handling.

Q: Can I substitute a 5 MHz part for the original 10 MHz device? A: Only if your application does not require 10 MHz operation. R1EX25016ATA00I#S0 and S-25C160A0I-T8T1U3 operate at 5 MHz and are suitable for reduced-speed applications. Verify that your host controller and application timing requirements are compatible with 5 MHz operation before selection.

Q: What is the minimum supply voltage for each substitute? A: Most substitutes support 1.8V minimum supply voltage, matching the original part. S-25C160A0I-T8T1U3 supports 1.6V minimum, and M95160-DFDW6TP supports 1.7V minimum. CAV25160YE-GT3 has a higher minimum of 2.5V. Verify your application's minimum supply voltage requirement before selection.

Q: Are there differences in write cycle time between substitutes? A: Most substitutes maintain the 5ms write cycle time. M95160-DRDW8TP/K offers an improved 4ms write cycle time. This faster write performance is backward compatible and does not affect applications designed for 5ms operation.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message