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

Part Overview

The 25AA160DT-E/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 supply voltage range of 1.8V to 5.5V and supports industrial temperature range operation from -40°C to 125°C. The part is currently active in production status with ROHS3 compliance and unlimited moisture sensitivity level rating.

Equivalent and substitute parts are necessary when the primary part number becomes unavailable, when alternative packaging formats are required, or when design specifications allow for compatible alternatives from different manufacturers that meet the same functional and electrical requirements.

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 ~ 125°C
Package Type	8-TSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the 25AA160DT-E/ST is determined by strict alignment with the following core parameters:

Memory capacity: 16Kbit with 2K x 8 organization
Interface protocol: SPI serial communication
Package format: 8-TSSOP surface mount configuration
Write cycle time: 5ms maximum
Supply voltage compatibility: Minimum 1.8V support required
Operating temperature range: Minimum -40°C to 85°C support required
RoHS3 compliance status

Substitute parts must maintain identical memory specifications, SPI interface protocol, and 8-TSSOP package dimensions. Clock frequency variations are permitted when the substitute part operates at equal or higher frequency. Supply voltage ranges may extend beyond the original specification. Operating temperature ranges may be narrower than the original part, provided minimum -40°C and maximum 85°C or higher are supported.

Parameter Comparison

Part Number	Manufacturer	Memory Size	Clock Frequency	Voltage Supply	Operating Temperature	Package	RoHS Status	MSL Rating
25AA160DT-E/ST	Microchip Technology	16Kbit (2K x 8)	10 MHz	1.8V ~ 5.5V	-40°C ~ 125°C	8-TSSOP	ROHS3	1 (Unlimited)
AT25160B-XHL-B	Microchip Technology	16Kbit (2K x 8)	20 MHz	1.8V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	ROHS3	3 (168 Hours)
CAT25160YI-GT3	onsemi	16Kbit (2K x 8)	20 MHz	1.8V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	ROHS3	1 (Unlimited)
CAV25160YE-GT3	onsemi	16Kbit (2K x 8)	20 MHz	2.5V ~ 5.5V	-40°C ~ 125°C	8-TSSOP	ROHS3	1 (Unlimited)
M95160-DFDW6TP	STMicroelectronics	16Kbit (2K x 8)	20 MHz	1.7V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	ROHS3	1 (Unlimited)
M95160-RDW6TP	STMicroelectronics	16Kbit (2K x 8)	10 MHz	1.8V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	ROHS3	1 (Unlimited)
S-25C160A0I-T8T1U3	ABLIC Inc.	16Kbit (2K x 8)	5 MHz	1.6V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	ROHS3	1 (Unlimited)

Engineering Selection Recommendations

All listed substitute parts maintain ROHS3 compliance and active product status. Selection among substitute parts depends on specific application requirements:

AT25160B-XHL-B (Microchip Technology): Maintains identical manufacturer lineage with the primary part. Operates at doubled clock frequency (20 MHz) with equivalent supply voltage range. Operating temperature maximum reduced to 85°C. Moisture sensitivity level rated at 3 (168 hours). Suitable for applications requiring higher speed operation within industrial temperature range not exceeding 85°C.

CAT25160YI-GT3 (onsemi): Provides 20 MHz clock frequency operation with 1.8V to 5.5V supply compatibility. Operating temperature range -40°C to 85°C. Moisture sensitivity level 1 (unlimited). Suitable for general industrial applications requiring higher speed performance.

CAV25160YE-GT3 (onsemi): Automotive-grade part with AEC-Q100 qualification. Maintains -40°C to 125°C operating temperature range matching the primary part. Supply voltage range 2.5V to 5.5V. Moisture sensitivity level 1 (unlimited). Suitable for automotive applications or designs requiring extended temperature range operation.

M95160-DFDW6TP (STMicroelectronics): Operates at 20 MHz with supply voltage range 1.7V to 5.5V. Operating temperature -40°C to 85°C. Moisture sensitivity level 1 (unlimited). Suitable for applications requiring lower minimum supply voltage threshold.

M95160-RDW6TP (STMicroelectronics): Maintains 10 MHz clock frequency identical to the primary part. Supply voltage 1.8V to 5.5V. Operating temperature -40°C to 85°C. Moisture sensitivity level 1 (unlimited). Provides direct functional equivalent with STMicroelectronics manufacturing.

S-25C160A0I-T8T1U3 (ABLIC Inc.): Operates at reduced clock frequency of 5 MHz. Supply voltage range 1.6V to 5.5V with lowest minimum threshold. Operating temperature -40°C to 85°C. Moisture sensitivity level 1 (unlimited). Suitable for low-speed applications or designs requiring extended low-voltage operation.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with a higher clock frequency than the original 25AA160DT-E/ST?

A: Yes. Substitute parts operating at 20 MHz (AT25160B-XHL-B, CAT25160YI-GT3, CAV25160YE-GT3, M95160-DFDW6TP) are compatible with designs specified for 10 MHz operation. Higher frequency capability does not create incompatibility; the device will operate at the speed commanded by the host system.

Q: What is the significance of the operating temperature range difference between the primary part and substitutes?

A: The primary part 25AA160DT-E/ST operates to 125°C maximum. Most substitutes operate to 85°C maximum. If your application requires operation above 85°C, only CAV25160YE-GT3 maintains the full -40°C to 125°C range. Verify your actual operating temperature requirements before selection.

Q: Are all substitute parts available in the same packaging format?

A: Yes. All listed substitute parts use 8-TSSOP surface mount packaging with identical 0.173" width and 4.40mm dimensions. Physical board layout compatibility is maintained across all substitutes.

Q: What does MSL (Moisture Sensitivity Level) rating mean for component selection?

A: MSL rating indicates the maximum time a component can be exposed to moisture before soldering. MSL 1 (unlimited) parts have no time restriction. MSL 3 (168 hours) parts must be soldered within 168 hours of package opening. For high-volume or delayed assembly operations, MSL 1 rated parts (CAT25160YI-GT3, CAV25160YE-GT3, M95160-DFDW6TP, M95160-RDW6TP, S-25C160A0I-T8T1U3) provide greater handling flexibility.

Q: Can I substitute the S-25C160A0I-T8T1U3 if my design uses 10 MHz SPI clock?

A: The S-25C160A0I-T8T1U3 operates at 5 MHz maximum frequency. If your design requires 10 MHz operation, this part is not suitable. Select M95160-RDW6TP or the primary part 25AA160DT-E/ST for 10 MHz compatibility.

Q: Is the CAV25160YE-GT3 suitable for non-automotive applications?

A: Yes. The CAV25160YE-GT3 is automotive-qualified but functionally compatible with all industrial applications. Automotive qualification indicates additional testing and reliability assurance, making it suitable for any application requiring equivalent or higher reliability standards.

Q: What supply voltage range should I verify for my application?

A: The primary part supports 1.8V to 5.5V. Most substitutes maintain this range. The S-25C160A0I-T8T1U3 extends to 1.6V minimum, while CAV25160YE-GT3 requires minimum 2.5V. Verify your power supply design operates within the selected part's specified voltage range.

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