25LC160D-E/ST EEPROM Memory IC Equivalent & Substitute Parts

Part Overview

The 25LC160D-E/ST is a 16Kbit Serial Peripheral Interface (SPI) EEPROM memory IC manufactured by Microchip Technology in an 8-TSSOP surface mount package. This non-volatile memory device operates at 10 MHz clock frequency with a 2.5V to 5.5V supply voltage range and supports operating temperatures from -40°C to 125°C. The part is currently in active production status with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Equivalent and substitute parts are identified when they maintain identical memory capacity, organization, interface protocol, package form factor, and compatible electrical specifications within acceptable operational parameters.

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	2.5V ~ 5.5V
Operating Temperature	-40°C ~ 125°C
Package / Case	8-TSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the 25LC160D-E/ST are qualified based on the following mandatory criteria:

Memory capacity: 16Kbit (2K x 8 organization)
Interface protocol: SPI
Package type: 8-TSSOP with 0.173" width and 4.40mm dimensions
Write cycle time: 5ms
Surface mount technology
ROHS3 compliance

Substitutes are grouped into two categories based on operational parameter compatibility:

Category A - Full Parameter Compatibility: Parts maintaining the original 10 MHz clock frequency, 2.5V to 5.5V supply voltage range, and -40°C to 125°C operating temperature.

Category B - Extended Performance Capability: Parts with higher clock frequency (20 MHz) or modified voltage/temperature ranges that remain functionally compatible within the 25LC160D-E/ST's operational envelope.

Parameter Comparison

Part Number	Manufacturer	Memory Size	Clock Frequency	Voltage Supply	Operating Temperature	Write Cycle Time	Package	MSL Rating
25LC160D-E/ST	Microchip Technology	16Kbit (2K x 8)	10 MHz	2.5V ~ 5.5V	-40°C ~ 125°C	5ms	8-TSSOP	1 (Unlimited)
25LC160A-E/ST	Microchip Technology	16Kbit (2K x 8)	10 MHz	2.5V ~ 5.5V	-40°C ~ 125°C	5ms	8-TSSOP	1 (Unlimited)
AT25160B-XHL-B	Microchip Technology	16Kbit (2K x 8)	20 MHz	1.8V ~ 5.5V	-40°C ~ 85°C	5ms	8-TSSOP	3 (168 Hours)
CAT25160YI-GT3	onsemi	16Kbit (2K x 8)	20 MHz	1.8V ~ 5.5V	-40°C ~ 85°C	5ms	8-TSSOP	1 (Unlimited)
CAV25160YE-GT3	onsemi	16Kbit (2K x 8)	20 MHz	2.5V ~ 5.5V	-40°C ~ 125°C	5ms	8-TSSOP	1 (Unlimited)
M95160-RDW6TP	STMicroelectronics	16Kbit (2K x 8)	10 MHz	1.8V ~ 5.5V	-40°C ~ 85°C	5ms	8-TSSOP	1 (Unlimited)
S-25C160A0I-T8T1U3	ABLIC Inc.	16Kbit (2K x 8)	5 MHz	1.6V ~ 5.5V	-40°C ~ 85°C	5ms	8-TSSOP	1 (Unlimited)

Engineering Selection Recommendations

25LC160A-E/ST (Microchip Technology): Direct equivalent with identical electrical and thermal specifications. Recommended as primary substitute for applications requiring no design modification. Active production status with ROHS3 compliance and unlimited MSL rating.

CAV25160YE-GT3 (onsemi): Functionally compatible substitute with automotive-grade qualification (AEC-Q100) and matching temperature range (-40°C to 125°C). Suitable for applications requiring automotive-level reliability. Higher clock frequency (20 MHz) provides performance headroom. Active production status with ROHS3 compliance.

AT25160B-XHL-B (Microchip Technology): Compatible substitute with extended clock frequency (20 MHz). Operating temperature range limited to -40°C to 85°C. Moisture sensitivity level 3 requires controlled storage conditions (168 hours maximum). Suitable for standard industrial applications not requiring full -40°C to 125°C range.

CAT25160YI-GT3 (onsemi): Compatible substitute with 20 MHz clock frequency and 1.8V minimum supply voltage. Operating temperature range -40°C to 85°C. Unlimited MSL rating. Suitable for low-power applications and standard industrial environments.

M95160-RDW6TP (STMicroelectronics): Compatible substitute with 10 MHz clock frequency matching the original part. Extended lower voltage limit (1.8V minimum). Operating temperature range -40°C to 85°C. Unlimited MSL rating. Suitable for low-power and industrial applications.

S-25C160A0I-T8T1U3 (ABLIC Inc.): Compatible substitute with reduced clock frequency (5 MHz). Extended lower voltage limit (1.6V minimum). Operating temperature range -40°C to 85°C. Suitable for low-speed, low-power applications. Verify timing requirements before selection.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with higher clock frequency (20 MHz) in place of the 25LC160D-E/ST (10 MHz)?

A: Yes. Higher clock frequency parts (AT25160B-XHL-B, CAT25160YI-GT3, CAV25160YE-GT3) are backward compatible with 10 MHz designs. The SPI interface operates at the speed commanded by the host controller, so a 20 MHz capable device functions correctly in 10 MHz applications.

Q: What is the significance of the MSL (Moisture Sensitivity Level) rating difference?

A: MSL 1 (Unlimited) parts have no moisture absorption restrictions and can be stored indefinitely before reflow soldering. MSL 3 (168 Hours) parts like AT25160B-XHL-B must be reflowed within 168 hours of package opening or require baking to remove absorbed moisture. For high-volume production or extended storage, MSL 1 rated parts are preferred.

Q: Are the 25LC160A-E/ST and 25LC160D-E/ST interchangeable?

A: Yes. Both parts are Microchip Technology EEPROM devices with identical memory capacity (16Kbit), organization (2K x 8), interface (SPI), clock frequency (10 MHz), voltage range (2.5V to 5.5V), temperature range (-40°C to 125°C), package (8-TSSOP), and write cycle time (5ms). The 25LC160A-E/ST is a direct equivalent.

Q: Can I use S-25C160A0I-T8T1U3 (5 MHz) in a design requiring 10 MHz operation?

A: No. The S-25C160A0I-T8T1U3 operates at maximum 5 MHz clock frequency. Using it in a 10 MHz design will result in timing violations and data corruption. Verify the actual clock frequency requirement of your application before selecting this part.

Q: What are the key differences between CAV25160YE-GT3 and CAT25160YI-GT3?

A: Both are onsemi 16Kbit SPI EEPROM devices in 8-TSSOP packages with 20 MHz clock frequency. CAV25160YE-GT3 includes automotive-grade qualification (AEC-Q100) and supports the full -40°C to 125°C temperature range with 2.5V to 5.5V supply voltage. CAT25160YI-GT3 operates at -40°C to 85°C with 1.8V to 5.5V supply voltage. Select CAV25160YE-GT3 for automotive applications or designs requiring extended temperature range.

Q: Is the 8-TSSOP package identical across all substitute parts?

A: Yes. All substitute parts use the 8-TSSOP package with 0.173" width and 4.40mm dimensions, ensuring identical PCB footprint and land pattern compatibility. No layout modifications are required when substituting between these parts.

Q: Can I substitute M95160-RDW6TP for the 25LC160D-E/ST in a -40°C to 125°C application?

A: No. The M95160-RDW6TP operates at maximum 85°C. For applications requiring the full -40°C to 125°C temperature range, use 25LC160A-E/ST, 25LC160D-E/ST, or CAV25160YE-GT3.

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