Equivalent & Substitute Parts for 25LC160B-I/ST

Part Overview

The 25LC160B-I/ST is a 16Kbit EEPROM memory IC manufactured by Microchip Technology, featuring SPI interface with 10 MHz clock frequency in an 8-TSSOP surface mount package. This non-volatile memory device operates across a 2.5V to 5.5V supply range and supports industrial temperature specifications from -40°C to 85°C. The part is ROHS3 compliant and currently in active production status with 1565 units in stock.

Equivalent and substitute parts are identified based on functional compatibility within the 16Kbit EEPROM SPI memory category. Substitutes maintain identical memory capacity, organization, interface protocol, and package form factor while accommodating variations in electrical specifications, operating temperature ranges, and manufacturer implementations.

Key Parameters

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

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following criteria:

Primary Compatibility Requirements:

Memory capacity: 16Kbit (2K x 8 organization)
Interface protocol: SPI
Package: 8-TSSOP surface mount
Electrical interface: Compatible voltage and timing specifications

Substitution Categories:

Direct Substitutes (Identical Specifications): Parts that match all key parameters of the 25LC160B-I/ST, including 10 MHz clock frequency, 2.5V–5.5V supply range, and -40°C to 85°C operating temperature.

Extended Supply Range Substitutes: Parts with lower minimum supply voltage (1.8V) that maintain 2.5V–5.5V compatibility, allowing operation in wider power supply environments while remaining compatible with 2.5V–5.5V systems.

Extended Temperature Range Substitutes: Parts rated to -40°C to 125°C that exceed the base -40°C to 85°C specification, suitable for applications requiring enhanced thermal performance.

Higher Clock Frequency Substitutes: Parts with 20 MHz clock frequency that provide enhanced performance while maintaining backward compatibility with 10 MHz SPI bus speeds through downward frequency compatibility.

Automotive Grade Substitutes: Parts qualified to AEC-Q100 automotive standards with extended temperature ranges (-40°C to 125°C), suitable for automotive and high-reliability applications.

Parameter Comparison

Part Number	Manufacturer	Memory Size	Clock Frequency	Supply Voltage	Operating Temperature	Write Cycle Time	Package	Inventory
25LC160B-I/ST	Microchip Technology	16Kbit	10 MHz	2.5V ~ 5.5V	-40°C ~ 85°C	5ms	8-TSSOP	1565
25LC160D-I/ST	Microchip Technology	16Kbit	10 MHz	2.5V ~ 5.5V	-40°C ~ 85°C	5ms	8-TSSOP	1401
25AA160C-I/ST	Microchip Technology	16Kbit	10 MHz	1.8V ~ 5.5V	-40°C ~ 85°C	5ms	8-TSSOP	1564
25LC160A-E/ST	Microchip Technology	16Kbit	10 MHz	2.5V ~ 5.5V	-40°C ~ 125°C	5ms	8-TSSOP	898
25LC160A-I/ST	Microchip Technology	16Kbit	10 MHz	2.5V ~ 5.5V	-40°C ~ 85°C	5ms	8-TSSOP	1289
AT25160B-XHL-B	Microchip Technology	16Kbit	20 MHz	1.8V ~ 5.5V	-40°C ~ 85°C	5ms	8-TSSOP	4300
CAT25160YI-GT3	onsemi	16Kbit	20 MHz	1.8V ~ 5.5V	-40°C ~ 85°C	5ms	8-TSSOP	3090
CAV25160YE-GT3	onsemi	16Kbit	20 MHz	2.5V ~ 5.5V	-40°C ~ 125°C	5ms	8-TSSOP	1552
M95160-DFDW6TP	STMicroelectronics	16Kbit	20 MHz	1.7V ~ 5.5V	-40°C ~ 85°C	5ms	8-TSSOP	1143
M95160-DRDW8TP/K	STMicroelectronics	16Kbit	20 MHz	1.8V ~ 5.5V	-40°C ~ 105°C	4ms	8-TSSOP	2318
M95160-RDW6TP	STMicroelectronics	16Kbit	10 MHz	1.8V ~ 5.5V	-40°C ~ 85°C	5ms	8-TSSOP	53400

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications): 25LC160D-I/ST and 25LC160A-I/ST are direct functional equivalents to 25LC160B-I/ST, maintaining identical electrical specifications, clock frequency, and operating temperature range. Both are ROHS3 compliant and in active production status.

For Extended Low-Voltage Operation: 25AA160C-I/ST and M95160-RDW6TP support operation down to 1.8V minimum supply voltage while maintaining full compatibility with 2.5V–5.5V systems. These parts are suitable for battery-powered or low-power applications requiring extended supply range capability.

For Enhanced Temperature Performance: 25LC160A-E/ST and CAV25160YE-GT3 extend operating temperature to -40°C to 125°C, accommodating high-temperature industrial and automotive environments. CAV25160YE-GT3 carries AEC-Q100 automotive qualification.

For Higher Performance Requirements: AT25160B-XHL-B, CAT25160YI-GT3, M95160-DFDW6TP, and M95160-DRDW8TP/K provide 20 MHz clock frequency operation. M95160-DRDW8TP/K additionally qualifies to AEC-Q100 automotive standards with -40°C to 105°C temperature range and 4ms write cycle time.

For Maximum Inventory Availability: M95160-RDW6TP offers the highest stock level (53,400 units) with 10 MHz clock frequency matching the base part, 1.8V–5.5V supply range, and standard -40°C to 85°C operating temperature.

Frequently Asked Questions (FAQ)

Q: Can 25LC160A-I/ST replace 25LC160B-I/ST in existing designs? A: Yes. Both parts share identical memory capacity (16Kbit), SPI interface, 10 MHz clock frequency, 2.5V–5.5V supply range, and -40°C to 85°C operating temperature. Pin-to-pin compatibility and functional equivalence are maintained.

Q: What is the difference between 10 MHz and 20 MHz clock frequency parts? A: 20 MHz parts (AT25160B-XHL-B, CAT25160YI-GT3, M95160 series) support higher SPI bus speeds. These parts operate at reduced frequency on 10 MHz buses through downward frequency compatibility, making them suitable for applications requiring future performance headroom.

Q: Are automotive-grade parts (CAV25160YE-GT3, M95160-DRDW8TP/K) required for non-automotive applications? A: Automotive-grade parts carry AEC-Q100 qualification and extended temperature ratings (-40°C to 125°C). These are required only for automotive or high-reliability applications. Standard industrial parts are sufficient for general-purpose applications within -40°C to 85°C range.

Q: Can parts with 1.8V minimum supply voltage replace 2.5V minimum parts? A: Yes, when the system supply voltage remains within 2.5V–5.5V range. Parts with 1.8V minimum (25AA160C-I/ST, AT25160B-XHL-B, CAT25160YI-GT3, M95160 series) provide extended low-voltage capability for applications requiring operation below 2.5V.

Q: What is the significance of write cycle time differences (4ms vs 5ms)? A: M95160-DRDW8TP/K specifies 4ms write cycle time versus 5ms for other parts. This represents faster page write performance. Both specifications are compatible with standard SPI EEPROM timing requirements; the 4ms specification indicates enhanced performance.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitute parts maintain ROHS3 compliance status, meeting environmental and hazardous substance restrictions equivalent to the base 25LC160B-I/ST part.

Q: What packaging format differences exist among substitutes? A: 25LC160B-I/ST is supplied in Tube packaging. Substitute parts use Tube, Tape & Reel (TR), or Cut Tape (CT) & Digi-Reel® packaging. All maintain identical 8-TSSOP physical form factor and surface mount compatibility.

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