CAT24C164LI-G Equivalent & Substitute Parts

Part Overview

The CAT24C164LI-G is a 16Kbit I2C EEPROM memory IC manufactured by onsemi, packaged in 8-DIP form factor. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The part operates at 400 kHz I2C clock frequency with 900 ns access time and supports supply voltages from 1.8V to 5.5V across an operating temperature range of -40°C to 85°C.

Substiute Parts

CAT24C164LI-G

onsemiIn Stock: 1504CAT24C164LI-G Datasheet

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24AA16-E/P

Microchip TechnologyIn Stock: 1222924AA16-E/P Datasheet

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24AA16-I/P

Microchip TechnologyIn Stock: 213424AA16-I/P Datasheet

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24AA16H-I/P

Microchip TechnologyIn Stock: 93124AA16H-I/P Datasheet

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24LC16B-E/P

Microchip TechnologyIn Stock: 445524LC16B-E/P Datasheet

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24LC16B-I/P

Microchip TechnologyIn Stock: 1009824LC16B-I/P Datasheet

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24LC16B/P

Microchip TechnologyIn Stock: 329024LC16B/P Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict parameter matching across the following criteria:

Core Electrical Parameters: Memory size (16Kbit), memory organization (2K x 8), I2C interface, 400 kHz clock frequency, 900 ns access time, and 5ms write cycle time must remain constant across all substitutes.

Package Compatibility: All substitutes must use 8-DIP (0.300", 7.62mm) through-hole packaging to ensure mechanical and electrical compatibility with existing PCB layouts.

Voltage and Temperature Ranges: Substitute parts must support the required operating conditions. The main part specifies 1.8V to 5.5V supply voltage and -40°C to 85°C operating temperature. Substitutes with equal or broader ranges are acceptable.

Compliance and Status: Active product status is preferred for long-term availability. RoHS3 compliance and REACH unaffected status are standard across all identified substitutes.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Recommended): The 24AA16-I/P and 24LC16B-I/P are the preferred substitutes. Both are active products with verified programmability status, RoHS3 compliance, and matching temperature ranges (-40°C to 85°C). The 24AA16-I/P supports the lower voltage threshold (1.7V minimum) matching the original part's 1.8V specification more closely, while the 24LC16B-I/P operates at 2.5V minimum with higher inventory availability (10000 units).

Extended Temperature Range Option: The 24AA16-E/P and 24LC16B-E/P extend the upper operating temperature to 125°C, suitable for applications requiring enhanced thermal performance. Both maintain active product status and full compliance certifications.

Limited Temperature Range: The 24LC16B/P operates within 0°C to 70°C, restricting its use to commercial temperature applications only. This part is not suitable for designs requiring the full -40°C to 85°C range of the original component.

Voltage Compatibility Consideration: The 24LC16B series (24LC16B-E/P, 24LC16B-I/P, 24LC16B/P) specifies a minimum supply voltage of 2.5V, compared to the CAT24C164LI-G minimum of 1.8V. Verify system power supply specifications before selecting 24LC16B variants for applications requiring operation below 2.5V.

Frequently Asked Questions (FAQ)

Q: Can I directly replace CAT24C164LI-G with any of the listed substitutes?

A: Direct replacement is possible only if the substitute meets your specific voltage and temperature requirements. All listed substitutes maintain identical memory capacity (16Kbit), I2C interface, clock frequency (400 kHz), and 8-DIP package. Verify that your system's supply voltage range and operating temperature range are compatible with the selected substitute.

Q: What is the difference between 24AA16 and 24LC16B series?

A: Both series are 16Kbit I2C EEPROMs with identical memory organization and interface specifications. The primary difference is the minimum supply voltage: 24AA16 operates from 1.7V minimum, while 24LC16B requires 2.5V minimum. Select 24AA16 for low-voltage applications and 24LC16B for standard industrial voltage ranges.

Q: Why does 24LC16B/P have a narrower temperature range?

A: The 24LC16B/P variant is specified for commercial temperature operation (0°C to 70°C) only. This part is not suitable for applications requiring the full industrial temperature range (-40°C to 85°C) of the original CAT24C164LI-G. Use 24LC16B-I/P or 24LC16B-E/P for extended temperature requirements.

Q: Are all substitutes RoHS3 compliant?

A: Yes. All Microchip Technology substitutes listed carry RoHS3 compliance and REACH unaffected status, matching the environmental compliance profile of the original onsemi part.

Q: Which substitute has the best inventory availability?

A: The 24AA16-E/P offers the highest inventory (12200 units), followed by 24LC16B-I/P (10000 units). Both are active products with immediate availability for production requirements.