CAT24C01ZI-GT3 Equivalent & Substitute Parts

Part Overview

The CAT24C01ZI-GT3 is a 1Kbit EEPROM memory IC with I2C interface operating at 400 kHz, manufactured by onsemi in 8-MSOP surface mount packaging. This part is classified as obsolete, making equivalent substitute components necessary for new designs and ongoing production requirements. The CAT24C01ZI-GT3 provides non-volatile memory storage with 128 x 8 organization and operates across a supply voltage range of 1.7V to 5.5V with an operating temperature range of -40°C to 85°C.

Key Parameters

Parameter	Value
Memory Type	Non-Volatile EEPROM
Memory Size	1Kbit
Memory Organization	128 x 8
Memory Interface	I2C
Clock Frequency	400 kHz
Access Time	900 ns
Write Cycle Time	5ms
Voltage Supply Range	1.7V ~ 5.5V
Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mount
Package	8-MSOP (0.118", 3.00mm Width)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution for the CAT24C01ZI-GT3 is determined by strict equivalence across the following parameters: memory size (1Kbit), memory organization (128 x 8), interface protocol (I2C), clock frequency (400 kHz), package type (8-MSOP), and mounting method (surface mount). Access time and write cycle time are secondary considerations that do not prevent substitution when other parameters match. Voltage supply range and operating temperature range may vary within acceptable limits for specific applications. All substitute parts listed maintain active product status, ensuring ongoing availability and support compared to the obsolete CAT24C01ZI-GT3.

Parameter Comparison

Part Number	Manufacturer	Memory Size	Memory Organization	Interface	Clock Frequency	Access Time	Voltage Supply	Operating Temperature	Package	Product Status	RoHS Status
CAT24C01ZI-GT3	onsemi	1Kbit	128 x 8	I2C	400 kHz	900 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-MSOP	Obsolete	REACH Unaffected
24AA01-I/MS	Microchip Technology	1Kbit	128 x 8	I2C	400 kHz	3500 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-MSOP	Active	ROHS3 Compliant
24AA014-I/MS	Microchip Technology	1Kbit	128 x 8	I2C	400 kHz	900 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-MSOP	Active	ROHS3 Compliant
24AA01H-I/MS	Microchip Technology	1Kbit	128 x 8	I2C	400 kHz	900 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-MSOP	Active	ROHS3 Compliant
24AA01T-I/MS	Microchip Technology	1Kbit	128 x 8	I2C	400 kHz	3500 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-MSOP	Active	ROHS3 Compliant
24LC014-E/MS	Microchip Technology	1Kbit	128 x 8	I2C	400 kHz	900 ns	2.5V ~ 5.5V	-40°C ~ 125°C	8-MSOP	Active	ROHS3 Compliant
24LC014-I/MS	Microchip Technology	1Kbit	128 x 8	I2C	400 kHz	900 ns	2.5V ~ 5.5V	-40°C ~ 85°C	8-MSOP	Active	ROHS3 Compliant
24LC014T-E/MS	Microchip Technology	1Kbit	128 x 8	I2C	400 kHz	900 ns	2.5V ~ 5.5V	-40°C ~ 125°C	8-MSOP	Active	ROHS3 Compliant
24LC014T-I/MS	Microchip Technology	1Kbit	128 x 8	I2C	400 kHz	900 ns	2.5V ~ 5.5V	-40°C ~ 85°C	8-MSOP	Active	ROHS3 Compliant
24LC01B-E/MS	Microchip Technology	1Kbit	128 x 8	I2C	400 kHz	4.6 µs	2.5V ~ 5.5V	-40°C ~ 125°C	8-MSOP	Active	ROHS3 Compliant
24LC01B-I/MS	Microchip Technology	1Kbit	128 x 8	I2C	400 kHz	4.6 µs	2.5V ~ 5.5V	-40°C ~ 85°C	8-MSOP	Active	ROHS3 Compliant

Engineering Selection Recommendations

All listed substitute parts are manufactured by Microchip Technology and maintain active product status, providing long-term availability and supply chain stability. The 24AA014-I/MS and 24AA01H-I/MS offer the closest electrical match to the CAT24C01ZI-GT3, with identical access time (900 ns), voltage supply range (1.7V ~ 5.5V), and operating temperature range (-40°C ~ 85°C). These parts are ROHS3 compliant and carry unlimited moisture sensitivity level (MSL: 1).

For applications requiring extended operating temperature range to 125°C, the 24LC014-E/MS, 24LC014T-E/MS, 24LC01B-E/MS, and 24LC01B-I/MS are suitable alternatives. The 24LC014 series operates at a minimum supply voltage of 2.5V, which may require circuit evaluation if the original design operates below this threshold.

Parts with 3500 ns or 4.6 µs access time (24AA01-I/MS, 24AA01T-I/MS, 24LC01B-E/MS, 24LC01B-I/MS) are functionally equivalent for applications where access time is not a critical timing constraint. The 24LC014T-I/MS variant is verified as programmable and available in tape and reel packaging with the highest inventory level (2420 pcs), making it suitable for high-volume production requirements.

Frequently Asked Questions (FAQ)

Q: Can the 24AA01-I/MS replace the CAT24C01ZI-GT3 directly?

A: Yes. Both parts share identical memory capacity (1Kbit), organization (128 x 8), interface (I2C), clock frequency (400 kHz), package (8-MSOP), voltage supply range (1.7V ~ 5.5V), and operating temperature range (-40°C ~ 85°C). The 24AA01-I/MS has a longer access time (3500 ns vs. 900 ns), which does not prevent substitution in most applications.

Q: What is the difference between 24AA01 and 24LC01 series parts?

A: The 24AA01 series operates at 1.7V minimum supply voltage, while the 24LC01 series requires 2.5V minimum. The 24LC01 series also supports extended operating temperature to 125°C. Selection depends on the specific voltage and temperature requirements of the application.

Q: Does packaging type affect substitution?

A: All substitute parts use 8-MSOP surface mount packaging identical to the CAT24C01ZI-GT3. Packaging variants (Tube vs. Tape & Reel) affect handling and assembly processes but do not affect electrical compatibility. The choice between tube and tape & reel depends on production volume and assembly equipment.

Q: Are all substitute parts RoHS compliant?

A: Yes. All listed substitute parts are ROHS3 compliant, meeting current environmental and regulatory requirements. The original CAT24C01ZI-GT3 is REACH unaffected, and all substitutes maintain REACH unaffected status.

Q: Which substitute part has the best inventory availability?

A: The 24LC014T-I/MS offers the highest inventory level at 2420 pcs and is verified as programmable. This part is available in tape and reel packaging, suitable for automated assembly and high-volume production.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message