Equivalent & Substitute Parts for 24C01CT/SN

Part Overview

The 24C01CT/SN is a 1Kbit EEPROM memory IC manufactured by Microchip Technology, featuring I2C interface operation at 400 kHz with 8-SOIC surface mount packaging. This component is classified as Active product status and is ROHS3 compliant. The 24C01CT/SN operates within a supply voltage range of 4.5V to 5.5V and supports industrial temperature range from 0°C to 70°C. Equivalent and substitute parts are identified to address inventory availability, extended temperature range requirements, or alternative packaging formats while maintaining core functional compatibility.

Key Parameters

Parameter	Value
Memory Size	1Kbit
Memory Organization	128 x 8
Memory Interface	I2C
Clock Frequency	400 kHz
Access Time	4.6 µs
Write Cycle Time	1.5ms
Voltage Supply Range	4.5V ~ 5.5V
Operating Temperature	0°C ~ 70°C
Package Type	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the 24C01CT/SN are grouped based on strict electrical and mechanical compatibility criteria. All substitute parts maintain the following core parameters: 1Kbit memory capacity, 128 x 8 memory organization, I2C interface protocol, 400 kHz clock frequency operation, 8-SOIC surface mount package, and ROHS3 compliance. Substitution is valid when the substitute part meets or exceeds the original specifications in access time, write cycle time, voltage supply range, and operating temperature range. Parts are categorized into direct equivalents (identical specifications) and functional substitutes (compatible with allowable parameter variations).

Parameter Comparison

Part Number	Manufacturer	Memory Size	Clock Frequency	Access Time	Write Cycle Time	Voltage Supply	Operating Temperature	Package	Inventory
24C01CT/SN	Microchip Technology	1Kbit	400 kHz	4.6 µs	1.5ms	4.5V ~ 5.5V	0°C ~ 70°C	8-SOIC	7995 Pcs
24C01C/SN	Microchip Technology	1Kbit	400 kHz	4.6 µs	1.5ms	4.5V ~ 5.5V	0°C ~ 70°C	8-SOIC	2269 Pcs
24C01CT-I/SN	Microchip Technology	1Kbit	400 kHz	900 ns	1ms	4.5V ~ 5.5V	-40°C ~ 85°C	8-SOIC	2837 Pcs
24AA014HT-I/SN	Microchip Technology	1Kbit	400 kHz	900 ns	5ms	1.7V ~ 5.5V	-40°C ~ 85°C	8-SOIC	2177 Pcs
24AA01T-I/SN	Microchip Technology	1Kbit	400 kHz	3500 ns	5ms	1.7V ~ 5.5V	-40°C ~ 85°C	8-SOIC	18996 Pcs
24LC014T-I/SN	Microchip Technology	1Kbit	400 kHz	900 ns	5ms	2.5V ~ 5.5V	-40°C ~ 85°C	8-SOIC	1900 Pcs
24LC01BHT-I/SN	Microchip Technology	1Kbit	400 kHz	900 ns	5ms	2.5V ~ 5.5V	-40°C ~ 85°C	8-SOIC	4348 Pcs
24LC01BT-E/SN	Microchip Technology	1Kbit	400 kHz	4.6 µs	5ms	2.5V ~ 5.5V	-40°C ~ 125°C	8-SOIC	3200 Pcs
24LC01BT-I/SN	Microchip Technology	1Kbit	400 kHz	4.6 µs	5ms	2.5V ~ 5.5V	-40°C ~ 85°C	8-SOIC	16688 Pcs
24LC01BT/SN	Microchip Technology	1Kbit	400 kHz	4.6 µs	5ms	2.5V ~ 5.5V	0°C ~ 70°C	8-SOIC	4300 Pcs
AT24CS01-SSHM-T	Microchip Technology	1Kbit	1 MHz	550 ns	5ms	1.7V ~ 5.5V	-40°C ~ 85°C	8-SOIC	7471 Pcs

Engineering Selection Recommendations

Direct equivalents to 24C01CT/SN include 24C01C/SN, which maintains identical electrical specifications and operating parameters with Tube packaging. The 24C01CT-I/SN provides improved performance characteristics with faster access time (900 ns) and extended temperature range (-40°C to 85°C) while maintaining the 4.5V to 5.5V supply voltage requirement.

For applications requiring extended temperature operation, 24LC01BT-E/SN supports -40°C to 125°C range with compatible 4.6 µs access time. The 24LC01BT-I/SN and 24LC01BT/SN variants offer -40°C to 85°C operation with reduced supply voltage requirement (2.5V minimum).

Parts 24AA014HT-I/SN, 24AA01T-I/SN, 24LC014T-I/SN, and 24LC01BHT-I/SN are functionally compatible substitutes with extended temperature ranges and lower minimum supply voltages. The AT24CS01-SSHM-T operates at 1 MHz clock frequency, exceeding the 400 kHz specification, and is suitable for applications requiring higher I2C bus speeds.

All substitute parts maintain ROHS3 compliance and 8-SOIC surface mount packaging. Selection should be based on specific voltage supply constraints, temperature operating range requirements, and I2C clock frequency compatibility with the target application.

Frequently Asked Questions (FAQ)

Q: Can 24C01CT-I/SN replace 24C01CT/SN in all applications?

A: Yes, 24C01CT-I/SN is a direct functional substitute. It maintains identical memory capacity, I2C interface, and 400 kHz clock frequency. The 24C01CT-I/SN provides faster access time (900 ns vs 4.6 µs) and extended temperature range (-40°C to 85°C vs 0°C to 70°C). Voltage supply range remains 4.5V to 5.5V.

Q: What is the difference between 24LC01BT-E/SN and 24LC01BT-I/SN?

A: Both parts share identical electrical specifications with 4.6 µs access time and 400 kHz I2C operation. The primary difference is operating temperature range: 24LC01BT-E/SN supports -40°C to 125°C, while 24LC01BT-I/SN supports -40°C to 85°C. Both require minimum 2.5V supply voltage.

Q: Is AT24CS01-SSHM-T compatible with 24C01CT/SN?

A: AT24CS01-SSHM-T is electrically compatible but operates at 1 MHz I2C clock frequency, exceeding the 400 kHz specification. It is suitable for applications where higher I2C bus speeds are required. The part maintains 1Kbit capacity, 128 x 8 organization, and 8-SOIC packaging.

Q: Can I use parts with lower minimum supply voltage (1.7V or 2.5V) in a 4.5V to 5.5V application?

A: Yes. Parts with lower minimum supply voltage specifications (such as 24AA014HT-I/SN at 1.7V minimum or 24LC014T-I/SN at 2.5V minimum) are compatible with 4.5V to 5.5V supply applications. The lower minimum voltage indicates broader supply range compatibility.

Q: What packaging formats are available for 1Kbit I2C EEPROM substitutes?

A: All listed substitute parts are available in 8-SOIC surface mount package (0.154", 3.90mm width). Packaging options include Cut Tape (CT) & Digi-Reel, Tape & Reel (TR), and Tube formats. Selection depends on procurement and assembly requirements.

Q: Are all substitute parts ROHS3 compliant?

A: Yes, all substitute parts listed maintain ROHS3 compliance status, consistent with the original 24C01CT/SN specification.

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