AT24C01A-10PI-2.5 Equivalent & Substitute Parts

Part Overview

The AT24C01A-10PI-2.5 is a 1Kbit EEPROM memory IC with I2C interface operating at 400 kHz, manufactured by Microchip Technology. This component features 128 x 8 memory organization in an 8-DIP through-hole package. The part is currently obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. Alternative parts maintain functional compatibility while offering improved availability and compliance status.

Key Parameters

Parameter	Value
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	2.5V ~ 5.5V
Operating Temperature	-40°C ~ 85°C
Package Type	8-DIP (0.300", 7.62mm)
Mounting Type	Through Hole

Substitute Part Grouping Explanation

Substitute parts for the AT24C01A-10PI-2.5 are classified based on electrical and mechanical parameter compatibility:

Direct Substitutes maintain identical or compatible electrical specifications including memory size (1Kbit), memory organization (128 x 8), I2C interface, 400 kHz clock frequency, 5ms write cycle time, and 8-DIP through-hole package. Substitution eligibility is determined by:

Memory capacity and organization matching
I2C protocol compatibility at 400 kHz operation
Supply voltage range compatibility (minimum 2.5V required)
Access time specifications (900 ns or faster acceptable)
Identical package and mounting configuration
Operating temperature range coverage (-40°C to 85°C)

All substitute parts listed are manufactured by Microchip Technology and share the same base product family, ensuring pin-compatible operation in existing circuit designs.

Parameter Comparison

Parameter	AT24C01A-10PI-2.5	24AA014H-I/P	24LC01B-I/P	24LC014-I/P	24LC01BH-I/P
Memory Size	1Kbit	1Kbit	1Kbit	1Kbit	1Kbit
Memory Organization	128 x 8	128 x 8	128 x 8	128 x 8	128 x 8
Memory Interface	I2C	I2C	I2C	I2C	I2C
Clock Frequency	400 kHz	400 kHz	400 kHz	400 kHz	400 kHz
Access Time	900 ns	900 ns	4.6 µs	900 ns	900 ns
Write Cycle Time	5ms	5ms	5ms	5ms	5ms
Voltage Supply Range	2.5V ~ 5.5V	1.7V ~ 5.5V	2.5V ~ 5.5V	2.5V ~ 5.5V	2.5V ~ 5.5V
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Package Type	8-DIP	8-DIP	8-DIP	8-DIP	8-DIP
Product Status	Obsolete	Active	Active	Active	Active
RoHS Status	Non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

24LC01B-I/P is the manufacturer-recommended substitute. This part is in active production status with verified DiGi-Electronics programmability and ROHS3 compliance. It maintains full electrical compatibility with the AT24C01A-10PI-2.5 across all critical parameters including supply voltage range, operating temperature, and I2C interface specifications. The 24LC01B-I/P offers the highest inventory availability (10,300 units) among substitute options.

24LC014-I/P and 24LC01BH-I/P are parametric equivalents offering identical electrical specifications to the original part, including 900 ns access time. Both are active products with ROHS3 compliance. These options provide direct functional replacement with lower inventory levels.

24AA014H-I/P is a direct substitute with extended supply voltage range (1.7V ~ 5.5V), providing additional design flexibility for low-voltage applications. This part is active and ROHS3 compliant with good inventory availability (2,300 units).

All substitute parts are pin-compatible through-hole 8-DIP packages suitable for direct PCB replacement without design modification.

Frequently Asked Questions (FAQ)

Q: Can I use 24AA014H-I/P as a direct replacement for AT24C01A-10PI-2.5?

A: Yes. The 24AA014H-I/P maintains identical memory capacity, organization, I2C interface, clock frequency, and package configuration. The extended supply voltage range (1.7V ~ 5.5V) provides additional compatibility margin compared to the original 2.5V ~ 5.5V specification.

Q: What is the difference between 24LC01B-I/P and 24LC014-I/P?

A: Both parts are electrically equivalent with identical 1Kbit capacity, 128 x 8 organization, and 400 kHz I2C operation. The primary difference is product availability and base part number designation. Both are suitable substitutes for the AT24C01A-10PI-2.5.

Q: Does the 4.6 µs access time of 24LC01B-I/P affect compatibility?

A: No. The 4.6 µs access time is faster than the original 900 ns specification, ensuring full backward compatibility. Designs requiring the original 900 ns timing can use 24LC014-I/P or 24LC01BH-I/P without modification.

Q: Are all substitute parts RoHS compliant?

A: Yes. All substitute parts listed (24AA014H-I/P, 24LC01B-I/P, 24LC014-I/P, 24LC01BH-I/P) are ROHS3 compliant, whereas the original AT24C01A-10PI-2.5 is RoHS non-compliant.

Q: Can these parts be used interchangeably on the same PCB?

A: Yes. All substitute parts use identical 8-DIP through-hole package configuration with matching pin assignments, enabling direct PCB replacement without layout modification.

Q: Which substitute offers the best long-term availability?

A: The 24LC01B-I/P is the manufacturer-recommended option with the highest inventory level (10,300 units) and active production status, providing optimal long-term supply assurance.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message