Equivalent & Substitute Parts for 24AA014-I/ST

Part Overview

The 24AA014-I/ST is a 1Kbit EEPROM memory IC manufactured by Microchip Technology, featuring I2C interface communication at 400 kHz with 900 ns access time. This non-volatile memory device is housed in an 8-TSSOP surface mount package and operates across a supply voltage range of 1.7V to 5.5V with an operating temperature range of -40°C to 85°C. The product maintains Active status and is ROHS3 compliant. Equivalent and substitute parts are identified based on matching memory capacity, interface protocol, package type, and electrical operating parameters to ensure functional interchangeability in circuit applications.

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	1.7V ~ 5.5V
Operating Temperature	-40°C ~ 85°C
Package Type	8-TSSOP
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the 24AA014-I/ST are qualified based on the following critical parameters:

Memory Capacity & Organization: All substitutes maintain 1Kbit capacity with 128 x 8 organization
Interface Protocol: I2C interface is mandatory for all substitutes
Package Compatibility: 8-TSSOP package type ensures mechanical and electrical pin compatibility
Electrical Specifications: Supply voltage range and operating temperature must support the application requirements
Access Time & Clock Frequency: Substitutes with equal or faster specifications maintain backward compatibility

Substitutes are grouped into two categories based on clock frequency capability:

Category A - 400 kHz I2C Operation: M24C01-RDW6TP, M24C01-WDW6TP, BR24G01FVT-3GE2, BR24L01AFVT-WE2, BR24T01FVT-WE2

Category B - 1 MHz I2C Operation: AT24CS01-XHM-T (higher speed operation with improved access time)

Parameter Comparison

Part Number	Manufacturer	Memory Size	Clock Frequency	Access Time	Voltage Supply	Operating Temp	Package	Product Status
24AA014-I/ST	Microchip Technology	1Kbit	400 kHz	900 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Active
AT24CS01-XHM-T	Microchip Technology	1Kbit	1 MHz	550 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Active
M24C01-RDW6TP	STMicroelectronics	1Kbit	400 kHz	900 ns	1.8V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Active
M24C01-WDW6TP	STMicroelectronics	1Kbit	400 kHz	900 ns	2.5V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Not For New Designs
BR24G01FVT-3GE2	Rohm Semiconductor	1Kbit	400 kHz	Not Specified	1.6V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Active
BR24L01AFVT-WE2	ROHM Semiconductor	1Kbit	400 kHz	Not Specified	1.8V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Active
BR24T01FVT-WE2	Rohm Semiconductor	1Kbit	400 kHz	Not Specified	1.6V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Active

Engineering Selection Recommendations

Primary Substitutes (Recommended for New Designs)

AT24CS01-XHM-T: Microchip Technology manufacture ensures design continuity. Operates at 1 MHz with 550 ns access time, providing performance headroom. Active product status with ROHS3 compliance. Suitable for applications requiring faster I2C communication.
M24C01-RDW6TP: STMicroelectronics equivalent with identical electrical specifications to the main part (400 kHz, 900 ns access time). Active product status. Recommended for direct replacement in existing designs.
BR24L01AFVT-WE2: ROHM Semiconductor alternative with 400 kHz operation. Active product status with ROHS3 compliance. Minimum supply voltage of 1.8V requires verification against application requirements.

Secondary Substitutes (Legacy or Constrained Applications)

M24C01-WDW6TP: STMicroelectronics part marked "Not For New Designs." Minimum supply voltage of 2.5V restricts use to higher voltage applications. Suitable only for legacy system maintenance.
BR24G01FVT-3GE2 and BR24T01FVT-WE2: ROHM Semiconductor alternatives with 400 kHz operation and Active status. Minimum supply voltage of 1.6V provides broader low-voltage compatibility.

All substitute parts maintain ROHS3 compliance, REACH unaffected status, and identical package dimensions (8-TSSOP, 0.173" width, 4.40mm).

Frequently Asked Questions (FAQ)

Q: Can AT24CS01-XHM-T replace 24AA014-I/ST in all applications?

A: AT24CS01-XHM-T operates at 1 MHz clock frequency compared to the 24AA014-I/ST's 400 kHz. This higher speed is backward compatible with 400 kHz I2C bus systems. The 550 ns access time is faster than the 900 ns specification. Electrical supply voltage range (1.7V ~ 5.5V) and operating temperature (-40°C ~ 85°C) are identical. Pin-compatible 8-TSSOP package ensures mechanical fit. Substitution is valid for all applications.

Q: What is the difference between M24C01-RDW6TP and M24C01-WDW6TP?

A: Both are STMicroelectronics 1Kbit I2C EEPROM devices with identical memory specifications and 400 kHz operation. The primary difference is product status: M24C01-RDW6TP is Active, while M24C01-WDW6TP is marked "Not For New Designs." Additionally, M24C01-WDW6TP has a minimum supply voltage of 2.5V versus 1.8V for M24C01-RDW6TP, restricting its use to higher voltage applications. For new designs, M24C01-RDW6TP is the preferred choice.

Q: Are ROHM Semiconductor parts (BR24L01AFVT-WE2, BR24G01FVT-3GE2, BR24T01FVT-WE2) fully compatible?

A: All three ROHM parts are 1Kbit I2C EEPROM devices in 8-TSSOP packages with 400 kHz operation, 5ms write cycle time, and -40°C to 85°C operating temperature. All maintain Active product status and ROHS3 compliance. Voltage supply ranges vary slightly: BR24G01FVT-3GE2 and BR24T01FVT-WE2 support 1.6V minimum, while BR24L01AFVT-WE2 requires 1.8V minimum. Pin compatibility and functional equivalence are confirmed across all three variants.

Q: What packaging options are available for substitutes?

A: All substitute parts are supplied in 8-TSSOP surface mount packages with identical physical dimensions (0.173" width, 4.40mm). Packaging formats differ by supplier: AT24CS01-XHM-T and M24C01 variants are available in Cut Tape (CT) & Digi-Reel format, while ROHM parts are supplied in Tape & Reel (TR) format. These packaging differences do not affect electrical or mechanical compatibility.

Q: Which substitute offers the lowest minimum supply voltage?

A: BR24G01FVT-3GE2 and BR24T01FVT-WE2 both support a minimum supply voltage of 1.6V, the lowest among all substitutes. The main part 24AA014-I/ST and AT24CS01-XHM-T support 1.7V minimum. M24C01-RDW6TP requires 1.8V, while M24C01-WDW6TP requires 2.5V minimum. Selection should be based on specific application voltage requirements.

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