Equivalent & Substitute Parts for 24AA014H-I/ST

Part Overview

The 24AA014H-I/ST is a 1Kbit EEPROM memory IC manufactured by Microchip Technology, featuring I2C interface with 400 kHz clock frequency and 900 ns access time. This non-volatile memory device operates across a wide supply voltage range of 1.7V to 5.5V and is housed in an 8-TSSOP surface mount package. The part is currently in active product status and ROHS3 compliant. Equivalent and substitute parts are necessary when addressing supply chain constraints, packaging requirements, or performance specifications that differ from the original design parameters.

Key Parameters

Parameter	Value
Memory Type	Non-Volatile EEPROM
Memory Size	1Kbit
Memory Organization	128 x 8
Interface	I2C
Clock Frequency	400 kHz
Access Time	900 ns
Write Cycle Time	5ms
Supply Voltage Range	1.7V ~ 5.5V
Operating Temperature	-40°C ~ 85°C
Package Type	8-TSSOP
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the 24AA014H-I/ST is determined by the following critical parameters: memory capacity (1Kbit), memory organization (128 x 8), interface protocol (I2C), and package type (8-TSSOP or compatible variants). All substitute parts must maintain identical memory specifications and I2C interface compatibility. Clock frequency and access time may vary within acceptable operational ranges. Supply voltage ranges must overlap with the original specification minimum of 1.7V. Operating temperature range must encompass the full -40°C to 85°C specification. Package compatibility includes 8-TSSOP, 8-TSSOP-B, 8-SSOP-B, and 8-MSOP variants, provided they are electrically and mechanically compatible with the original footprint. All substitute parts listed maintain ROHS3 compliance and EAR99 export classification.

Parameter Comparison

Part Number	Manufacturer	Memory Size	Clock Frequency	Access Time	Supply Voltage	Package Type	Product Status
24AA014H-I/ST	Microchip Technology	1Kbit	400 kHz	900 ns	1.7V ~ 5.5V	8-TSSOP	Active
AT24CS01-XHM-T	Microchip Technology	1Kbit	1 MHz	550 ns	1.7V ~ 5.5V	8-TSSOP	Active
BR24G01FVT-3GE2	Rohm Semiconductor	1Kbit	400 kHz	Not specified	1.6V ~ 5.5V	8-TSSOP-B	Active
BR24L01AFV-WE2	Rohm Semiconductor	1Kbit	400 kHz	Not specified	1.8V ~ 5.5V	8-SSOP-B	Not For New Designs
BR24L01AFVM-WTR	Rohm Semiconductor	1Kbit	400 kHz	Not specified	1.8V ~ 5.5V	8-MSOP	Active
BR24L01AFVT-WE2	ROHM Semiconductor	1Kbit	400 kHz	Not specified	1.8V ~ 5.5V	8-TSSOP-B	Active
BR24T01FVM-WTR	Rohm Semiconductor	1Kbit	400 kHz	Not specified	1.6V ~ 5.5V	8-MSOP	Active
BR24T01FVT-WE2	Rohm Semiconductor	1Kbit	400 kHz	Not specified	1.6V ~ 5.5V	8-TSSOP-B	Active
M24C01-RDW6TP	STMicroelectronics	1Kbit	400 kHz	900 ns	1.8V ~ 5.5V	8-TSSOP	Active
M24C01-WDW6TP	STMicroelectronics	1Kbit	400 kHz	900 ns	2.5V ~ 5.5V	8-TSSOP	Not For New Designs

Engineering Selection Recommendations

For new designs, select from parts with Active product status: AT24CS01-XHM-T, BR24G01FVT-3GE2, BR24L01AFVM-WTR, BR24L01AFVT-WE2, BR24T01FVM-WTR, BR24T01FVT-WE2, and M24C01-RDW6TP. All listed substitutes maintain ROHS3 compliance and are classified as EAR99 for export purposes.

For applications requiring identical electrical performance (400 kHz clock frequency and 900 ns access time), M24C01-RDW6TP from STMicroelectronics provides direct compatibility with the original 24AA014H-I/ST specification while maintaining Active product status.

AT24CS01-XHM-T offers enhanced performance with 1 MHz clock frequency and 550 ns access time, suitable for applications requiring faster I2C communication, while maintaining backward compatibility with 400 kHz I2C bus operation.

Rohm Semiconductor substitutes (BR24G01FVT-3GE2, BR24L01AFVM-WTR, BR24L01AFVT-WE2, BR24T01FVM-WTR, BR24T01FVT-WE2) provide alternative packaging options including 8-MSOP and 8-TSSOP-B variants. BR24L01AFV-WE2 is designated Not For New Designs and should be avoided for new product development.

M24C01-WDW6TP carries Not For New Designs status and features a reduced supply voltage range (2.5V minimum), making it unsuitable for applications requiring operation below 2.5V.

Frequently Asked Questions (FAQ)

Q: Can AT24CS01-XHM-T replace 24AA014H-I/ST in existing designs?

A: Yes. AT24CS01-XHM-T maintains identical memory capacity (1Kbit), organization (128 x 8), I2C interface, and supply voltage range (1.7V ~ 5.5V). The higher clock frequency (1 MHz vs 400 kHz) and faster access time (550 ns vs 900 ns) provide enhanced performance while remaining backward compatible with 400 kHz I2C bus operation.

Q: What is the difference between 8-TSSOP and 8-TSSOP-B packages?

A: Both packages share identical 0.173" width and 4.40mm dimensions, making them mechanically compatible. The -B designation indicates a variant specification from the manufacturer. Electrical functionality remains equivalent for I2C EEPROM applications.

Q: Why is M24C01-WDW6TP marked Not For New Designs?

A: M24C01-WDW6TP carries a reduced minimum supply voltage specification (2.5V vs 1.7V for the original part). This limitation restricts its use in applications requiring operation at lower voltages. New designs should select from Active status alternatives.

Q: Are Rohm Semiconductor BR24 series parts direct pin-for-pin replacements?

A: BR24 series parts maintain identical I2C interface and 1Kbit memory organization. Package variants (8-TSSOP-B, 8-SSOP-B, 8-MSOP) differ in physical dimensions and pin spacing. Verify PCB footprint compatibility before substitution.

Q: What supply voltage range is common to all substitute parts?

A: The overlapping supply voltage range across all Active status substitutes is 1.8V ~ 5.5V. The original 24AA014H-I/ST extends to 1.7V minimum. Applications requiring operation below 1.8V must use the original part or AT24CS01-XHM-T.

Q: Can I use BR24L01AFVM-WTR in place of 24AA014H-I/ST?

A: BR24L01AFVM-WTR is functionally compatible for I2C EEPROM applications with identical 1Kbit capacity and 400 kHz operation. However, it uses an 8-MSOP package (0.110" width) versus the original 8-TSSOP (0.173" width), requiring PCB redesign. Verify footprint compatibility before substitution.

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