24LC014HT-E/MS EEPROM Memory IC Equivalent & Substitute Parts

Part Overview

The 24LC014HT-E/MS is a 1Kbit I2C EEPROM memory IC manufactured by Microchip Technology, supplied in 8-MSOP packaging with Tape & Reel (TR) configuration. This non-volatile memory device operates at 1 MHz clock frequency with 400 ns access time and supports supply voltages from 2.5V to 5.5V across an operating temperature range of -40°C to 125°C. The device is ROHS3 compliant and currently maintains Active product status with 1029 units in stock.

Equivalent and substitute parts are necessary when the primary part becomes unavailable, when alternative packaging formats are required for manufacturing processes, or when design specifications allow for compatible alternatives with different electrical operating ranges or performance characteristics.

Key Parameters

Parameter	Value
Memory Size	1Kbit
Memory Organization	128 x 8
Memory Interface	I2C
Clock Frequency	1 MHz
Access Time	400 ns
Write Cycle Time	5ms
Voltage Supply Range	2.5V ~ 5.5V
Operating Temperature	-40°C ~ 125°C
Mounting Type	Surface Mount
Package Type	8-MSOP (0.118", 3.00mm Width)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the 24LC014HT-E/MS is determined by the following core parameters: 1Kbit memory capacity, 128 x 8 memory organization, I2C interface protocol, and surface mount technology. All substitute parts listed maintain these fundamental specifications.

Substitute parts are grouped into two categories based on clock frequency capability:

Category 1: 1 MHz Clock Frequency Parts – Direct functional equivalents with identical 1 MHz operation, 400 ns access time, and full compatibility with designs requiring maximum I2C speed. These parts include AT24C01D-XHM-B, AT24C01D-XHM-T, BR24G01FVM-3AGTTR, and BR24L01AFVM-WTR.

Category 2: 400 kHz Clock Frequency Parts – Compatible alternatives operating at reduced I2C clock speed (400 kHz). These parts include BR24G01FVJ-3GTE2, BR24G01FVT-3GE2, BR24L01AFV-WE2, BR24L01AFVT-WE2, BR24T01FVM-WTR, and BR24T01FVT-WE2. These parts are suitable for applications where 400 kHz I2C operation is acceptable.

Packaging variations (8-MSOP, 8-TSSOP, 8-SSOP) are available across substitute options to accommodate different PCB assembly and manufacturing requirements. Voltage supply ranges vary between 1.6V–5.5V and 1.7V–3.6V across substitute parts, requiring verification against specific circuit design requirements.

Parameter Comparison

Part Number	Manufacturer	Memory Size	Clock Frequency	Access Time	Voltage Supply	Operating Temperature	Package Type	Product Status
24LC014HT-E/MS	Microchip Technology	1Kbit	1 MHz	400 ns	2.5V ~ 5.5V	-40°C ~ 125°C	8-MSOP	Active
AT24C01D-XHM-B	Microchip Technology	1Kbit	1 MHz	4.5 µs	1.7V ~ 3.6V	-40°C ~ 85°C	8-TSSOP	Active
AT24C01D-XHM-T	Microchip Technology	1Kbit	1 MHz	4.5 µs	1.7V ~ 3.6V	-40°C ~ 85°C	8-TSSOP	Active
BR24G01FVJ-3GTE2	Rohm Semiconductor	1Kbit	400 kHz	Not Specified	1.6V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Not For New Designs
BR24G01FVM-3AGTTR	Rohm Semiconductor	1Kbit	1 MHz	Not Specified	1.6V ~ 5.5V	-40°C ~ 85°C	8-MSOP	Active
BR24G01FVT-3GE2	Rohm Semiconductor	1Kbit	400 kHz	Not Specified	1.6V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Active
BR24L01AFV-WE2	Rohm Semiconductor	1Kbit	400 kHz	Not Specified	1.8V ~ 5.5V	-40°C ~ 85°C	8-LSSOP	Not For New Designs
BR24L01AFVM-WTR	Rohm Semiconductor	1Kbit	400 kHz	Not Specified	1.8V ~ 5.5V	-40°C ~ 85°C	8-MSOP	Active
BR24L01AFVT-WE2	Rohm Semiconductor	1Kbit	400 kHz	Not Specified	1.8V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Active
BR24T01FVM-WTR	Rohm Semiconductor	1Kbit	400 kHz	Not Specified	1.6V ~ 5.5V	-40°C ~ 85°C	8-MSOP	Active
BR24T01FVT-WE2	Rohm Semiconductor	1Kbit	400 kHz	Not Specified	1.6V ~ 5.5V	-40°C ~ 85°C	8-TSSOP	Active

Engineering Selection Recommendations

For Direct 1 MHz Replacement with Extended Temperature Range: The 24LC014HT-E/MS operates across -40°C to 125°C. Among substitute parts, only the primary device maintains this extended upper temperature limit. Designs requiring operation above 85°C must retain the 24LC014HT-E/MS or accept the reduced temperature ceiling of substitute parts.

For 1 MHz Operation with Reduced Voltage Range: AT24C01D-XHM-B and AT24C01D-XHM-T provide 1 MHz clock frequency but operate within 1.7V to 3.6V supply range, compared to the primary part's 2.5V to 5.5V range. These parts are suitable only for low-voltage applications and are not compatible with 5V logic systems.

For Active Product Status with 1 MHz Performance: BR24G01FVM-3AGTTR (Rohm Semiconductor) is the only substitute part combining Active product status with 1 MHz clock frequency. This part operates across 1.6V to 5.5V and -40°C to 85°C, making it suitable for designs accepting the reduced upper temperature limit.

For 400 kHz Operation: BR24L01AFVM-WTR, BR24L01AFVT-WE2, BR24T01FVM-WTR, and BR24T01FVT-WE2 all maintain Active product status with 400 kHz I2C operation. These parts are suitable for applications where reduced I2C clock speed is acceptable and provide broad voltage compatibility (1.6V to 5.5V or 1.8V to 5.5V).

Avoid for New Designs: BR24G01FVJ-3GTE2 and BR24L01AFV-WE2 carry "Not For New Designs" product status and should not be selected for new circuit implementations.

Compliance and Certifications: All listed parts maintain ROHS3 compliance and REACH Unaffected status, matching the primary device's regulatory standing. Moisture Sensitivity Level 1 (Unlimited) is standard across all parts except AT24C01D-XHM-B (MSL 3, 168 Hours).

Frequently Asked Questions (FAQ)

Q: Can I substitute a 400 kHz part for the 1 MHz 24LC014HT-E/MS? A: Yes, if your application design allows reduced I2C clock speed. The 400 kHz parts (BR24L01AFVM-WTR, BR24T01FVM-WTR, and others) maintain identical 1Kbit memory capacity and 128 x 8 organization. However, I2C communication will operate at maximum 400 kHz instead of 1 MHz, potentially affecting system timing requirements.

Q: What is the difference between 8-MSOP, 8-TSSOP, and 8-LSSOP packages? A: These are different surface mount package formats with varying physical dimensions. 8-MSOP (0.118" width) and 8-VSSOP (0.110" width) are narrower packages suitable for compact PCB layouts. 8-TSSOP (0.173" width) and 8-LSSOP (0.173" width) are wider packages. Package selection depends on PCB design constraints and assembly equipment capabilities. Pin configurations and electrical function remain identical across these package types.

Q: Can I use AT24C01D-XHM-T in a 5V system? A: No. AT24C01D-XHM-T operates within 1.7V to 3.6V supply range and is not rated for 5V operation. The primary device (24LC014HT-E/MS) and Rohm parts (BR24G01FVM-3AGTTR, BR24T01FVM-WTR) support 5V operation through their 1.6V–5.5V or 2.5V–5.5V voltage ranges.

Q: What does "Not For New Designs" product status mean? A: Parts marked "Not For New Designs" (BR24G01FVJ-3GTE2, BR24L01AFV-WE2) are legacy components that manufacturers no longer recommend for new circuit development. These parts may have limited future availability or reduced manufacturer support. Use only when retrofitting existing designs or when no alternative is available.

Q: Does the 24LC014HT-E/MS work at temperatures above 85°C? A: Yes. The 24LC014HT-E/MS is rated for -40°C to 125°C operation, making it suitable for high-temperature applications. Most substitute parts are limited to -40°C to 85°C. If your application requires operation above 85°C, retain the primary part or verify substitute part temperature ratings against your specific requirements.

Q: Are all listed parts ROHS3 compliant? A: Yes. All substitute parts listed maintain ROHS3 compliance and REACH Unaffected status, matching the primary device's regulatory certifications.

Q: What is Moisture Sensitivity Level (MSL) and why does it matter? A: MSL indicates how long a component can be exposed to ambient humidity before soldering. MSL 1 (Unlimited) parts have no time restrictions. MSL 3 (168 Hours) parts like AT24C01D-XHM-B must be soldered within 168 hours of opening the package. For high-volume manufacturing or extended storage, MSL 1 parts are preferred.

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