Equivalent & Substitute Parts for 24LC014T-E/ST

Part Overview

The 24LC014T-E/ST is a 1Kbit EEPROM memory IC manufactured by Microchip Technology, featuring I2C interface with 400 kHz clock frequency and 8-TSSOP surface mount packaging. This component operates across a wide voltage range of 2.5V to 5.5V and temperature range of -40°C to 125°C, making it suitable for industrial and consumer applications requiring non-volatile memory storage. The part is currently in active production status and ROHS3 compliant.

Substitute parts are necessary when the original component becomes unavailable, when alternative packaging formats are required for manufacturing optimization, or when enhanced performance specifications (such as higher clock frequency or lower operating voltage) are needed for system upgrades.

Key Parameters

Parameter	24LC014T-E/ST
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 ~ 125°C
Package Type	8-TSSOP
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the 24LC014T-E/ST is determined by the following critical parameters:

Core Compatibility Requirements:

Memory Size: 1Kbit (128 x 8 organization)
Memory Interface: I2C protocol
Memory Type: Non-Volatile EEPROM
Write Cycle Time: 5ms
Mounting Type: Surface Mount
RoHS Status: ROHS3 Compliant

Performance Variation Parameters:

Clock Frequency: 400 kHz (baseline) or higher frequencies acceptable
Access Time: 900 ns (baseline) or faster acceptable
Voltage Supply Range: Must encompass or exceed 2.5V ~ 5.5V
Operating Temperature: Must support -40°C ~ 125°C or subset thereof
Package Format: 8-TSSOP, 8-MSOP, or 8-LSSOP acceptable

Substitute parts are grouped into two categories: direct replacements maintaining identical electrical and thermal specifications, and enhanced alternatives offering higher clock frequencies or extended voltage ranges while maintaining core memory functionality.

Parameter Comparison

Part Number	Manufacturer	Memory Size	Clock Frequency	Access Time	Voltage Supply	Operating Temp	Package	Product Status
24LC014T-E/ST	Microchip Technology	1Kbit	400 kHz	900 ns	2.5V ~ 5.5V	-40°C ~ 125°C	8-TSSOP	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

Primary Substitutes (Active Status, Matching Specifications):

BR24G01FVT-3GE2, BR24L01AFVM-WTR, BR24L01AFVT-WE2, BR24T01FVM-WTR, and BR24T01FVT-WE2 are suitable direct substitutes. These parts maintain 1Kbit memory capacity, I2C interface, 400 kHz clock frequency, and 5ms write cycle time. All are ROHS3 compliant and in active production. The Rohm Semiconductor BR24 series parts offer voltage supply ranges of 1.6V to 5.5V or 1.8V to 5.5V, which encompass the original 2.5V to 5.5V specification. Operating temperature range is -40°C to 85°C, which covers the lower portion of the original -40°C to 125°C range.

Enhanced Performance Alternatives (Active Status, Higher Clock Frequency):

AT24C01D-XHM-B and AT24C01D-XHM-T offer 1 MHz clock frequency and 4.5 µs access time, providing improved performance over the baseline 400 kHz and 900 ns specifications. Both are Microchip Technology products in active production and ROHS3 compliant. However, these parts operate within 1.7V to 3.6V voltage range and -40°C to 85°C temperature range, which represents a narrower specification window than the original part.

Legacy Alternatives (Not For New Designs):

BR24G01FVJ-3GTE2 and BR24L01AFV-WE2 carry "Not For New Designs" status and should not be selected for new product development, though they remain available for legacy system support.

Frequently Asked Questions (FAQ)

Q: Can AT24C01D-XHM-B or AT24C01D-XHM-T be used as direct replacements for 24LC014T-E/ST?

A: These parts are functionally compatible at the I2C protocol level and share identical 1Kbit memory organization. However, the voltage supply range differs: AT24C01D variants operate at 1.7V to 3.6V versus the original 2.5V to 5.5V. If your system operates above 3.6V or below 1.7V, these substitutes are not suitable. The operating temperature range is also reduced to -40°C to 85°C.

Q: What is the difference between 8-TSSOP, 8-MSOP, and 8-LSSOP packages?

A: All three are surface mount packages with 8 pins. 8-TSSOP measures 0.173" width (4.40mm), 8-MSOP measures 0.110" width (2.80mm), and 8-LSSOP measures 0.173" width (4.40mm). Package selection depends on PCB layout constraints and manufacturing equipment capabilities. Electrical functionality remains identical across package variants.

Q: Are Rohm Semiconductor BR24 series parts fully compatible with Microchip 24LC014 series?

A: Yes, BR24 series parts maintain I2C protocol compatibility, identical 1Kbit memory capacity, and matching 5ms write cycle time. All substitute parts listed are ROHS3 compliant and support the same memory organization (128 x 8). Voltage and temperature ranges vary by specific part number, requiring verification against your system requirements.

Q: Why do some substitute parts have "Not For New Designs" status?

A: Parts marked "Not For New Designs" are in mature or end-of-life phases. While functionally operational and available in inventory, manufacturers recommend using active status alternatives for new product development to ensure long-term supply availability and continued manufacturer support.

Q: What is the significance of clock frequency differences between 400 kHz and 1 MHz?

A: Clock frequency determines I2C bus speed and data transfer rate. The 1 MHz variants (AT24C01D series) provide faster communication compared to 400 kHz baseline. Both frequencies are compatible with standard I2C protocol. Selection depends on system timing requirements; faster clock frequency is beneficial for high-speed data access but not necessary for all applications.

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