24LC014H-E/ST EEPROM Memory IC Equivalent & Substitute Parts

Part Overview

The 24LC014H-E/ST is a 1Kbit I2C EEPROM memory IC manufactured by Microchip Technology, packaged in 8-TSSOP surface mount 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 in active production status. Equivalent and substitute parts are identified based on matching memory capacity, I2C interface protocol, package compatibility, and electrical operating parameters that ensure functional interchangeability in circuit applications.

Key Parameters

Parameter	24LC014H-E/ST
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 (TA)
Package Type	8-TSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the 24LC014H-E/ST are qualified based on the following mandatory matching criteria:

Core Electrical Parameters (Required Match):

Memory capacity: 1Kbit
Memory organization: 128 x 8 bits
Interface protocol: I2C
Write cycle time: 5ms
Package/case type: 8-TSSOP or compatible 8-pin surface mount variants

Allowable Variations:

Clock frequency: 400 kHz to 1 MHz (lower frequencies remain compatible)
Access time: 4.5 µs to 400 ns (faster access times are acceptable)
Supply voltage range: Minimum 1.6V to 2.5V; maximum 3.6V to 5.5V (overlapping ranges qualify as substitutes)
Operating temperature: -40°C minimum; maximum 85°C to 125°C (narrower ranges acceptable for non-extended temperature applications)
Packaging format: Tube, Cut Tape, Tape & Reel (all surface mount formats compatible)

Substitutes are grouped by manufacturer (Microchip Technology and Rohm Semiconductor) and by package variant (8-TSSOP, 8-MSOP, 8-LSSOP).

Parameter Comparison

Part Number	Manufacturer	Memory Size	Clock Frequency	Access Time	Supply Voltage	Operating Temp	Package	Product Status
24LC014H-E/ST	Microchip Technology	1Kbit	1 MHz	400 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-BJ	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-B	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-B	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-B	Active

Engineering Selection Recommendations

Primary Substitutes (Active Status, Full Compatibility):

AT24C01D-XHM-B and AT24C01D-XHM-T from Microchip Technology are direct substitutes for the 24LC014H-E/ST. Both devices maintain 1Kbit capacity, 1 MHz clock frequency, 8-TSSOP packaging, and ROHS3 compliance. These parts are in active production. The supply voltage range (1.7V ~ 3.6V) is narrower than the original part but overlaps within the 2.5V to 3.6V window. Operating temperature range is -40°C to 85°C, which is acceptable for standard industrial applications. AT24C01D-XHM-T is available in Cut Tape & Digi-Reel packaging with higher inventory (5300 pcs), while AT24C01D-XHM-B is supplied in Tube format (2640 pcs).

Secondary Substitutes (Active Status, Package Variants):

BR24G01FVM-3AGTTR (Rohm Semiconductor) matches the 1 MHz clock frequency and 1Kbit capacity in 8-MSOP package. Supply voltage range (1.6V ~ 5.5V) exceeds the original specification. This part is in active production status.

BR24L01AFVM-WTR and BR24T01FVM-WTR (Rohm Semiconductor) operate at 400 kHz clock frequency in 8-MSOP packages. Both are in active production with high inventory availability (15690 pcs and 15300 pcs respectively). Supply voltage ranges are 1.8V ~ 5.5V and 1.6V ~ 5.5V respectively, both compatible with the original part's operating envelope.

Alternative Substitutes (8-TSSOP Package Variants):

BR24G01FVT-3GE2, BR24L01AFVT-WE2, and BR24T01FVT-WE2 maintain 8-TSSOP packaging with 400 kHz clock frequency. All three are in active production status. These parts are suitable for applications where package footprint matching is critical.

Not Recommended for New Designs:

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

Frequently Asked Questions (FAQ)

Q: Can I substitute AT24C01D-XHM-B for 24LC014H-E/ST in a 5V application?

A: The AT24C01D-XHM-B has a maximum supply voltage of 3.6V, making it unsuitable for 5V-only applications. The original 24LC014H-E/ST supports 2.5V to 5.5V. For 5V applications, use BR24G01FVM-3AGTTR, BR24L01AFVM-WTR, or BR24T01FVM-WTR, which all support up to 5.5V.

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

A: Both are 8-pin surface mount packages with different physical dimensions. 8-TSSOP has a width of 0.173" (4.40mm), while 8-MSOP has a width of 0.110" (2.80mm). The MSOP variant is more compact. Verify PCB layout compatibility before substituting between these package types.

Q: Does the 400 kHz clock frequency of BR24L01AFVM-WTR affect compatibility with 24LC014H-E/ST?

A: No. The 24LC014H-E/ST operates at 1 MHz, but I2C protocol allows lower clock frequencies on the same bus. A 400 kHz device is backward compatible with 1 MHz systems. The bus will operate at the lower frequency when both devices are present.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance certification, matching the original 24LC014H-E/ST specification.

Q: Which substitute has the highest inventory availability?

A: BR24L01AFVM-WTR and BR24T01FVM-WTR both have 15,300+ units in stock, providing the best supply availability among all substitutes.

Q: Can I use BR24L01AFV-WE2 in new product designs?

A: No. BR24L01AFV-WE2 is marked "Not For New Designs." This part is available only for legacy system support and maintenance. Use BR24L01AFVM-WTR or BR24L01AFVT-WE2 for new designs instead.

Q: What is the temperature range difference between the main part and substitutes?

A: The 24LC014H-E/ST operates from -40°C to 125°C (TA). Most substitutes operate from -40°C to 85°C (TA). The narrower range is acceptable for standard industrial and commercial applications but may not be suitable for extended temperature environments requiring operation above 85°C.

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