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

Part Overview

The 24LC014HT-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 product status with 980 units in stock.

Substitute parts become necessary when the primary part reaches end-of-life status, inventory constraints occur, or design requirements necessitate alternative packaging formats or electrical specifications. The substitute parts listed maintain functional equivalence through identical memory capacity (1Kbit), organization (128 x 8), interface protocol (I2C), and write cycle time (5ms), while accommodating variations in clock frequency, supply voltage ranges, operating temperature limits, and package types.

Substiute Parts

24LC014HT-E/ST

Microchip TechnologyIn Stock: 105824LC014HT-E/ST Datasheet

Current PartRFQ

AT24C01D-XHM-B

Microchip TechnologyIn Stock: 2661AT24C01D-XHM-B Datasheet

MFR RecommendedRFQ

AT24C01D-XHM-T

Microchip TechnologyIn Stock: 5351AT24C01D-XHM-T Datasheet

MFR RecommendedRFQ

BR24G01FVJ-3GTE2

Rohm SemiconductorIn Stock: 5015BR24G01FVJ-3GTE2 Datasheet

MFR RecommendedRFQ

BR24G01FVM-3AGTTR

Rohm SemiconductorIn Stock: 3898BR24G01FVM-3AGTTR Datasheet

MFR RecommendedRFQ

BR24G01FVT-3GE2

Rohm SemiconductorIn Stock: 1212BR24G01FVT-3GE2 Datasheet

MFR RecommendedRFQ

BR24L01AFV-WE2

Rohm SemiconductorIn Stock: 3507BR24L01AFV-WE2 Datasheet

MFR RecommendedRFQ

BR24L01AFVM-WTR

Rohm SemiconductorIn Stock: 15717BR24L01AFVM-WTR Datasheet

MFR RecommendedRFQ

BR24L01AFVT-WE2

ROHM SemiconductorIn Stock: 5932BR24L01AFVT-WE2 Datasheet

MFR RecommendedRFQ

BR24T01FVM-WTR

Rohm SemiconductorIn Stock: 15362BR24T01FVM-WTR Datasheet

MFR RecommendedRFQ

BR24T01FVT-WE2

Rohm SemiconductorIn Stock: 1349BR24T01FVT-WE2 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict adherence to the following core parameters:

Mandatory Equivalence Parameters:

• Memory Size: 1Kbit (all substitutes)
• Memory Organization: 128 x 8 (all substitutes)
• Memory Interface: I2C (all substitutes)
• Write Cycle Time: 5ms (all substitutes)
• Mounting Type: Surface Mount (all substitutes)
• RoHS Status: ROHS3 Compliant (all substitutes)

Variable Parameters Allowing Substitution:

• Clock Frequency: 400 kHz or 1 MHz (lower frequency remains compatible with 1 MHz designs)
• Supply Voltage Range: Minimum 1.6V to 2.5V; Maximum 3.6V to 5.5V (substitutes with wider or overlapping ranges are acceptable)
• Operating Temperature: -40°C to 85°C or -40°C to 125°C (narrower range acceptable if application requirements are met)
• Package Format: 8-TSSOP, 8-MSOP, 8-LSSOP (all are surface mount 8-pin variants with compatible pinouts)
• Packaging Type: Tape & Reel, Cut Tape, or Tube (logistics variation only)

Substitutes are grouped by manufacturer (Microchip Technology and Rohm Semiconductor) and by package type compatibility. All listed substitutes maintain full functional compatibility with the 24LC014HT-E/ST within their specified electrical and thermal operating ranges.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Active Status, Microchip Technology):

AT24C01D-XHM-B and AT24C01D-XHM-T are direct functional equivalents manufactured by Microchip Technology with active product status. Both maintain 1 MHz clock frequency and 1Kbit capacity. The primary design consideration is the reduced supply voltage range (1.7V ~ 3.6V versus 2.5V ~ 5.5V) and narrower operating temperature range (-40°C ~ 85°C versus -40°C ~ 125°C). These parts are suitable for applications operating within these electrical and thermal boundaries. AT24C01D-XHM-T offers higher inventory availability (5300 units) compared to AT24C01D-XHM-B (2640 units).

Secondary Substitutes (Active Status, Rohm Semiconductor):

BR24G01FVM-3AGTTR maintains 1 MHz clock frequency with active product status and wide supply voltage range (1.6V ~ 5.5V). The package format is 8-MSOP rather than 8-TSSOP, requiring PCB layout modification. BR24L01AFVM-WTR and BR24T01FVM-WTR operate at 400 kHz clock frequency with active status and 8-MSOP packaging. These parts are suitable for applications where lower clock frequency is acceptable and PCB layout accommodates MSOP footprint.

8-TSSOP Package Alternatives (Active Status):

BR24G01FVT-3GE2, BR24L01AFVT-WE2, and BR24T01FVT-WE2 maintain the 8-TSSOP package format compatible with the original part. All three are active products with 400 kHz clock frequency. BR24G01FVT-3GE2 offers the widest supply voltage range (1.6V ~ 5.5V). BR24L01AFVT-WE2 and BR24T01FVT-WE2 support 1.8V ~ 5.5V and 1.6V ~ 5.5V respectively.

Parts Not Recommended for New Designs:

BR24G01FVJ-3GTE2 and BR24L01AFV-WE2 carry "Not For New Designs" status and should not be selected for new product development, regardless of functional compatibility.

Frequently Asked Questions (FAQ)

Q: Can I substitute the 24LC014HT-E/ST with a part operating at 400 kHz instead of 1 MHz?

A: Yes. The 400 kHz clock frequency is a lower operating speed that remains compatible with I2C bus designs specified for 1 MHz operation. The I2C protocol supports multiple clock frequencies, and a slower device will function correctly on a faster bus. However, the application must not require the higher data transfer rate of 1 MHz.

Q: What is the impact of the reduced supply voltage range in AT24C01D parts (1.7V ~ 3.6V)?

A: The AT24C01D series has a narrower supply voltage window compared to the 24LC014HT-E/ST (2.5V ~ 5.5V). Substitution is valid only if your circuit design operates entirely within the 1.7V ~ 3.6V range. If your application requires operation at 5V or uses 2.5V as a minimum, the AT24C01D is not suitable.

Q: Are 8-MSOP and 8-TSSOP packages interchangeable?

A: No. While both are 8-pin surface mount packages, they have different physical dimensions and pinout footprints. 8-MSOP (0.110" width) is narrower than 8-TSSOP (0.173" width). PCB layout and solder paste stencil must be redesigned to accommodate the different package. Pin assignments are identical, but the physical footprint is not compatible without PCB modification.

Q: Why do some substitute parts not specify access time?

A: Access time specifications are not provided in the manufacturer data for certain Rohm Semiconductor parts in this reference. The 5ms write cycle time is specified for all parts and is the critical timing parameter for EEPROM write operations. Access time (read latency) is typically faster than write cycle time and does not affect substitution eligibility when write cycle time is identical.

Q: Can I use BR24G01FVJ-3GTE2 or BR24L01AFV-WE2 in a new design?

A: No. Both parts carry "Not For New Designs" product status, indicating the manufacturer has discontinued active support for new applications. These parts may be used only for legacy product maintenance or repair of existing designs. For new development, select only parts with "Active" product status.

Q: What is the significance of the operating temperature range difference (-40°C ~ 125°C versus -40°C ~ 85°C)?

A: The 24LC014HT-E/ST supports operation up to 125°C, while most substitute parts are rated to 85°C maximum. If your application requires operation above 85°C, only the 24LC014HT-E/ST meets the specification. For applications with maximum operating temperature of 85°C or below, the narrower range is not a limitation.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed carry ROHS3 compliance certification, matching the compliance status of the 24LC014HT-E/ST. All parts are also REACH unaffected and classified as EAR99 for export control purposes.