24LC014-I/ST EEPROM Memory IC Equivalent & Substitute Parts

Part Overview

The 24LC014-I/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 400 kHz I2C clock frequency with 900 ns access time and supports supply voltages from 2.5V to 5.5V across the industrial temperature range of -40°C to 85°C. The part is ROHS3 compliant and carries active product status. Equivalent and substitute parts are identified based on matching memory capacity, interface protocol, package type, and electrical operating parameters to ensure direct functional replacement in circuit applications.

Key Parameters

Parameter	Value
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 ~ 85°C (TA)
Package Type	8-TSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the 24LC014-I/ST is determined by the following critical parameters: memory capacity (1Kbit), memory organization (128 x 8), interface protocol (I2C), package footprint (8-TSSOP or compatible 8-pin surface mount variants), and electrical compatibility within the specified voltage and temperature ranges. Parts are grouped into three categories based on substitution compatibility:

Category 1: Direct Equivalents (Identical Specifications) Parts matching all key parameters including 400 kHz clock frequency, 900 ns access time, 2.5V–5.5V supply range, and 8-TSSOP packaging. These provide pin-for-pin replacement capability.

Category 2: Functional Equivalents (Enhanced Performance) Parts with 1 MHz clock frequency and improved access times (4.6 µs to 550 ns) but with modified voltage supply ranges (1.7V–3.6V or 1.7V–5.5V). These offer higher performance but require voltage compatibility verification in the target application.

Category 3: Package Variants (Alternative Footprints) Parts with identical electrical specifications but different surface mount packages (8-MSOP, 8-SSOP-B, 8-LSSOP) that maintain functional compatibility while accommodating alternative PCB layout requirements.

Parameter Comparison

Part Number	Manufacturer	Memory Size	Clock Frequency	Access Time	Voltage Supply	Package Type	Product Status	MSL Rating
24LC014-I/ST	Microchip Technology	1Kbit	400 kHz	900 ns	2.5V ~ 5.5V	8-TSSOP	Active	1
24LC014T-I/ST	Microchip Technology	1Kbit	400 kHz	900 ns	2.5V ~ 5.5V	8-TSSOP	Active	1
24LC01B-I/ST	Microchip Technology	1Kbit	400 kHz	4.6 µs	2.5V ~ 5.5V	8-TSSOP	Active	1
AT24C01D-XHM-B	Microchip Technology	1Kbit	1 MHz	4.5 µs	1.7V ~ 3.6V	8-TSSOP	Active	3
AT24C01D-XHM-T	Microchip Technology	1Kbit	1 MHz	4.5 µs	1.7V ~ 3.6V	8-TSSOP	Active	1
AT24CS01-XHM-T	Microchip Technology	1Kbit	1 MHz	550 ns	1.7V ~ 5.5V	8-TSSOP	Active	1
BR24G01FVJ-3GTE2	Rohm Semiconductor	1Kbit	400 kHz	Not Specified	1.6V ~ 5.5V	8-TSSOP-BJ	Not For New Designs	1
BR24G01FVM-3AGTTR	Rohm Semiconductor	1Kbit	1 MHz	Not Specified	1.6V ~ 5.5V	8-MSOP	Active	1
BR24G01FVT-3GE2	Rohm Semiconductor	1Kbit	400 kHz	Not Specified	1.6V ~ 5.5V	8-TSSOP-B	Active	1
BR24L01AFV-WE2	Rohm Semiconductor	1Kbit	400 kHz	Not Specified	1.8V ~ 5.5V	8-LSSOP	Not For New Designs	1
BR24L01AFVM-WTR	Rohm Semiconductor	1Kbit	400 kHz	Not Specified	1.8V ~ 5.5V	8-MSOP	Active	1

Engineering Selection Recommendations

For Direct Replacement (No Design Changes Required) Select 24LC014T-I/ST when tape and reel packaging is required. This part maintains identical electrical specifications and 8-TSSOP footprint as the 24LC014-I/ST, differing only in packaging format. Both parts carry active product status and ROHS3 compliance.

For Enhanced Performance Applications AT24CS01-XHM-T provides the widest voltage supply range (1.7V–5.5V) with superior access time (550 ns) and 1 MHz clock frequency capability. This part is suitable for applications requiring higher I2C bus speeds while maintaining compatibility with the original 2.5V–5.5V supply range. MSL rating of 1 indicates unlimited moisture sensitivity protection.

For Alternative Package Requirements BR24L01AFVM-WTR offers 8-MSOP packaging with active product status and verified programmability. This part maintains 400 kHz clock frequency and 1.8V–5.5V supply range, accommodating PCB layouts requiring smaller footprint alternatives to 8-TSSOP.

Parts to Avoid in New Designs BR24G01FVJ-3GTE2 and BR24L01AFV-WE2 carry "Not For New Designs" product status and should not be selected for new circuit development, despite functional compatibility.

Frequently Asked Questions (FAQ)

Q: Can 24LC014T-I/ST replace 24LC014-I/ST directly? A: Yes. Both parts are manufactured by Microchip Technology with identical electrical specifications (1Kbit, 400 kHz I2C, 900 ns access time, 2.5V–5.5V supply). The difference is packaging format: 24LC014T-I/ST is supplied in tape and reel while 24LC014-I/ST is supplied in tube. Pin configuration and footprint are identical.

Q: What is the voltage compatibility difference between 24LC014-I/ST and AT24C01D-XHM-T? A: The 24LC014-I/ST operates at 2.5V–5.5V while AT24C01D-XHM-T operates at 1.7V–3.6V. The AT24C01D-XHM-T cannot be used in applications requiring 5V operation. However, AT24CS01-XHM-T extends the upper voltage limit to 5.5V, making it compatible with 5V systems.

Q: Are Rohm Semiconductor parts (BR24 series) pin-compatible with Microchip 24LC014? A: Yes. All BR24 series parts maintain 1Kbit capacity, I2C interface, and 8-pin surface mount packaging. However, package variants differ: BR24G01FVJ-3GTE2 uses 8-TSSOP-BJ, BR24G01FVM-3AGTTR uses 8-MSOP, and BR24L01AFVM-WTR uses 8-MSOP. Verify PCB footprint compatibility before substitution.

Q: What does MSL rating 1 versus MSL rating 3 mean for substitution? A: MSL (Moisture Sensitivity Level) 1 indicates unlimited moisture protection, while MSL 3 requires baking within 168 hours of opening the package. For applications with standard assembly timelines, MSL 1 parts (24LC014-I/ST, 24LC014T-I/ST, AT24C01D-XHM-T) are preferred. AT24C01D-XHM-B carries MSL 3 and requires moisture control procedures.

Q: Can I use AT24CS01-XHM-T in a 2.5V application? A: Yes. AT24CS01-XHM-T operates across 1.7V–5.5V, which includes the 2.5V minimum of the original 24LC014-I/ST. This part is fully compatible with existing 2.5V–5.5V designs while offering improved performance characteristics.

Q: Why do some substitute parts show "Not Specified" for access time? A: Access time specifications were not provided in the component data for certain Rohm Semiconductor parts. Verify detailed datasheets directly with the manufacturer before selecting these parts for timing-critical applications.

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