Equivalent & Substitute Parts for 24LC014H-I/ST

Part Overview

The 24LC014H-I/ST is a 1Kbit EEPROM memory IC manufactured by Microchip Technology, featuring I2C interface with 1 MHz clock frequency and 400 ns access time. This device is classified as Active product status and is ROHS3 compliant. The part is packaged in 8-TSSOP surface mount configuration with supply voltage range of 2.5V to 5.5V and operating temperature range of -40°C to 85°C.

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 characteristics within acceptable parameters.

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 ~ 85°C
Package Type	8-TSSOP
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following criteria:

Core Compatibility Requirements:

Memory Size: 1Kbit (128 x 8 organization)
Memory Interface: I2C protocol
Package Type: 8-TSSOP or compatible surface mount packages
Write Cycle Time: 5ms
RoHS Compliance: ROHS3 Compliant

Performance Parameters (Flexible Within Limits):

Clock Frequency: 400 kHz to 1 MHz acceptable
Access Time: 400 ns to 550 ns acceptable
Voltage Supply Range: Minimum 1.6V to 2.5V; Maximum 3.6V to 5.5V
Operating Temperature: -40°C to 85°C

Substitute parts are grouped into two categories: direct electrical equivalents with identical clock frequency (1 MHz) and functional equivalents with reduced clock frequency (400 kHz) that maintain full I2C compatibility and identical memory capacity.

Parameter Comparison

Part Number	Manufacturer	Memory Size	Clock Frequency	Access Time	Voltage Supply	Package	Product Status
24LC014H-I/ST	Microchip Technology	1Kbit	1 MHz	400 ns	2.5V ~ 5.5V	8-TSSOP	Active
24LC01B-I/ST	Microchip Technology	1Kbit	400 kHz	4.6 µs	2.5V ~ 5.5V	8-TSSOP	Active
AT24C01D-XHM-B	Microchip Technology	1Kbit	1 MHz	4.5 µs	1.7V ~ 3.6V	8-TSSOP	Active
AT24C01D-XHM-T	Microchip Technology	1Kbit	1 MHz	4.5 µs	1.7V ~ 3.6V	8-TSSOP	Active
AT24CS01-XHM-T	Microchip Technology	1Kbit	1 MHz	550 ns	1.7V ~ 5.5V	8-TSSOP	Active
BR24G01FVJ-3GTE2	Rohm Semiconductor	1Kbit	400 kHz	Not Specified	1.6V ~ 5.5V	8-TSSOP	Not For New Designs
BR24G01FVM-3AGTTR	Rohm Semiconductor	1Kbit	1 MHz	Not Specified	1.6V ~ 5.5V	8-MSOP	Active
BR24G01FVT-3GE2	Rohm Semiconductor	1Kbit	400 kHz	Not Specified	1.6V ~ 5.5V	8-TSSOP	Active
BR24L01AFV-WE2	Rohm Semiconductor	1Kbit	400 kHz	Not Specified	1.8V ~ 5.5V	8-LSSOP	Not For New Designs
BR24L01AFVM-WTR	Rohm Semiconductor	1Kbit	400 kHz	Not Specified	1.8V ~ 5.5V	8-MSOP	Active
BR24L01AFVT-WE2	Rohm Semiconductor	1Kbit	400 kHz	Not Specified	1.8V ~ 5.5V	8-TSSOP	Active

Engineering Selection Recommendations

Primary Substitutes (Active Status, Identical Clock Frequency):

AT24C01D-XHM-T and AT24C01D-XHM-B are direct functional equivalents operating at 1 MHz clock frequency with identical memory capacity and I2C interface. Both parts are Active status and ROHS3 compliant. The voltage supply range difference (1.7V ~ 3.6V versus 2.5V ~ 5.5V) must be evaluated against system requirements. AT24C01D-XHM-T is available in Cut Tape packaging with higher inventory (5300 pcs).

AT24CS01-XHM-T operates at 1 MHz with extended voltage supply range (1.7V ~ 5.5V) and is Active status. This part offers the widest voltage compatibility and highest inventory availability (25400 pcs).

Secondary Substitutes (Active Status, Reduced Clock Frequency):

24LC01B-I/ST is an Active status Microchip part operating at 400 kHz with identical voltage range (2.5V ~ 5.5V) and 8-TSSOP package. This part is suitable for applications where reduced clock frequency is acceptable.

BR24G01FVM-3AGTTR (Rohm Semiconductor) operates at 1 MHz but uses 8-MSOP package instead of 8-TSSOP. This part is Active status with voltage range 1.6V ~ 5.5V and 3881 pcs inventory.

BR24L01AFVM-WTR (Rohm Semiconductor) operates at 400 kHz in 8-MSOP package with Active status and highest inventory among Rohm parts (15690 pcs).

Not Recommended for New Designs:

BR24G01FVJ-3GTE2 and BR24L01AFV-WE2 are marked as Not For New Designs and should not be selected for new applications.

Frequently Asked Questions (FAQ)

Q: Can I substitute 24LC014H-I/ST with a 400 kHz clock frequency part?

A: Yes, if your application does not require 1 MHz clock speed. Parts like 24LC01B-I/ST, BR24G01FVT-3GE2, and BR24L01AFVT-WE2 operate at 400 kHz with identical 1Kbit memory capacity and I2C interface. Verify that your system timing requirements accommodate the reduced clock frequency.

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

A: Both are surface mount packages with 8 pins. 8-TSSOP has 0.173" width (4.40mm), while 8-MSOP has 0.110" width (2.80mm). Package selection depends on PCB layout constraints and manufacturing equipment capabilities. Electrical functionality is identical.

Q: Are all substitute parts ROHS3 compliant?

A: Yes, all listed substitute parts are ROHS3 compliant and REACH unaffected, matching the compliance status of the primary part.

Q: Which substitute has the best availability?

A: AT24CS01-XHM-T has the highest inventory at 25400 pcs. This part is Active status, operates at 1 MHz, and supports the widest voltage range (1.7V ~ 5.5V).

Q: Can I use AT24C01D-XHM-B instead of AT24C01D-XHM-T?

A: Both parts are electrically identical with 1 MHz clock frequency and 1Kbit capacity. The difference is packaging: AT24C01D-XHM-B is supplied in Tube packaging (1349 pcs inventory), while AT24C01D-XHM-T is supplied in Cut Tape & Digi-Reel format (5300 pcs inventory). Select based on your manufacturing process requirements.

Q: What voltage range must I verify before substitution?

A: The primary part operates at 2.5V ~ 5.5V. Substitute parts have varying ranges: AT24C01D variants support 1.7V ~ 3.6V, AT24CS01-XHM-T supports 1.7V ~ 5.5V, and Rohm parts support 1.6V ~ 5.5V or 1.8V ~ 5.5V. Ensure your system voltage falls within the substitute part's specified range.

Q: Are Rohm parts suitable replacements?

A: Rohm parts (BR24G01 and BR24L01 series) are functionally compatible with identical 1Kbit memory and I2C interface. Most are Active status with good availability. Package options differ (8-TSSOP, 8-MSOP, 8-LSSOP), so verify PCB compatibility. BR24G01FVJ-3GTE2 and BR24L01AFV-WE2 are Not For New Designs and should be avoided.

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