Equivalent & Substitute Parts for 24LC014HT-E/SN

Part Overview

The 24LC014HT-E/SN is a 1Kbit EEPROM memory IC manufactured by Microchip Technology, featuring I2C interface operation at 1 MHz clock frequency. This device is designed for non-volatile data storage applications requiring low-power, serial communication in embedded systems. The part is currently in active product status with 1145 units in stock. Substitute parts are necessary to address supply chain variations, packaging preferences, operational temperature requirements, and voltage supply specifications across different application environments.

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 ~ 125°C
Package Type	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the 24LC014HT-E/SN is determined by the following critical parameters:

Core Functional Parameters (Must Match):

Memory Size: 1Kbit
Memory Organization: 128 x 8
Memory Interface: I2C
Write Cycle Time: 5ms

Operational Parameters (Must Be Compatible):

Clock Frequency: 1 MHz or lower (backward compatible)
Access Time: Must not exceed application timing requirements
Voltage Supply Range: Must encompass or overlap with 2.5V ~ 5.5V
Operating Temperature: Must cover or exceed -40°C ~ 125°C range

Physical Parameters (Package Compatibility):

Package Type: 8-SOIC or equivalent footprint (0.154" to 0.173" width acceptable)
Mounting Type: Surface Mount

Substitute parts are grouped into two categories: direct equivalents operating at 1 MHz clock frequency, and compatible alternatives operating at 400 kHz with extended voltage or temperature specifications. Parts with lower clock frequencies remain functionally compatible due to I2C protocol backward compatibility.

Parameter Comparison

Part Number	Manufacturer	Memory Size	Clock Frequency	Access Time	Voltage Supply	Operating Temperature	Package	Inventory
24LC014HT-E/SN	Microchip Technology	1Kbit	1 MHz	400 ns	2.5V ~ 5.5V	-40°C ~ 125°C	8-SOIC (3.90mm)	1145
24LC01BT-E/SN	Microchip Technology	1Kbit	400 kHz	4.6 µs	2.5V ~ 5.5V	-40°C ~ 125°C	8-SOIC (3.90mm)	3200
AT24C01D-SSHM-B	Microchip Technology	1Kbit	1 MHz	4.5 µs	1.7V ~ 3.6V	-40°C ~ 85°C	8-SOIC (3.90mm)	3100
AT24C01D-SSHM-T	Microchip Technology	1Kbit	1 MHz	4.5 µs	1.7V ~ 3.6V	-40°C ~ 85°C	8-SOIC (3.90mm)	11150
BR24A01AF-WLBH2	Rohm Semiconductor	1Kbit	400 kHz	Not specified	2.5V ~ 5.5V	-40°C ~ 105°C	8-SOP (4.40mm)	863
BR24A01AF-WME2	Rohm Semiconductor	1Kbit	400 kHz	Not specified	2.5V ~ 5.5V	-40°C ~ 105°C	8-SOP (4.40mm)	1795
BR24A01AFJ-WME2	Rohm Semiconductor	1Kbit	400 kHz	Not specified	2.5V ~ 5.5V	-40°C ~ 105°C	8-SOP-J (3.90mm)	3900
BR24G01F-3GTE2	Rohm Semiconductor	1Kbit	400 kHz	Not specified	1.6V ~ 5.5V	-40°C ~ 85°C	8-SOP (4.40mm)	2060
BR24L01AF-WE2	Rohm Semiconductor	1Kbit	400 kHz	Not specified	1.8V ~ 5.5V	-40°C ~ 85°C	8-SOP (4.40mm)	28200
BR24T01F-WE2	Rohm Semiconductor	1Kbit	400 kHz	Not specified	1.6V ~ 5.5V	-40°C ~ 85°C	8-SOP (4.40mm)	2900
M24C01-RMN6TP	STMicroelectronics	1Kbit	400 kHz	900 ns	1.8V ~ 5.5V	-40°C ~ 85°C	8-SOIC (3.90mm)	1807

Engineering Selection Recommendations

Direct Equivalents (1 MHz Operation): AT24C01D-SSHM-T and AT24C01D-SSHM-B are functionally equivalent at 1 MHz clock frequency with verified DiGi-Electronics programmability status. Both parts maintain the same memory organization and I2C interface. AT24C01D-SSHM-T offers significantly higher inventory (11150 units) compared to the main part. These parts operate within a reduced voltage range (1.7V ~ 3.6V) and narrower temperature range (-40°C ~ 85°C), requiring verification that application requirements fall within these specifications.

Compatible Alternatives (400 kHz Operation): 24LC01BT-E/SN, BR24A01AF-WME2, BR24A01AF-WLBH2, BR24A01AFJ-WME2, BR24G01F-3GTE2, BR24L01AF-WE2, BR24T01F-WE2, and M24C01-RMN6TP operate at 400 kHz clock frequency. These parts maintain full I2C protocol compatibility and identical memory capacity. Selection among these alternatives depends on voltage supply requirements, operating temperature range, and package footprint constraints.

Voltage Supply Considerations: The main part operates across 2.5V ~ 5.5V. Microchip AT24C01D variants operate at 1.7V ~ 3.6V, requiring application voltage verification. Rohm BR24G01F-3GTE2 and BR24T01F-WE2 support extended low-voltage operation (1.6V minimum). BR24L01AF-WE2 supports 1.8V minimum. M24C01-RMN6TP supports 1.8V ~ 5.5V.

Temperature Range Considerations: The main part operates across -40°C ~ 125°C. Most substitute parts operate within -40°C ~ 85°C, which is acceptable for standard industrial applications but may not cover extended temperature requirements. BR24A01AF-WLBH2 and BR24A01AF-WME2 extend to -40°C ~ 105°C.

Packaging and Footprint: The main part uses 8-SOIC package (0.154", 3.90mm width). Rohm parts use 8-SOP package (0.173", 4.40mm width) except BR24A01AFJ-WME2 which uses 8-SOP-J (0.154", 3.90mm width). Microchip and STMicroelectronics parts maintain 8-SOIC footprint compatibility. Verify PCB layout compatibility for Rohm 8-SOP variants with wider body width.

Compliance and Certification: All listed parts are ROHS3 compliant and REACH unaffected. BR24A01AF-WME2 and BR24A01AFJ-WME2 carry AEC-Q100 automotive qualification. Selection of automotive-qualified parts is necessary only for automotive applications.

Frequently Asked Questions (FAQ)

Q: Can 400 kHz parts replace the 1 MHz main part? A: Yes. I2C protocol supports backward compatibility. A 400 kHz device operates correctly in a 1 MHz system, though communication occurs at the lower speed. This is functionally transparent to the application if timing requirements are met.

Q: What is the difference between 8-SOIC and 8-SOP packages? A: Both are 8-pin surface mount packages with identical pin pitch (1.27mm). The primary difference is body width: 8-SOIC is 3.90mm wide, while 8-SOP is 4.40mm wide (except 8-SOP-J variant at 3.90mm). Verify PCB footprint compatibility before substitution.

Q: Are AT24C01D parts suitable for 5V applications? A: No. AT24C01D variants operate within 1.7V ~ 3.6V range and are not suitable for 5V systems. The main part and most Rohm alternatives support full 5V operation.

Q: Which substitute offers the best inventory availability? A: BR24L01AF-WE2 offers the highest inventory at 28200 units, followed by AT24C01D-SSHM-T at 11150 units.

Q: Can I use a part with a narrower temperature range? A: Only if your application operates within the narrower range. The main part covers -40°C ~ 125°C. Most substitutes cover -40°C ~ 85°C. Verify your system's actual operating temperature before substitution.

Q: What does "verified" DiGi-Electronics programmability mean? A: Verified status indicates the part has been tested and confirmed compatible with DiGi-Electronics programming equipment. Non-verified parts may still be functionally compatible but have not undergone this specific validation.

Q: Are Rohm automotive-qualified parts necessary for non-automotive applications? A: No. AEC-Q100 qualification is specific to automotive requirements. For non-automotive applications, standard parts are appropriate.

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