24LC014HT-I/SN EEPROM Memory IC Equivalent & Substitute Parts

Part Overview

The 24LC014HT-I/SN is a 1Kbit I2C EEPROM memory IC manufactured by Microchip Technology, supplied in Tape & Reel packaging. This non-volatile memory device operates at 1 MHz clock frequency with 400 ns access time, supporting supply voltages from 2.5V to 5.5V across the industrial temperature range of -40°C to 85°C. The device is ROHS3 compliant and currently in active production status with 1123 units in stock.

Equivalent and substitute parts are necessary when the original part number becomes unavailable, when alternative packaging formats are required for manufacturing processes, or when design flexibility permits operation at reduced clock frequencies while maintaining functional compatibility within the 1Kbit memory organization and I2C interface specification.

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-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the 24LC014HT-I/SN is determined by strict adherence to the following electrical and mechanical parameters:

Critical Parameters (Must Match):

Memory Size: 1Kbit
Memory Organization: 128 x 8
Memory Interface: I2C
Package Type: 8-SOIC (0.154", 3.90mm Width)
Mounting Type: Surface Mount

Allowable Variation Parameters:

Clock Frequency: 1 MHz (primary) or 400 kHz (reduced speed operation acceptable)
Access Time: 400 ns (primary) or higher values acceptable (900 ns, 4.6 µs, 4.5 µs, 550 ns)
Voltage Supply Range: 2.5V ~ 5.5V (primary) or wider ranges acceptable (1.7V ~ 5.5V, 1.7V ~ 3.6V)
Operating Temperature: -40°C ~ 85°C (primary) or -40°C ~ 125°C (extended range acceptable)
Packaging Format: Tape & Reel (primary), Cut Tape, Tube, or Bulk acceptable

Substitutes are grouped by clock frequency capability: 1 MHz operation (direct electrical equivalents) and 400 kHz operation (reduced frequency alternatives).

Parameter Comparison

Part Number	Manufacturer	Memory Size	Clock Frequency	Access Time	Voltage Supply	Operating Temp	Package	Packaging Format	Product Status	Inventory
24LC014HT-I/SN	Microchip	1Kbit	1 MHz	400 ns	2.5V ~ 5.5V	-40°C ~ 85°C	8-SOIC	Tape & Reel	Active	1123
24LC014H-I/SN	Microchip	1Kbit	1 MHz	400 ns	2.5V ~ 5.5V	-40°C ~ 85°C	8-SOIC	Tube	Active	2197
24AA014HT-I/SN	Microchip	1Kbit	400 kHz	900 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-SOIC	Tape & Reel	Active	2177
24AA01T-I/SN	Microchip	1Kbit	400 kHz	3500 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-SOIC	Cut Tape & Digi-Reel	Active	18996
24LC014T-I/SN	Microchip	1Kbit	400 kHz	900 ns	2.5V ~ 5.5V	-40°C ~ 85°C	8-SOIC	Cut Tape & Digi-Reel	Active	1900
24LC01BHT-I/SN	Microchip	1Kbit	400 kHz	900 ns	2.5V ~ 5.5V	-40°C ~ 85°C	8-SOIC	Tape & Reel	Active	4348
24LC01BT-E/SN	Microchip	1Kbit	400 kHz	4.6 µs	2.5V ~ 5.5V	-40°C ~ 125°C	8-SOIC	Cut Tape & Digi-Reel	Active	3200
24LC01BT-I/SN	Microchip	1Kbit	400 kHz	4.6 µs	2.5V ~ 5.5V	-40°C ~ 85°C	8-SOIC	Cut Tape & Digi-Reel	Active	16688
AT24C01D-SSHM-B	Microchip	1Kbit	1 MHz	4.5 µs	1.7V ~ 3.6V	-40°C ~ 85°C	8-SOIC	Bulk	Active	3100
AT24C01D-SSHM-T	Microchip	1Kbit	1 MHz	4.5 µs	1.7V ~ 3.6V	-40°C ~ 85°C	8-SOIC	Cut Tape & Digi-Reel	Active	11150
AT24CS01-SSHM-B	Microchip	1Kbit	1 MHz	550 ns	1.7V ~ 5.5V	-40°C ~ 85°C	8-SOIC	Tube	Active	2703

Engineering Selection Recommendations

Direct Electrical Equivalents (1 MHz Operation):

The 24LC014H-I/SN in Tube packaging provides identical electrical specifications to the primary part with alternative packaging format. The AT24CS01-SSHM-B offers 1 MHz operation with wider voltage supply range (1.7V ~ 5.5V) and faster access time (550 ns), suitable for applications requiring extended supply voltage tolerance. The AT24C01D-SSHM series operates at 1 MHz with 4.5 µs access time but operates within narrower voltage range (1.7V ~ 3.6V), requiring verification of supply voltage compatibility in target application.

Reduced Frequency Alternatives (400 kHz Operation):

The 24AA014HT-I/SN, 24LC014T-I/SN, and 24LC01BHT-I/SN provide 400 kHz operation with 900 ns access time. The 24AA01T-I/SN offers highest inventory availability (18996 units) with 400 kHz operation and 3500 ns access time. The 24LC01BT-E/SN and 24LC01BT-I/SN support extended operating temperature to 125°C with 400 kHz operation and 4.6 µs access time.

All substitute parts maintain ROHS3 compliance and active product status. Selection should be based on packaging format requirements, clock frequency tolerance of the application circuit, and supply voltage constraints.

Frequently Asked Questions (FAQ)

Q: Can I substitute a 400 kHz part for the 1 MHz 24LC014HT-I/SN?

A: Yes, if your application circuit tolerates reduced clock frequency. The 400 kHz variants (24AA014HT-I/SN, 24LC014T-I/SN, 24LC01BHT-I/SN) maintain identical memory organization (128 x 8), I2C interface, and package type. Verify that your I2C master controller can operate at 400 kHz and that system timing requirements do not mandate 1 MHz operation.

Q: What is the difference between packaging formats (Tape & Reel, Cut Tape, Tube, Bulk)?

A: Packaging format affects manufacturing process compatibility. Tape & Reel and Cut Tape formats support automated pick-and-place assembly. Tube packaging suits manual assembly or lower-volume production. Bulk packaging is used for high-volume reel processing. Electrical specifications remain identical across all packaging formats for the same part number base.

Q: Are AT24C01D and AT24CS01 parts compatible with the 24LC014HT-I/SN?

A: Both AT24 series parts maintain 1Kbit memory size, 128 x 8 organization, I2C interface, and 8-SOIC package. However, AT24C01D operates within 1.7V ~ 3.6V supply range, requiring verification that your application does not exceed 3.6V. AT24CS01-SSHM-B supports 1.7V ~ 5.5V range and is compatible with standard 5V systems.

Q: Which substitute offers the best availability?

A: The 24AA01T-I/SN provides highest inventory (18996 units) with 400 kHz operation. For 1 MHz operation, AT24C01D-SSHM-T offers 11150 units. For Tape & Reel packaging matching the original format, 24LC01BHT-I/SN provides 4348 units.

Q: Can I use a part with extended temperature range (-40°C ~ 125°C) in place of the standard range (-40°C ~ 85°C)?

A: Yes. Extended temperature range parts (24LC01BT-E/SN) are backward compatible with applications requiring only standard temperature range. No design changes are required; the part simply provides additional thermal margin.

Q: What is the significance of access time differences (400 ns vs. 4.6 µs)?

A: Access time defines the delay from I2C address/command transmission to data availability. Faster access time (400 ns) supports higher-speed I2C operations. Slower access time (4.6 µs, 3500 ns) is acceptable for standard 400 kHz I2C bus operation. Verify that your I2C timing budget accommodates the substitute part's access time specification.

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