24LC01BHT-I/MS Equivalent & Substitute Parts

Part Overview

The 24LC01BHT-I/MS is a 1Kbit EEPROM memory IC with I2C interface operating at 400 kHz, manufactured by Microchip Technology. This non-volatile memory device is housed in an 8-MSOP surface mount package and is designed for applications requiring low-capacity serial EEPROM storage with standard I2C protocol support.

The product maintains Active status with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified based on matching core electrical parameters: 1Kbit memory capacity, 128 x 8 organization, I2C interface, 400 kHz clock frequency, 5ms write cycle time, 2.5V to 5.5V supply voltage range, and -40°C to 85°C operating temperature range.

Key Parameters

Parameter	Value
Memory Size	1Kbit
Memory Organization	128 x 8
Memory Interface	I2C
Clock Frequency	400 kHz
Write Cycle Time	5ms
Access Time	900 ns
Voltage Supply Range	2.5V ~ 5.5V
Operating Temperature	-40°C ~ 85°C
Package Type	8-MSOP
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict parameter matching across the following critical specifications:

Electrical Parameters (Must Match):

Memory capacity: 1Kbit
Memory organization: 128 x 8
Interface protocol: I2C
Clock frequency: 400 kHz
Write cycle time: 5ms
Supply voltage range: 2.5V ~ 5.5V minimum
Operating temperature range: -40°C ~ 85°C

Mechanical Parameters (Must Match):

Package type: 8-MSOP or 8-TSSOP (equivalent footprints)
Surface mount mounting type

Compliance Parameters:

RoHS3 compliance required
MSL rating: 1 (Unlimited)

Substitute parts are grouped into two categories: MFR Recommended substitutes (verified by manufacturer) and Parametric Equivalents (matching all core electrical and mechanical specifications).

Parameter Comparison

Parameter	24LC01BHT-I/MS	24LC01BT-I/MS	24LC014T-I/MS	BR24G01FVJ-3GTE2	BR24G01FVM-3AGTTR
Manufacturer	Microchip Technology	Microchip Technology	Microchip Technology	Rohm Semiconductor	Rohm Semiconductor
Memory Size	1Kbit	1Kbit	1Kbit	1Kbit	1Kbit
Memory Organization	128 x 8	128 x 8	128 x 8	128 x 8	128 x 8
Memory Interface	I2C	I2C	I2C	I2C	I2C
Clock Frequency	400 kHz	400 kHz	400 kHz	400 kHz	1 MHz
Write Cycle Time	5ms	5ms	5ms	5ms	5ms
Access Time	900 ns	4.6 µs	900 ns	Not specified	Not specified
Voltage Supply Range	2.5V ~ 5.5V	2.5V ~ 5.5V	2.5V ~ 5.5V	1.6V ~ 5.5V	1.6V ~ 5.5V
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Package Type	8-MSOP	8-MSOP	8-MSOP	8-TSSOP	8-MSOP
Product Status	Active	Active	Active	Not For New Designs	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Primary Substitutes (Active Status, MFR Recommended):

24LC01BT-I/MS and 24LC014T-I/MS are direct substitutes from Microchip Technology with Active product status. Both maintain identical electrical specifications to the 24LC01BHT-I/MS across memory capacity, interface protocol, supply voltage, and operating temperature. The 24LC01BT-I/MS is supplied in Tape & Reel packaging with verified DiGi-Electronics programmability. The 24LC014T-I/MS offers equivalent performance with verified programmability status and higher inventory availability (2420 Pcs).

Secondary Substitutes (Rohm Semiconductor):

BR24G01FVJ-3GTE2 is a Rohm Semiconductor equivalent with matching 1Kbit capacity and I2C 400 kHz interface. This part carries "Not For New Designs" status and should be used only for legacy system maintenance or replacement applications. The 8-TSSOP package is mechanically compatible with 8-MSOP footprints in standard PCB layouts.

BR24G01FVM-3AGTTR is an Active-status Rohm alternative with enhanced I2C clock frequency of 1 MHz, providing backward compatibility at 400 kHz operation. The extended supply voltage range (1.6V ~ 5.5V) offers broader application flexibility compared to the 2.5V minimum of the main part.

Selection Criteria:

For new designs, select from Microchip Technology parts (24LC01BT-I/MS or 24LC014T-I/MS) to ensure Active product status and long-term availability. For legacy system support, BR24G01FVJ-3GTE2 remains available despite "Not For New Designs" designation. BR24G01FVM-3AGTTR is suitable for applications requiring lower supply voltage operation or higher I2C clock frequency capability.

Frequently Asked Questions (FAQ)

Q: Can 24LC01BT-I/MS replace 24LC01BHT-I/MS directly?

A: Yes. Both parts share identical electrical specifications: 1Kbit capacity, 128 x 8 organization, I2C 400 kHz interface, 5ms write cycle, 2.5V to 5.5V supply range, and -40°C to 85°C operating temperature. The primary difference is packaging format (Tape & Reel vs. standard). Pin configuration and functional behavior are equivalent.

Q: What is the difference between 24LC01BT-I/MS and 24LC014T-I/MS?

A: Both are Microchip 1Kbit I2C EEPROM devices with identical memory capacity and interface specifications. The 24LC014T-I/MS maintains 900 ns access time matching the original part, while 24LC01BT-I/MS specifies 4.6 µs access time. Both meet the 5ms write cycle requirement. Selection depends on access time criticality in the application.

Q: Are Rohm BR24G01 parts compatible with Microchip 24LC01 devices?

A: Yes, within specified parameter ranges. BR24G01FVJ-3GTE2 and BR24G01FVM-3AGTTR maintain 1Kbit capacity, 128 x 8 organization, I2C protocol, and 5ms write cycle time. BR24G01FVJ-3GTE2 operates at 400 kHz (matching the original), while BR24G01FVM-3AGTTR supports 1 MHz operation. Both support the -40°C to 85°C temperature range. Pin-to-pin compatibility exists for standard I2C bus applications.

Q: Can BR24G01FVM-3AGTTR operate at 400 kHz like the original part?

A: Yes. BR24G01FVM-3AGTTR supports I2C clock frequencies up to 1 MHz, which includes backward-compatible operation at 400 kHz. The part will function correctly in systems designed for 400 kHz I2C bus speed.

Q: What is the significance of "Not For New Designs" status on BR24G01FVJ-3GTE2?

A: This designation indicates the manufacturer (Rohm Semiconductor) is not recommending this part for new product development. It remains available for replacement and legacy system support. For new designs, select from Active-status alternatives: 24LC01BT-I/MS, 24LC014T-I/MS, or BR24G01FVM-3AGTTR.

Q: Are package differences between 8-MSOP and 8-TSSOP significant for substitution?

A: Both packages are surface mount with equivalent pin pitch and footprint compatibility in standard PCB designs. 8-MSOP and 8-TSSOP are mechanically interchangeable for I2C EEPROM applications. Verify PCB layout accommodates the specific package outline if space constraints exist.

Q: Do all substitute parts maintain ROHS3 compliance?

A: Yes. All listed substitutes (24LC01BT-I/MS, 24LC014T-I/MS, BR24G01FVJ-3GTE2, BR24G01FVM-3AGTTR) are ROHS3 compliant with MSL rating of 1 (Unlimited), matching the original 24LC01BHT-I/MS specifications.

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