Equivalent & Substitute Parts for 24VL014T/ST

Part Overview

The 24VL014T/ST is a 1Kbit EEPROM memory IC manufactured by Microchip Technology, featuring I2C interface with 400 kHz clock frequency and 900 ns access time. Packaged in 8-TSSOP surface mount configuration with tape and reel delivery, this component operates across 1.5V to 3.6V supply voltage range and -20°C to 85°C temperature range. The part maintains active product status with ROHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are necessary to address packaging preferences, extended temperature ranges, higher clock frequencies, or alternative manufacturer sourcing while maintaining functional equivalence in 1Kbit I2C EEPROM applications.

Key Parameters

Parameter	24VL014T/ST
Memory Size	1Kbit
Memory Format	EEPROM
Memory Organization	128 x 8
Interface	I2C
Clock Frequency	400 kHz
Access Time	900 ns
Write Cycle Time	5ms
Supply Voltage	1.5V ~ 3.6V
Operating Temperature	-20°C ~ 85°C
Package	8-TSSOP
Mounting Type	Surface Mount
Product Status	Active
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the 24VL014T/ST is determined by the following critical parameters: memory size (1Kbit), memory format (EEPROM), memory organization (128 x 8), interface type (I2C), and surface mount package compatibility. Parts are grouped into three categories based on functional and operational characteristics:

Category 1: Direct Functional Equivalents (Packaging Variant) Parts maintaining identical electrical specifications with alternative packaging formats. The 24VL014/ST differs only in packaging (Tube vs. Tape & Reel) while preserving all electrical parameters.

Category 2: Enhanced Performance Variants (Higher Clock Frequency) Parts with 1 MHz clock frequency instead of 400 kHz, offering faster I2C operation. These include AT24C01D-XHM-B and AT24C01D-XHM-T from Microchip Technology, featuring improved access time (4.5 µs) and extended temperature range (-40°C to 85°C). Supply voltage minimum increases to 1.7V.

Category 3: Alternative Manufacturer Equivalents (Rohm Semiconductor) Parts from Rohm Semiconductor maintaining 1Kbit capacity and I2C interface with varying clock frequencies (400 kHz or 1 MHz), package options (8-TSSOP, 8-MSOP, 8-LSSOP), and extended supply voltage ranges (1.6V to 5.5V or 1.8V to 5.5V). Product status varies from Active to Not For New Designs.

Parameter Comparison

Part Number	Manufacturer	Memory Size	Clock Frequency	Access Time	Supply Voltage	Operating Temperature	Package	Product Status	Packaging Format
24VL014T/ST	Microchip Technology	1Kbit	400 kHz	900 ns	1.5V ~ 3.6V	-20°C ~ 85°C	8-TSSOP	Active	Tape & Reel
24VL014/ST	Microchip Technology	1Kbit	400 kHz	900 ns	1.5V ~ 3.6V	-20°C ~ 85°C	8-TSSOP	Active	Tube
AT24C01D-XHM-B	Microchip Technology	1Kbit	1 MHz	4.5 µs	1.7V ~ 3.6V	-40°C ~ 85°C	8-TSSOP	Active	Tube
AT24C01D-XHM-T	Microchip Technology	1Kbit	1 MHz	4.5 µs	1.7V ~ 3.6V	-40°C ~ 85°C	8-TSSOP	Active	Cut Tape & Digi-Reel
BR24G01FVJ-3GTE2	Rohm Semiconductor	1Kbit	400 kHz	Not Specified	1.6V ~ 5.5V	-40°C ~ 85°C	8-TSSOP-BJ	Not For New Designs	Tape & Reel
BR24G01FVM-3AGTTR	Rohm Semiconductor	1Kbit	1 MHz	Not Specified	1.6V ~ 5.5V	-40°C ~ 85°C	8-MSOP	Active	Tape & Reel
BR24G01FVT-3GE2	Rohm Semiconductor	1Kbit	400 kHz	Not Specified	1.6V ~ 5.5V	-40°C ~ 85°C	8-TSSOP-B	Active	Tape & Reel
BR24L01AFV-WE2	Rohm Semiconductor	1Kbit	400 kHz	Not Specified	1.8V ~ 5.5V	-40°C ~ 85°C	8-LSSOP	Not For New Designs	Tape & Reel
BR24L01AFVM-WTR	Rohm Semiconductor	1Kbit	400 kHz	Not Specified	1.8V ~ 5.5V	-40°C ~ 85°C	8-MSOP	Active	Tape & Reel
BR24L01AFVT-WE2	ROHM Semiconductor	1Kbit	400 kHz	Not Specified	1.8V ~ 5.5V	-40°C ~ 85°C	8-TSSOP-B	Active	Tape & Reel
BR24T01FVM-WTR	Rohm Semiconductor	1Kbit	400 kHz	Not Specified	1.6V ~ 5.5V	-40°C ~ 85°C	8-MSOP	Active	Tape & Reel

Engineering Selection Recommendations

For Direct Replacement with Identical Specifications: The 24VL014/ST serves as a direct substitute when packaging format change from Tape & Reel to Tube is acceptable. Both parts maintain identical electrical characteristics and Active product status with ROHS3 compliance.

For Applications Requiring Extended Temperature Range: AT24C01D-XHM-T and AT24C01D-XHM-B provide extended operating temperature range (-40°C to 85°C) compared to the 24VL014T/ST (-20°C to 85°C). These parts operate at 1 MHz clock frequency, offering faster I2C communication. Both maintain Active product status and ROHS3 compliance. Minimum supply voltage increases to 1.7V.

For Applications Requiring Higher Supply Voltage Tolerance: Rohm Semiconductor parts (BR24G01, BR24L01, BR24T01 series) support extended supply voltage ranges (1.6V to 5.5V or 1.8V to 5.5V), providing greater flexibility in mixed-voltage systems. All Rohm alternatives maintain ROHS3 compliance and Unlimited moisture sensitivity rating.

For Active Product Status Requirement: When procurement must prioritize Active product status, select from: 24VL014/ST, AT24C01D-XHM-B, AT24C01D-XHM-T, BR24G01FVM-3AGTTR, BR24G01FVT-3GE2, BR24L01AFVM-WTR, BR24L01AFVT-WE2, or BR24T01FVM-WTR. Avoid BR24G01FVJ-3GTE2 and BR24L01AFV-WE2, which carry Not For New Designs status.

For Package Footprint Alternatives: 8-MSOP packages (BR24G01FVM-3AGTTR, BR24L01AFVM-WTR, BR24T01FVM-WTR) provide smaller footprint (0.110" width) compared to 8-TSSOP (0.173" width). 8-LSSOP package (BR24L01AFV-WE2) maintains 0.173" width with different pin configuration.

Frequently Asked Questions (FAQ)

Q: Can AT24C01D-XHM-T replace 24VL014T/ST in existing designs? A: Yes, functionally. Both are 1Kbit I2C EEPROMs in 8-TSSOP packages with identical memory organization (128 x 8) and 5ms write cycle time. The AT24C01D-XHM-T operates at 1 MHz versus 400 kHz, providing faster I2C communication. Operating temperature range extends to -40°C. Minimum supply voltage increases from 1.5V to 1.7V. Verify your application operates within 1.7V to 3.6V range before substitution.

Q: What is the difference between 24VL014T/ST and 24VL014/ST? A: These parts are electrically identical. The difference is packaging format: 24VL014T/ST is supplied in Tape & Reel format, while 24VL014/ST is supplied in Tube format. Both maintain identical electrical specifications, Active product status, and ROHS3 compliance.

Q: Are Rohm Semiconductor parts compatible with Microchip designs? A: Yes, for 1Kbit I2C EEPROM applications. All Rohm alternatives (BR24G01, BR24L01, BR24T01 series) maintain 1Kbit capacity, 128 x 8 organization, I2C interface, and 5ms write cycle time. Verify package footprint compatibility (8-TSSOP, 8-MSOP, or 8-LSSOP) and supply voltage requirements. Rohm parts support wider voltage ranges (1.6V to 5.5V or 1.8V to 5.5V) compared to Microchip 24VL014T/ST (1.5V to 3.6V).

Q: Why do some substitute parts show "Not For New Designs" status? A: BR24G01FVJ-3GTE2 and BR24L01AFV-WE2 carry this designation from the manufacturer, indicating these parts are in mature lifecycle phase. While functionally equivalent and currently in stock, manufacturers recommend using Active status alternatives for new design starts. Existing designs may continue using these parts.

Q: What is the impact of 1 MHz versus 400 kHz clock frequency? A: The 1 MHz variants (AT24C01D-XHM-B, AT24C01D-XHM-T, BR24G01FVM-3AGTTR) support faster I2C communication, reducing transaction time. Access time improves from 900 ns to 4.5 µs. For applications with strict timing requirements or high-frequency I2C buses, 1 MHz parts provide performance advantage. Standard 400 kHz operation remains compatible with all I2C bus speeds up to 400 kHz.

Q: Can I use 8-MSOP package parts as drop-in replacements for 8-TSSOP? A: No. While both are surface mount packages with 8 pins, they have different footprints and pin configurations. 8-MSOP (0.110" width) is narrower than 8-TSSOP (0.173" width). PCB layout and footprint must be redesigned. Verify pin-to-pin compatibility before substitution.

Q: Which substitute offers the widest operating temperature range? A: AT24C01D-XHM-B and AT24C01D-XHM-T both operate from -40°C to 85°C, extending the lower temperature limit by 20°C compared to 24VL014T/ST (-20°C to 85°C). All Rohm alternatives also support -40°C to 85°C range.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitute parts maintain ROHS3 compliance status, matching the 24VL014T/ST compliance level.

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