Microchip Technology 24VL014HT/ST EEPROM 1Kbit I2C Memory IC

Part Overview

The 24VL014HT/ST is a 1Kbit EEPROM memory IC manufactured by Microchip Technology, featuring I2C interface communication at 400 kHz clock frequency. This non-volatile memory device is organized as 128 x 8 bits and operates across a supply voltage range of 1.5V to 3.6V with an access time of 900 ns. The part is supplied in Tape & Reel packaging with 8-TSSOP surface mount configuration and maintains Active product status with ROHS3 compliance.

Equivalent and substitute parts become necessary when addressing supply chain constraints, packaging format requirements, extended temperature operating ranges, or enhanced clock frequency specifications for system optimization.

Key Parameters

Parameter	Specification
Memory Size	1Kbit
Memory Organization	128 x 8
Memory Interface	I2C
Clock Frequency	400 kHz
Access Time	900 ns
Write Cycle Time	5ms
Voltage Supply Range	1.5V ~ 3.6V
Operating Temperature	-20°C ~ 85°C
Package Type	8-TSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the 24VL014HT/ST is determined by strict equivalence across the following critical parameters:

Core Compatibility Requirements:

Memory Size: 1Kbit (128 x 8 organization)
Memory Interface: I2C protocol
Memory Type: Non-Volatile EEPROM
Write Cycle Time: 5ms
Package/Case: 8-TSSOP or mechanically compatible surface mount packages
Mounting Type: Surface Mount

Acceptable Variation Parameters:

Clock Frequency: 400 kHz or higher (backward compatible)
Access Time: 900 ns or faster (backward compatible)
Voltage Supply Range: Must encompass or exceed 1.5V ~ 3.6V minimum requirement
Operating Temperature: May extend beyond -20°C ~ 85°C range
Packaging Format: Tube, Cut Tape, or Tape & Reel acceptable for equivalent functionality
Manufacturer: Microchip Technology, Rohm Semiconductor

Substitutes are grouped by manufacturer and package configuration while maintaining full electrical and functional compatibility with the primary device.

Parameter Comparison

Part Number	Manufacturer	Memory Size	Clock Frequency	Access Time	Voltage Supply	Operating Temp	Package	Packaging Format	Product Status
24VL014HT/ST	Microchip Technology	1Kbit	400 kHz	900 ns	1.5V ~ 3.6V	-20°C ~ 85°C	8-TSSOP	Tape & Reel	Active
24VL014H/ST	Microchip Technology	1Kbit	400 kHz	900 ns	1.5V ~ 3.6V	-20°C ~ 85°C	8-TSSOP	Tube	Active
AT24C01D-XHM-B	Microchip Technology	1Kbit	1 MHz	4.5 µs	1.7V ~ 3.6V	-40°C ~ 85°C	8-TSSOP	Tube	Active
AT24C01D-XHM-T	Microchip Technology	1Kbit	1 MHz	4.5 µs	1.7V ~ 3.6V	-40°C ~ 85°C	8-TSSOP	Cut Tape & Digi-Reel	Active
BR24G01FVJ-3GTE2	Rohm Semiconductor	1Kbit	400 kHz	Not Specified	1.6V ~ 5.5V	-40°C ~ 85°C	8-TSSOP-BJ	Tape & Reel	Not For New Designs
BR24G01FVM-3AGTTR	Rohm Semiconductor	1Kbit	1 MHz	Not Specified	1.6V ~ 5.5V	-40°C ~ 85°C	8-MSOP	Tape & Reel	Active
BR24G01FVT-3GE2	Rohm Semiconductor	1Kbit	400 kHz	Not Specified	1.6V ~ 5.5V	-40°C ~ 85°C	8-TSSOP-B	Tape & Reel	Active
BR24L01AFV-WE2	Rohm Semiconductor	1Kbit	400 kHz	Not Specified	1.8V ~ 5.5V	-40°C ~ 85°C	8-LSSOP	Tape & Reel	Not For New Designs
BR24L01AFVM-WTR	Rohm Semiconductor	1Kbit	400 kHz	Not Specified	1.8V ~ 5.5V	-40°C ~ 85°C	8-MSOP	Tape & Reel	Active
BR24L01AFVT-WE2	Rohm Semiconductor	1Kbit	400 kHz	Not Specified	1.8V ~ 5.5V	-40°C ~ 85°C	8-TSSOP-B	Tape & Reel	Active
BR24T01FVM-WTR	Rohm Semiconductor	1Kbit	400 kHz	Not Specified	1.6V ~ 5.5V	-40°C ~ 85°C	8-MSOP	Tape & Reel	Active

Engineering Selection Recommendations

Microchip Technology Direct Equivalents: The 24VL014H/ST in Tube packaging provides identical electrical specifications to the primary 24VL014HT/ST part, differing only in packaging format. Selection between these variants depends on procurement and assembly requirements.

The AT24C01D series (AT24C01D-XHM-B and AT24C01D-XHM-T) from Microchip Technology offers enhanced clock frequency at 1 MHz with improved access time of 4.5 µs. These parts maintain Active product status and extend the operating temperature range to -40°C ~ 85°C. Voltage supply compatibility begins at 1.7V, which remains within acceptable system operating margins for most applications designed for the primary part.

Rohm Semiconductor Alternatives: Rohm Semiconductor provides multiple 1Kbit I2C EEPROM options with varying package configurations. The BR24G01FVT-3GE2, BR24L01AFVM-WTR, BR24L01AFVT-WE2, and BR24T01FVM-WTR maintain 400 kHz clock frequency matching the primary device. These parts feature extended voltage supply ranges (1.6V ~ 5.5V or 1.8V ~ 5.5V) and -40°C ~ 85°C operating temperature specifications.

The BR24G01FVM-3AGTTR operates at 1 MHz clock frequency with Active product status, suitable for applications requiring higher data throughput.

Product Status Considerations: Parts designated "Not For New Designs" (BR24G01FVJ-3GTE2 and BR24L01AFV-WE2) remain functionally equivalent but should be evaluated for long-term supply availability in new system designs.

Compliance and Certification: All listed substitutes maintain ROHS3 compliance and REACH Unaffected status, matching the primary device certification profile. MSL ratings are uniformly 1 (Unlimited) across all recommended substitutes, ensuring consistent moisture handling requirements.

Frequently Asked Questions (FAQ)

Q: Can AT24C01D series parts directly replace the 24VL014HT/ST? A: Yes. The AT24C01D-XHM-B and AT24C01D-XHM-T maintain 1Kbit capacity, 128 x 8 organization, I2C interface, and 5ms write cycle time. The higher clock frequency (1 MHz vs 400 kHz) and faster access time (4.5 µs vs 900 ns) are backward compatible. Voltage supply begins at 1.7V, which is acceptable for systems designed for 1.5V minimum operation.

Q: What is the difference between 24VL014HT/ST and 24VL014H/ST? A: These parts are electrically identical. The difference is packaging format: 24VL014HT/ST is supplied in Tape & Reel, while 24VL014H/ST is supplied in Tube. Selection depends on assembly line requirements and procurement preferences.

Q: Are Rohm Semiconductor parts compatible with Microchip Technology designs? A: Yes, provided the system design accommodates the extended voltage supply range (1.6V ~ 5.5V or 1.8V ~ 5.5V) and the specific package variant selected. All Rohm parts maintain 1Kbit capacity, I2C interface, and 5ms write cycle time. Package differences (8-MSOP vs 8-TSSOP) require PCB layout verification.

Q: Which substitute offers the best performance upgrade? A: The AT24C01D series provides 1 MHz clock frequency and 4.5 µs access time compared to the primary part's 400 kHz and 900 ns specifications. The BR24G01FVM-3AGTTR also offers 1 MHz operation. These upgrades are backward compatible with systems designed for the slower primary device.

Q: Can I use BR24L01AFVM-WTR in place of 24VL014HT/ST? A: Yes. Both are 1Kbit I2C EEPROMs with 400 kHz operation and 5ms write cycle time. The BR24L01AFVM-WTR uses 8-MSOP package (0.110", 2.80mm width) versus the primary part's 8-TSSOP (0.173", 4.40mm width). PCB layout and footprint compatibility must be verified before substitution.

Q: What is the significance of MSL rating differences? A: All listed substitutes maintain MSL 1 (Unlimited) rating, matching the primary device. This ensures identical moisture sensitivity handling and storage requirements across all equivalent parts.

Q: Are there temperature range considerations for substitution? A: The primary part operates -20°C ~ 85°C. Most substitutes extend the lower limit to -40°C, which is beneficial for industrial applications. If the system design relies on the -20°C minimum specification, verify that substitute parts meet this requirement or confirm system tolerance for extended cold operation.

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