Equivalent & Substitute Parts for 34VL02/ST

Part Overview

The 34VL02/ST is a 2Kbit EEPROM memory IC manufactured by Microchip Technology, featuring I2C interface with 400 kHz clock frequency and 900 ns access time. This component is actively produced and widely used in embedded systems requiring non-volatile memory storage. Substitute parts may be required due to inventory constraints, packaging preferences, or performance requirements that exceed the base specification.

Key Parameters

Parameter	Value
Memory Size	2Kbit
Memory Organization	256 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	8-TSSOP
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the 34VL02/ST are classified into two categories based on electrical and mechanical compatibility:

MFR Recommended Substitutes (AT24C02D-XHM-B, AT24C02D-XHM-T): These parts maintain identical memory capacity (2Kbit, 256 x 8 organization) and I2C interface but operate at 1 MHz clock frequency with 4.5 µs access time. They support an extended supply voltage range (1.7V ~ 3.6V) and wider operating temperature range (-40°C ~ 85°C). Both are ROHS3 compliant and differ only in packaging format (Tube vs. Tape & Reel).

Parametric Equivalent (24VL024/ST): This part provides identical electrical specifications to the main part, including 400 kHz clock frequency, 900 ns access time, and 1.5V ~ 3.6V supply range. It maintains the same 8-TSSOP package and operating temperature range (-20°C ~ 85°C).

Substitution is permitted when the target application can tolerate the electrical parameter differences or when identical specifications are required.

Parameter Comparison

Parameter	34VL02/ST	AT24C02D-XHM-B	AT24C02D-XHM-T	24VL024/ST
Memory Size	2Kbit	2Kbit	2Kbit	2Kbit
Memory Organization	256 x 8	256 x 8	256 x 8	256 x 8
Memory Interface	I2C	I2C	I2C	I2C
Clock Frequency	400 kHz	1 MHz	1 MHz	400 kHz
Access Time	900 ns	4.5 µs	4.5 µs	900 ns
Write Cycle Time	5ms	5ms	5ms	5ms
Voltage Supply Range	1.5V ~ 3.6V	1.7V ~ 3.6V	1.7V ~ 3.6V	1.5V ~ 3.6V
Operating Temperature	-20°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-20°C ~ 85°C
Package	8-TSSOP	8-TSSOP	8-TSSOP	8-TSSOP
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

All listed substitute parts are manufactured by Microchip Technology and maintain Active product status with ROHS3 compliance and REACH unaffected certification.

For applications requiring identical electrical performance, the 24VL024/ST provides parametric equivalence with matching clock frequency (400 kHz) and access time (900 ns).

For applications tolerating higher clock frequency operation, the AT24C02D-XHM-B and AT24C02D-XHM-T offer enhanced performance specifications with 1 MHz clock frequency and extended temperature range (-40°C ~ 85°C). Selection between these two depends on packaging requirements: AT24C02D-XHM-B is supplied in Tube packaging, while AT24C02D-XHM-T is supplied in Tape & Reel format.

Applications operating at minimum supply voltage below 1.7V must use either the 34VL02/ST or 24VL024/ST, as the AT24C02D variants specify a minimum of 1.7V.

Frequently Asked Questions (FAQ)

Q: Can AT24C02D-XHM-B or AT24C02D-XHM-T be used as direct replacements for 34VL02/ST?

A: Yes, with electrical performance considerations. Both parts maintain identical memory capacity, organization, and I2C interface. The higher clock frequency (1 MHz vs. 400 kHz) and faster access time (4.5 µs vs. 900 ns) are backward compatible with systems designed for the base specification. However, the minimum supply voltage is 1.7V instead of 1.5V, which may affect low-voltage applications.

Q: What is the difference between AT24C02D-XHM-B and AT24C02D-XHM-T?

A: Both parts are electrically identical. The difference is packaging format: AT24C02D-XHM-B is supplied in Tube packaging, while AT24C02D-XHM-T is supplied in Tape & Reel (TR) format. Selection depends on assembly process requirements and inventory management preferences.

Q: Is 24VL024/ST a true equivalent to 34VL02/ST?

A: Yes. The 24VL024/ST provides parametric equivalence with identical clock frequency (400 kHz), access time (900 ns), supply voltage range (1.5V ~ 3.6V), and operating temperature range (-20°C ~ 85°C). All electrical and mechanical specifications match the main part.

Q: Are all substitute parts in the same 8-TSSOP package?

A: Yes. All listed substitute parts use the 8-TSSOP (0.173", 4.40mm Width) package, ensuring mechanical compatibility and identical PCB footprint.

Q: Do all parts meet the same compliance standards?

A: Yes. All parts are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99 with HTSUS code 8542.32.0051.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message