Equivalent & Substitute Parts for 34VL02T/SN

Part Overview

The 34VL02T/SN is a 2Kbit EEPROM memory IC manufactured by Microchip Technology, featuring I2C interface operation at 400 kHz with 900 ns access time. This component is designed for non-volatile data storage applications requiring low-power operation across industrial temperature ranges. The part maintains Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

Substitute parts are identified to address packaging format availability, extended temperature operating ranges, or higher clock frequency requirements while maintaining core memory functionality and electrical compatibility within specified voltage and thermal parameters.

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	5 ms
Voltage Supply Range	1.5V ~ 3.6V
Operating Temperature	-20°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 eligibility is determined by the following criteria:

Core Electrical Compatibility Requirements:

Memory Size: 2Kbit (256 x 8 organization)
Memory Interface: I2C protocol
Package Type: 8-SOIC form factor
Mounting Type: Surface Mount
RoHS3 Compliance: Required

Allowed Parameter Variations:

Clock Frequency: 400 kHz (primary) or higher frequencies (1 MHz acceptable for backward compatibility)
Access Time: 900 ns (primary) or faster specifications
Voltage Supply Range: Minimum 1.5V required; extended ranges (1.7V minimum) acceptable
Operating Temperature: -20°C ~ 85°C (primary) or extended ranges (-40°C minimum acceptable)
Packaging Format: Tube, Cut Tape (CT), Tape & Reel (TR), or Digi-Reel® formats
Moisture Sensitivity Level: MSL 1 or MSL 3 acceptable

Substitution Categories:

MFR Recommended Substitutes (Direct functional equivalents with identical or superior electrical specifications):

24VL024/SN, 24VL024HT/SN, 24VL024T/SN (identical 400 kHz specification, packaging variants)
AT24C02D-SSHM-B, AT24C02D-SSHM-T (enhanced 1 MHz operation, extended temperature range)

Parametric Equivalents (Identical electrical performance, packaging format variants):

24VL024HT/SN (Tape & Reel packaging)
24VL024T/SN (Cut Tape packaging)

Parameter Comparison

Parameter	34VL02T/SN	24VL024/SN	24VL024HT/SN	24VL024T/SN	AT24C02D-SSHM-B	AT24C02D-SSHM-T
Memory Size	2Kbit	2Kbit	2Kbit	2Kbit	2Kbit	2Kbit
Memory Organization	256 x 8	256 x 8	256 x 8	256 x 8	256 x 8	256 x 8
Memory Interface	I2C	I2C	I2C	I2C	I2C	I2C
Clock Frequency	400 kHz	400 kHz	400 kHz	400 kHz	1 MHz	1 MHz
Access Time	900 ns	900 ns	900 ns	900 ns	4.5 µs	450 ns
Write Cycle Time	5 ms	5 ms	5 ms	5 ms	5 ms	5 ms
Voltage Supply Range	1.5V ~ 3.6V	1.5V ~ 3.6V	1.5V ~ 3.6V	1.5V ~ 3.6V	1.7V ~ 3.6V	1.7V ~ 3.6V
Operating Temperature	-20°C ~ 85°C	-20°C ~ 85°C	-20°C ~ 85°C	-20°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Package Type	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC
Packaging Format	8-SOIC	Tube	Tape & Reel	Cut Tape	Tube	Cut Tape & Digi-Reel
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	MSL 1 (Unlimited)	MSL 1 (Unlimited)	MSL 1 (Unlimited)	MSL 1 (Unlimited)	MSL 3 (168 Hours)	MSL 3 (168 Hours)

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications): Select 24VL024/SN, 24VL024HT/SN, or 24VL024T/SN when packaging format availability or supply chain requirements necessitate substitution. These parts maintain identical electrical performance and temperature operating range as the 34VL02T/SN. Selection among these three variants depends solely on required packaging format: Tube for standard applications, Tape & Reel for high-volume automated assembly, or Cut Tape for mixed-volume production.

For Extended Temperature Range Applications: Select AT24C02D-SSHM-B or AT24C02D-SSHM-T when designs require operation at temperatures below -20°C, extending the minimum operating temperature to -40°C. Both parts maintain RoHS3 compliance and I2C interface compatibility. The AT24C02D-SSHM-T variant offers superior access time performance (450 ns) compared to the AT24C02D-SSHM-B (4.5 µs) and is available in higher inventory quantities.

Compliance Considerations: All substitute parts maintain ROHS3 compliance and REACH Unaffected status, ensuring regulatory compatibility with the original 34VL02T/SN specification. Moisture sensitivity differences (MSL 1 versus MSL 3) require evaluation based on storage and assembly environment conditions.

Frequently Asked Questions (FAQ)

Q: Can AT24C02D-SSHM-T replace 34VL02T/SN in existing designs without circuit modification?

A: Yes. The AT24C02D-SSHM-T maintains I2C protocol compatibility, identical 8-SOIC package pinout, and backward-compatible electrical specifications. The 1 MHz clock frequency operates at higher speed than the 400 kHz requirement, and the 450 ns access time exceeds the 900 ns specification. Voltage supply range (1.7V ~ 3.6V) is compatible with designs operating above 1.7V. Extended temperature range (-40°C ~ 85°C) provides additional operational margin.

Q: What is the difference between 24VL024/SN, 24VL024HT/SN, and 24VL024T/SN?

A: These three parts are electrically identical with matching 2Kbit capacity, 400 kHz I2C operation, and 900 ns access time. The differences are packaging formats only: 24VL024/SN is supplied in Tube format, 24VL024HT/SN in Tape & Reel format, and 24VL024T/SN in Cut Tape format. Selection depends on assembly process requirements and order quantities.

Q: Are there inventory or lead-time advantages to selecting substitute parts?

A: Inventory levels vary by part number and packaging format. AT24C02D-SSHM-T maintains the highest inventory (42,300 pcs), followed by AT24C02D-SSHM-B (20,400 pcs) and 24VL024HT/SN (10,990 pcs). Packaging format availability may influence lead times for specific production requirements.

Q: Does the higher clock frequency of AT24C02D-SSHM-T affect power consumption?

A: Clock frequency specifications define maximum I2C bus speed capability. Actual power consumption depends on system implementation and bus utilization patterns. The AT24C02D-SSHM-T specification does not indicate increased quiescent current compared to 34VL02T/SN.

Q: What is the significance of MSL 3 rating on AT24C02D-SSHM parts?

A: MSL 3 (168 Hours) indicates moisture sensitivity level requiring controlled storage conditions (less than 30% relative humidity) and limiting floor-life after moisture exposure to 168 hours before reflow soldering. MSL 1 (Unlimited) parts like 34VL02T/SN and 24VL024 variants have no moisture sensitivity restrictions. Selection depends on storage environment and assembly process capabilities.

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