34VL02T/MNY EEPROM Memory IC Equivalent & Substitute Parts

Part Overview

The 34VL02T/MNY is a 2Kbit I2C EEPROM memory integrated circuit manufactured by Microchip Technology. This non-volatile memory device operates at 400 kHz clock frequency with 900 ns access time, designed for applications requiring low-power data storage in compact surface-mount packages. The part is currently in active production status with 2400 units in stock. Substitute parts are identified when equivalent memory capacity, interface protocol, and electrical specifications align within acceptable operational 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
Supply Voltage Range	1.5V ~ 3.6V
Operating Temperature	-20°C ~ 85°C
Package Type	8-TDFN (2x3)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the 34VL02T/MNY are classified based on the following substitution criteria:

MFR Recommended Substitute (AT24C02D-MAHM-T): This substitute maintains identical memory capacity (2Kbit, 256 x 8 organization) and I2C interface protocol. The primary difference is elevated clock frequency (1 MHz versus 400 kHz) and improved access time (4.5 µs versus 900 ns), which provides enhanced performance headroom. Supply voltage range is narrower (1.7V ~ 3.6V) and operating temperature range is extended (-40°C ~ 85°C). Package format differs (8-UDFN versus 8-TDFN), requiring PCB layout verification.

Parametric Equivalent Substitute (24VL025T/MNY): This substitute provides direct parameter equivalence across all critical specifications: identical memory size, organization, clock frequency, access time, supply voltage range, and operating temperature. Package type and footprint are identical (8-TDFN 2x3). This part represents a direct functional replacement with no performance trade-offs.

Parameter Comparison

Parameter	34VL02T/MNY (Main)	AT24C02D-MAHM-T (MFR Recommended)	24VL025T/MNY (Parametric Equivalent)
Memory Size	2Kbit	2Kbit	2Kbit
Memory Organization	256 x 8	256 x 8	256 x 8
Memory Interface	I2C	I2C	I2C
Clock Frequency	400 kHz	1 MHz	400 kHz
Access Time	900 ns	4.5 µs	900 ns
Write Cycle Time	5 ms	5 ms	5 ms
Supply Voltage Range	1.5V ~ 3.6V	1.7V ~ 3.6V	1.5V ~ 3.6V
Operating Temperature	-20°C ~ 85°C	-40°C ~ 85°C	-20°C ~ 85°C
Package Type	8-TDFN (2x3)	8-UDFN (2x3)	8-TDFN (2x3)
Mounting Type	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	3 (168 Hours)	1 (Unlimited)

Engineering Selection Recommendations

For Direct Replacement: Select 24VL025T/MNY when component availability or supply chain requirements necessitate substitution. This part maintains identical electrical and mechanical specifications with no design modifications required. Identical package footprint (8-TDFN 2x3) ensures PCB compatibility without layout changes.

For Performance Enhancement: Select AT24C02D-MAHM-T when system design permits higher clock frequency operation (1 MHz) and can accommodate extended operating temperature range (-40°C ~ 85°C). This selection requires PCB layout verification due to package format change (8-UDFN versus 8-TDFN). Verify that minimum supply voltage requirement (1.7V minimum) aligns with system power delivery specifications. MSL rating of 3 requires controlled moisture exposure during storage and assembly.

All substitute parts maintain ROHS3 compliance and EAR99 export classification consistent with the main part.

Frequently Asked Questions (FAQ)

Q: Can AT24C02D-MAHM-T be used as a direct drop-in replacement for 34VL02T/MNY?

A: AT24C02D-MAHM-T is functionally compatible but requires PCB layout verification. The package format differs (8-UDFN versus 8-TDFN), resulting in different footprint dimensions and pin spacing. Verify PCB pad layout compatibility before assembly. The part is electrically compatible with identical memory capacity and I2C interface.

Q: What is the primary advantage of 24VL025T/MNY as a substitute?

A: 24VL025T/MNY provides complete parameter equivalence with identical package footprint. No design modifications, PCB layout changes, or firmware adjustments are required. This part serves as a direct functional replacement.

Q: Are there supply voltage compatibility concerns with AT24C02D-MAHM-T?

A: AT24C02D-MAHM-T requires minimum supply voltage of 1.7V, compared to 1.5V for the main part. Verify that system power delivery maintains voltage above 1.7V under all operating conditions, including transient events and load variations.

Q: What does MSL rating 3 mean for AT24C02D-MAHM-T?

A: MSL (Moisture Sensitivity Level) 3 indicates the component requires controlled moisture exposure for 168 hours maximum after packaging. Implement proper storage in dry conditions and follow IPC-A-610 moisture handling procedures during assembly to prevent solder joint reliability issues.

Q: Can clock frequency differences affect system operation?

A: AT24C02D-MAHM-T operates at 1 MHz clock frequency versus 400 kHz for the main part. I2C bus speed is determined by the master controller, not the slave device. The substitute part supports higher bus speeds but operates correctly at lower speeds. Verify I2C bus pull-up resistor values remain appropriate for system clock frequency.

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