Part A
24LC512-E/SN
Tecnologia Microchip
- Lifecycle
- Active
- Stock
- 5534 PCS
- Series
- Memória - Memória
Replacement verdict
Compatible functional replacement candidate
The 24LC512-E/SN16KVAO is a functionally compatible replacement candidate for the 24LC512-E/SN, sharing identical memory density, interface, and supply voltage characteristics. Both devices are automotive-qualified 512 Kbit I²C serial EEPROMs in SOIC-8 packages, with the VAO variant carrying an extended automotive qualification. Designers should validate the specific qualification and documentation requirements of their application before substituting.
Memory Density
High match
Interface Type
High match
Package Type
High match
Automotive Qualification
Validation required
Parts at a glance
Part B
24LC512-E/SN16KVAO
Tecnologia Microchip
- Lifecycle
- Active
- Stock
- 2745 PCS
- Package
- SOIC-8
- Series
- Memória
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | 24LC512-E/SN | 24LC512-E/SN16KVAO | Why it matters |
|---|---|---|---|
| Memory Size | 512 Kbit | 512 Kbit | Determines the total data storage capacity available to the system. |
| Memory Organization | 64K x 8 | 64K x 8 | Defines how the memory array is addressed and accessed by the host controller. |
| Interface Type | I2C (2-wire) | I2C (2-wire) | Must match the communication protocol supported by the host system for direct substitutability. |
| Supply Voltage Range | 2.5 V to 5.5 V | 2.5 V to 5.5 V | Ensures the device operates correctly within the system power rail without level shifting. |
| Maximum Clock Frequency | 400 kHz | 400 kHz | Affects read/write throughput and must be compatible with the bus master timing. |
| Operating Temperature Range | -40°C to +125°C | -40°C to +125°C | Determines suitability for automotive and industrial environments with extreme thermal conditions. |
| Package / Case | 8-SOIC | 8-SOIC | Physical footprint and pinout must match the PCB layout for drop-in replacement. |
| Mounting Type | Surface Mount | Surface Mount | Assembly method must be compatible with the existing manufacturing process. |
| Qualification / Grade | Extended (E) Industrial Grade | Automotive AEC-Q100 Qualified (VAO) | Automotive-qualified parts meet stricter reliability and quality standards required for vehicle applications. |
| Manufacturer Part Number Suffix | Standard ordering suffix | 16KVAO automotive ordering suffix | Different suffixes indicate distinct qualification flows, traceability, and documentation requirements. |
Need help validating a replacement?
Send your BOM and application constraints for technical and sourcing review.
Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | 24LC512-E/SN | 24LC512-E/SN16KVAO |
|---|---|---|
| Supplier | - | Microchip Technology |
| Series | - | Automotive, AEC-Q100 |
| Part Status | Active | Active |
| Memory Type | Non-Volatile | Non-Volatile |
| Memory Format | EEPROM | EEPROM |
| Technology | EEPROM | EEPROM |
| Memory Size | 512Kbit | 512Kb (64K x 8) |
| Memory Interface | I2C | I²C |
| Clock Frequency | 400 kHz | 400 kHz |
| Write Cycle Time - Word Page | - | 5ms |
| Access Time | 900 ns | 900 ns |
| Voltage - Supply | 2.5V ~ 5.5V | 2.5V ~ 5.5V |
| Operating Temperature | -40°C ~ 125°C (TA) | -40°C ~ 125°C (TA) |
| Mounting Type | Surface Mount | Surface Mount |
| Base Product Number | 24LC512 | - |
| Digi Key Programmable | Verified | - |
| Memory Organization | 64K x 8 | - |
| Write Cycle Time - Word, Page | 5ms | - |
| Packaging | Tube | - |
Frequently asked questions
What are the 24LC512-E/SN and 24LC512-E/SN16KVAO?
Both are Microchip Technology 512 Kbit I2C serial EEPROM devices in an 8-lead SOIC package. The 24LC512-E/SN is the standard ordering part number, while the 24LC512-E/SN16KVAO is an automotive-qualified variant of the same device.
What is the difference between the 24LC512-E/SN and 24LC512-E/SN16KVAO?
The primary difference is qualification. The 24LC512-E/SN16KVAO is an automotive-grade version that meets AEC-Q100 requirements and is produced under a PPAP/automotive flow, whereas the 24LC512-E/SN is the standard industrial-grade ordering part number. Both share the same 512 Kbit density, I2C interface, and 8-lead SOIC package.
Are the 24LC512-E/SN and 24LC512-E/SN16KVAO functionally interchangeable?
Functionally, both devices provide 512 Kbit of I2C EEPROM with the same memory organization, voltage range, and pinout. However, substitution should only be performed after confirming that the target application's qualification requirements are satisfied by the selected grade.
What is the memory organization of these devices?
Both devices are organized as 65,536 words of 8 bits (64 Kbyte) and support page write operations of up to 128 bytes. They communicate over a standard I2C bus at clock frequencies up to 400 kHz.
What supply voltage range do the 24LC512-E/SN and 24LC512-E/SN16KVAO support?
Both devices operate from 2.5 V to 5.5 V, making them suitable for mixed 3.3 V and 5 V system designs.
What package do the 24LC512-E/SN and 24LC512-E/SN16KVAO use?
Both parts are offered in the 8-lead SOIC (150 mil) package, designated by the "SN" suffix in the ordering code.
What is the operating temperature range for these devices?
The 24LC512-E/SN and 24LC512-E/SN16KVAO are specified for the extended temperature range of -40 °C to +125 °C, as indicated by the "E" in the ordering code.
Can the 24LC512-E/SN16KVAO be used in automotive applications?
Yes. The 24LC512-E/SN16KVAO is the automotive-qualified ordering option and is intended for applications requiring AEC-Q100 compliance and automotive production part approval processes.
Which part number should be selected for a non-automotive design?
For non-automotive designs, the 24LC512-E/SN is typically sufficient, provided the extended temperature range and standard industrial qualification meet the application requirements. The automotive-qualified 24LC512-E/SN16KVAO should be selected when AEC-Q100 compliance is required.