Part A
24LC512-E/SM
Technologie de micropuce
- Lifecycle
- Active
- Stock
- 2336 PCS
- Package
- SOIJ-8
- Series
- Mémoire
Replacement verdict
Compatible functional replacement candidate
The 24LC512-E/SM and 24LC512T-E/MS are functionally equivalent I²C serial EEPROM devices sharing identical memory density, voltage range, and temperature grade, with the only meaningful distinction being package orientation and packing format. Both are valid substitutes in designs that accommodate the respective SOIC-8 and MSOP-8 footprints.
Memory Density
High match
Interface Type
High match
Operating Voltage
High match
Package Type
Validation required
Parts at a glance
Part B
24LC512T-E/MS
Technologie de micropuce
- Lifecycle
- Active
- Stock
- 4835 PCS
- Package
- TSSOP-8
- Series
- Mémoire
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/SM | 24LC512T-E/MS | Why it matters |
|---|---|---|---|
| Memory Size | 512 Kbit | 512 Kbit | Identical storage capacity means either device can hold the same amount of data. |
| Memory Organization | 64K x 8 | 64K x 8 | Same byte-wide organization ensures identical addressing and data access behavior. |
| Interface Type | I2C (2-wire) | I2C (2-wire) | Matching I2C interface allows drop-in compatibility with the same bus and protocol. |
| Supply Voltage Range | 2.5 V to 5.5 V | 2.5 V to 5.5 V | Same operating voltage range supports identical power supply designs. |
| Maximum Clock Frequency | 400 kHz | 400 kHz | Equal bus speed capability ensures the same timing performance in the target system. |
| Operating Temperature Range | -40°C to +125°C | -40°C to +125°C | Identical extended temperature range qualifies both parts for the same harsh environments. |
| Mounting Type | Surface Mount | Surface Mount | Both are surface-mount devices, but the package style differs, affecting board layout. |
| Package / Case | 8-SOIC (0.208", 5.28mm Width) | 8-TSSOP / 8-MSOP (0.118", 3.00mm Width) | Different footprints require different PCB land patterns, so they are not physically interchangeable. |
| Packaging | Tube | Tape & Reel | Packaging form affects assembly handling and is often tied to the specific part number suffix. |
| Write Cycle Time | 5 ms (max) | 5 ms (max) | Same maximum write cycle time ensures equivalent write throughput and timing margins. |
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/SM | 24LC512T-E/MS |
|---|---|---|
| Supplier | - | Microchip Technology |
| Part Status | Active | Active |
| Memory Type | Non-Volatile | Non-Volatile |
| Memory Format | EEPROM | EEPROM |
| Technology | EEPROM | EEPROM |
| Memory Size | 512Kb (64K x 8) | 512Kb (64K x 8) |
| Memory Interface | I²C | I²C |
| Clock Frequency | 400 kHz | 400 kHz |
| Write Cycle Time - Word Page | 5ms | 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 |
Frequently asked questions
What is the difference between the 24LC512-E/SM and the 24LC512T-E/MS?
The primary difference is the package and packing format. The 24LC512-E/SM is supplied in an 8-lead SOIC package in tube form, while the 24LC512T-E/MS is supplied in an 8-lead MSOP package in tape and reel form. Both devices are 512 Kbit I2C serial EEPROMs with identical electrical functionality and extended temperature range.
Are the 24LC512-E/SM and 24LC512T-E/MS functionally interchangeable?
Electrically, both devices are functionally identical 512 Kbit I2C serial EEPROMs with the same memory organization, voltage range, and interface protocol. However, they are not drop-in replacements for each other because they use different package types (SOIC vs. MSOP), which require different PCB land patterns.
What is the memory organization of the 24LC512-E/SM and 24LC512T-E/MS?
Both devices provide 512 Kbits of serial EEPROM memory organized as 65,536 words of 8 bits each. They support byte write and page write operations with a page size of 128 bytes.
What supply voltage range do the 24LC512-E/SM and 24LC512T-E/MS support?
Both devices operate over a supply voltage range of 2.5 V to 5.5 V, making them suitable for both 3.3 V and 5 V systems.
What is the operating temperature range for the 24LC512-E/SM and 24LC512T-E/MS?
Both devices are rated for the extended industrial temperature range of -40°C to +125°C, as indicated by the "E" suffix in the part number.
What is the maximum clock frequency of the 24LC512-E/SM and 24LC512T-E/MS?
Both devices support I2C clock frequencies up to 400 kHz in standard and fast modes, and up to 1 MHz in fast mode plus, depending on the supply voltage and specific operating conditions defined in the manufacturer datasheet.
What package types are used for the 24LC512-E/SM and 24LC512T-E/MS?
The 24LC512-E/SM uses an 8-lead SOIC package (SM suffix), while the 24LC512T-E/MS uses an 8-lead MSOP package (MS suffix). The "T" in the 24LC512T-E/MS part number indicates tape and reel packing.
What is the difference in packing between the 24LC512-E/SM and the 24LC512T-E/MS?
The 24LC512-E/SM is typically supplied in tube packaging, while the 24LC512T-E/MS is supplied in tape and reel packaging, as denoted by the "T" prefix in the part number. This affects handling and assembly processes but not device performance.