Part A
24LC512-E/SN
微芯片科技
- Lifecycle
- Active
- Stock
- 5534 件
- Series
- 記憶-記憶
Replacement verdict
Compatible functional replacement candidate
The 24LC512T-I/SN and 24LC512-E/SN are functionally equivalent 512 Kbit I²C serial EEPROM devices from the same manufacturer and family, sharing identical memory density, interface, and package footprint. The only meaningful distinction is the operating temperature grade, with the E/SN variant rated for the extended automotive range. The 24LC512T-I/SN can serve as a functional substitute for the 24LC512-E/SN in applications where the industrial temperature range is sufficient, while the reverse substitution requires validation against the target application's thermal profile.
Memory Density
High match
Interface Type
High match
Package Type
High match
Operating Temperature
Validation required
Parts at a glance
Part B
24LC512T-I/SN
微芯片科技
- Lifecycle
- Active
- Stock
- 1255 件
- Package
- SOIC-8
- Series
- 記憶力
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | 24LC512T-I/SN | 24LC512-E/SN | Why it matters |
|---|---|---|---|
| Operating Temperature Range | -40°C to +85°C (Industrial) | -40°C to +125°C (Extended) | The extended temperature range of the -E version allows operation in harsher environments such as automotive or industrial applications, while the -I version is limited to standard industrial conditions. |
| Memory Size | 512 Kbit | 512 Kbit | Both devices provide the same storage capacity, so they are functionally equivalent in terms of data storage. |
| Memory Organization | 64K x 8 | 64K x 8 | Identical organization ensures the same addressing scheme and software compatibility. |
| Interface Type | I²C (2-wire) | I²C (2-wire) | Both use the same I²C interface, allowing drop-in replacement in existing designs. |
| Supply Voltage Range | 2.5 V to 5.5 V | 2.5 V to 5.5 V | Same voltage range means both can operate from common 3.3 V or 5 V rails without modification. |
| Maximum Clock Frequency | 400 kHz | 400 kHz | Identical maximum clock speed ensures the same data transfer rate and timing compatibility. |
| Package / Mounting | 8-SOIC (Surface Mount) | 8-SOIC (Surface Mount) | Same package and mounting type allow direct PCB footprint compatibility. |
| Packaging / Ordering Suffix | Tape and Reel (T suffix) | Tube / Bulk (no T suffix) | The -T version is supplied in tape and reel for automated assembly, while the non-T version is typically supplied in tubes, affecting manufacturing handling and cost. |
| Automotive Qualification | Not AEC-Q100 qualified | AEC-Q100 qualified (Extended grade) | The -E version is qualified for automotive use, making it suitable for under-hood or safety-critical applications where the -I version is not. |
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 | 24LC512T-I/SN |
|---|---|---|
| Part Status | Active | Active |
| Base Product Number | 24LC512 | - |
| Digi Key Programmable | Verified | - |
| Memory Type | Non-Volatile | Non-Volatile |
| Memory Format | EEPROM | EEPROM |
| Technology | EEPROM | EEPROM |
| Memory Size | 512Kbit | 512Kb (64K x 8) |
| Memory Organization | 64K x 8 | - |
| Memory Interface | I2C | I²C |
| Clock Frequency | 400 kHz | 400 kHz |
| Write Cycle Time - Word, Page | 5ms | - |
| Voltage - Supply | 2.5V ~ 5.5V | 2.5V ~ 5.5V |
| Operating Temperature | -40°C ~ 125°C (TA) | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount | Surface Mount |
| Packaging | Tube | - |
| Access Time | 900 ns | 900 ns |
| Write Cycle Time - Word Page | - | 5ms |
Frequently asked questions
What is the difference between the 24LC512T-I/SN and the 24LC512-E/SN?
The primary difference is the operating temperature range. The 24LC512T-I/SN is rated for the industrial temperature range of -40°C to +85°C, while the 24LC512-E/SN is rated for the extended temperature range of -40°C to +125°C. Both devices are 512 Kbit I²C serial EEPROMs in an 8-lead SOIC package.
Are the 24LC512T-I/SN and 24LC512-E/SN functionally interchangeable?
Yes, both devices share the same 512 Kbit memory density, I²C interface, 8-lead SOIC package, and pinout. They are functionally equivalent for read and write operations. The only difference is the temperature grade, so the 24LC512-E/SN can be used in place of the 24LC512T-I/SN in applications that require the wider temperature range, provided the higher temperature specification is acceptable.
What is the operating temperature range of the 24LC512T-I/SN?
The 24LC512T-I/SN is specified for the industrial temperature range of -40°C to +85°C, as indicated by the "I" in the part number.
What is the operating temperature range of the 24LC512-E/SN?
The 24LC512-E/SN is specified for the extended temperature range of -40°C to +125°C, as indicated by the "E" in the part number.
What package do the 24LC512T-I/SN and 24LC512-E/SN use?
Both devices are offered in the 8-lead SOIC (SN) package, which is a 150 mil wide plastic small outline integrated circuit package.
What is the memory organization of the 24LC512T-I/SN and 24LC512-E/SN?
Both devices are 512 Kbit serial EEPROMs organized as 65,536 words of 8 bits each (64 Kbytes). They support byte write and page write modes with a page size of 128 bytes.
What supply voltage range do the 24LC512T-I/SN and 24LC512-E/SN support?
Both devices operate over a supply voltage range of 2.5V to 5.5V, making them suitable for 3.3V and 5V systems.
What is the maximum clock frequency of the 24LC512T-I/SN and 24LC512-E/SN?
Both devices support a maximum I²C clock frequency of 400 kHz (Fast mode) across the full supply voltage range of 2.5V to 5.5V.
Can the 24LC512-E/SN be used in applications that only require the industrial temperature range?
Yes, the 24LC512-E/SN is rated for -40°C to +125°C, which covers the industrial range of -40°C to +85°C. It can be used in industrial applications, but it is typically selected only when the extended temperature capability is needed, as it may have different pricing or availability compared to the 24LC512T-I/SN.