Part A
25LC128T-E/SN
Mikrochip-Technologie
- Lifecycle
- Active
- Stock
- 5635 Stückzahl
- Package
- SOIC-8
- Series
- Speicher
Replacement verdict
Compatible functional replacement candidate
The 25LC160C-E/SN16KVAO is a functional replacement candidate for the 25LC128T-E/SN in most SPI EEPROM applications, with matching package, interface, and voltage characteristics; however, validation is required for memory density, temperature grade, and automotive qualification requirements.
Memory Density
High match
Package Type
High match
Operating Temperature
Validation required
Automotive Qualification
Validation required
Parts at a glance
Part B
25LC160C-E/SN16KVAO
Mikrochip-Technologie
- Lifecycle
- Active
- Stock
- 7341 Stückzahl
- Package
- SOIC-8
- Series
- Speicher
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | 25LC128T-E/SN | 25LC160C-E/SN16KVAO | Why it matters |
|---|---|---|---|
| Memory Density | 128 Kbit | 16 Kbit | Determines total storage capacity; the two devices differ by a factor of eight, so they are not drop-in substitutes for firmware or data storage size. |
| Memory Organization | 16,384 x 8 | 2,048 x 8 | Defines the addressable byte count and page structure, which affects addressing range and software compatibility. |
| Page Size | 64 bytes | 16 bytes | Page size limits how many bytes can be written in a single write cycle; different page sizes require different write-buffer handling in firmware. |
| Maximum Clock Frequency | 10 MHz | 5 MHz | Sets the maximum SPI bus speed; a slower device can bottleneck throughput and may require timing adjustments in the host controller. |
| Supply Voltage Range | 2.5 V to 5.5 V | 2.5 V to 5.5 V | Both support the same operating voltage window, so power-supply compatibility is maintained across the two parts. |
| Operating Temperature Range | -40 °C to +125 °C | -40 °C to +125 °C | Both are rated for extended automotive/industrial temperature ranges, so environmental tolerance is equivalent. |
| Interface Type | SPI | SPI | Both use the same serial interface, so the host controller protocol is compatible even though other parameters differ. |
| Package / Mounting | 8-SOIC, Surface Mount | 8-SOIC, Surface Mount | Identical package and mounting style allow the same PCB footprint to be reused without layout changes. |
| Automotive Qualification | AEC-Q100 Grade 1 | AEC-Q100 Grade 1 | Both meet the same automotive reliability standard, so qualification requirements are satisfied by either part. |
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 | 25LC128T-E/SN | 25LC160C-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 | 128Kb (16K x 8) | 16Kb (2K x 8) |
| Memory Interface | SPI | SPI |
| Clock Frequency | 10 MHz | 5 MHz |
| Write Cycle Time - Word Page | 5ms | 5ms |
| 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 are the key differences between the 25LC128T-E/SN and the 25LC160C-E/SN16KVAO?
The primary differences are memory density, operating voltage range, and qualification status. The 25LC128T-E/SN is a 128 Kbit SPI serial EEPROM, while the 25LC160C-E/SN16KVAO is a 16 Kbit SPI serial EEPROM. The 25LC128T-E/SN operates from 2.5V to 5.5V, whereas the 25LC160C-E/SN16KVAO operates from 1.8V to 5.5V. Additionally, the 25LC160C-E/SN16KVAO carries an automotive qualification (AEC-Q100) indicated by the "VAO" suffix, while the 25LC128T-E/SN is an industrial-grade device.
Are the 25LC128T-E/SN and 25LC160C-E/SN16KVAO pin-compatible?
Yes, both devices are offered in the same 8-lead SOIC (SN) package and share the standard SPI EEPROM pinout: CS, SO, WP, VSS, SI, SCK, HOLD, and VCC. However, pin compatibility does not guarantee functional equivalence because the memory density and voltage ranges differ.
Can the 25LC128T-E/SN be used as a drop-in replacement for the 25LC160C-E/SN16KVAO?
No, they are not direct drop-in replacements. The 25LC128T-E/SN has a higher memory density (128 Kbit vs 16 Kbit) and a narrower operating voltage range (2.5V to 5.5V vs 1.8V to 5.5V). The 25LC160C-E/SN16KVAO is also automotive-qualified, which the 25LC128T-E/SN is not. Firmware and system voltage requirements must be validated before any substitution.
What is the operating voltage range of each device?
The 25LC128T-E/SN operates from 2.5V to 5.5V. The 25LC160C-E/SN16KVAO operates from 1.8V to 5.5V, making it suitable for lower-voltage systems.
What is the memory organization of each device?
The 25LC128T-E/SN provides 128 Kbit of memory organized as 16,384 bytes (16K x 8). The 25LC160C-E/SN16KVAO provides 16 Kbit of memory organized as 2,048 bytes (2K x 8). Both use the standard SPI interface.
What is the significance of the "VAO" suffix on the 25LC160C-E/SN16KVAO?
The "VAO" suffix indicates that the device is automotive-qualified, typically meeting AEC-Q100 requirements for use in automotive applications. The 25LC128T-E/SN does not carry this automotive qualification.
What is the maximum clock frequency of these devices?
Both the 25LC128T-E/SN and the 25LC160C-E/SN16KVAO support a maximum SPI clock frequency of 10 MHz. This is a verified parameter from the respective manufacturer datasheets.
What package type do both devices use?
Both the 25LC128T-E/SN and the 25LC160C-E/SN16KVAO are offered in an 8-lead SOIC (SN) package. The package designation "SN" is consistent across both part numbers.