component
cat25128vi-gt3
Public Unreviewedby Ray
onsemi EEPROM, SOIC-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
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README
markdownCAT25128VI-GT3
onsemi · EEPROM · SOIC-8
CAT25128VI-GT3 from onsemi, in a SOIC-8. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | CS | input | Active-low chip select. Enables the device on a high-to-low transition and returns SO to Hi-Z / puts the device in standby when high. Every SPI transaction must be framed by a falling and rising edge of CS. |
| 2 | SO | tri_state | Serial data output. In SPI modes (0,0) and (1,1) data is shifted out on the falling edge of SCK. Tri-stated (Hi-Z) when CS is high or HOLD is low. |
| 3 | WP | input | Active-low hardware write protect. When WP is low and the Status Register WPEN bit = 1, writes to the Status Register are inhibited. When WPEN = 0 or WP is high, the pin has no effect. |
| 4 | VSS | power_in | Device ground reference. Connect to system ground. |
| 5 | SI | input | Serial data input. Accepts op-codes, address and data. In SPI modes (0,0) and (1,1) input data is latched on the rising edge of SCK. |
| 6 | SCK | input | Serial clock input. Provided by the SPI host to synchronize communication with the CAT25128. Supports DC to 20 MHz operation at VCC = 4.5-5.5 V. |
| 7 | HOLD | input | Active-low hold input. Pauses SPI communication when driven low while SCK is low (SO goes Hi-Z, SI is ignored); resumes when driven high while SCK is low. When unused, tie to VCC directly or through a resistor. |
| 8 | VCC | power_in | Positive supply input. Operating range 1.8 V to 5.5 V. Recommended local bypass to VSS. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | onsemi |
| Package | SOIC-8 |
| Category | Memory |
| Pins | 8 |
Ordering variants
CAT25128VI-GT3CAT25128VI-GT3VE-GCAT25128VI-GT3VE-GT3CAT25128VI-GT3XI-T2CAT25128VI-GT3XE-T2CAT25128VI-GT3LI-GCAT25128VI-GT3YI-GCAT25128VI-GT3YI-GT3CAT25128VI-GT3YE-GCAT25128VI-GT3YE-GT3CAT25128VI-GT3VP2I-GT3CAT25128VI-GT3VP2E-GT3CAT25128VI-GT3HU4I-GT3CAT25128VI-GT3HU4E-GT3
CAD (KiCad official)
- Symbol:
CAT25128VI-GT3 - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: onsemi datasheet (None pp, sha256
6757827cecd36277, retrieved 2026-08-17, tier: manufacturer) - Extractor:
ds2sf(Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate. - CAD: KiCad official libraries (CC-BY-SA 4.0).