component
CAT24C04WI-GT3
Public Unreviewedby Ray
onsemi EEPROM, SOIC-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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Contents
README
markdownCAT24C04WI-GT3
onsemi · EEPROM · SOIC-8
CAT24C04WI-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 | NC | unconnected | No Connect. On the CAT24C04 the A0 address input is not used because internal address bit a8 is derived from the slave address. |
| 2 | A1 | input | Device Address Input bit 1. Sets one of the two external address bits used when cascading up to four CAT24C04 devices on the same I2C bus. Internal weak pull-down to VSS when undriven; typical input current up to 50 uA depending on VCC. |
| 3 | A2 | input | Device Address Input bit 2. Second external slave-address selection pin used when cascading up to four CAT24C04 devices. Internal weak pull-down to VSS when undriven. |
| 4 | VSS | power_in | Ground reference for the device (0 V). |
| 5 | SDA | bidirectional | Serial Data I/O for the I2C bus. Open-drain output - requires an external pull-up resistor to VCC. Receives input data and transmits EEPROM read data; output is clocked on the negative edge of SCL. |
| 6 | SCL | input | Serial Clock Input for the I2C bus. Accepts the clock generated by the master; supports Standard (100 kHz) and Fast (400 kHz) modes. Schmitt-trigger input with noise suppression filter. |
| 7 | WP | input | Write Protect input. When held HIGH, all write operations to the entire memory array are inhibited. Internal weak pull-down to VSS when undriven; leave HIGH to enable full write protection. |
| 8 | VCC | power_in | Positive supply voltage, 1.7 V to 5.5 V. Absolute maximum 6.5 V referenced to VSS. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | onsemi |
| Package | SOIC-8 |
| Category | Memory |
| Pins | 8 |
Ordering variants
CAT24C04WI-GT3CAT24C04WI-GT3LICAT24C04WI-GT3YICAT24C04WI-GT3ZICAT24C04WI-GT3USICAT24C04WI-GT3VP2CAT24C04WI-GT3HU4CAT24C04WI-GT3TDICAT24C04WI-GT3C4ACAT24C04WI-GT3C4U
CAD (KiCad official)
- Symbol:
CAT24C04WI-GT3 - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
3D model downloads
Two STEP files. Same geometry, different body top:
| File | Size | Use it when |
|---|---|---|
cat24c04wi-gt3.step |
122 KB | You want the bare part, or you mark your own boards. |
cat24c04wi-gt3-etched.step |
2.4 MB | You want the part with CAT24C04WI-GT3 already on it. |
The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 612 faces against 147 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: onsemi datasheet (23 pp, sha256
1068a4f09584c5b3, 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).