component
ST4485EBDR
Public Made by Adomby adom
STMicroelectronics RS-485 / RS-422 ICs, SO-8. Pinout cross-checked by two models against the datasheet, 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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README
markdownST4485EBDR
STMicroelectronics · RS-485 / RS-422 ICs · SO-8
ST4485EBDR from STMicroelectronics, in a SO-8. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | RO | tri_state | Receiver output; high when differential input A-B > 200 mV, low when A-B < -200 mV, high impedance when RE is high. |
| 2 | RE | input | Receiver enable (active low); enables receiver output when low, device enters shutdown when high with DE low. |
| 3 | DE | input | Driver enable (active high); enables driver outputs when high, device enters shutdown when low with RE high. |
| 4 | DI | input | Driver input; low forces A low and B high, high forces A high and B low; voltage range -0.3 to 7 V. |
| 5 | GND | power_in | Ground; 0 V reference. |
| 6 | A | bidirectional | Non-inverting driver output and receiver input; ±14 V rated, common mode input range -7 to 12 V. |
| 7 | B | bidirectional | Inverting driver output and receiver input; ±14 V rated, common mode input range -7 to 12 V. |
| 8 | VCC | power_in | Power supply; operating range 3.0 to 3.6 V, absolute maximum 7 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | SO-8 |
| Category | Interface |
| Pins | 8 |
CAD (KiCad official)
- Symbol:
ST4485EBDR - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SO-8 (KiCad packages3D, STEP)
- 3D model files:
st4485ebdr-etched.step/st4485ebdr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);st4485ebdr.step/st4485ebdr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: STMicroelectronics datasheet (18 pp, sha256
25a825ddfb7c7a4b, retrieved 2026-10-05, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-5-5(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).