component
ST490ABDR
Public Made by Adomby adom
STMicroelectronics RS-485 / RS-422 ICs, 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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README
markdownST490ABDR
STMicroelectronics · RS-485 / RS-422 ICs · SOIC-8
ST490ABDR from STMicroelectronics, 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 | VCC | power_in | Supply voltage input operating from 4.5V to 5.5V nominal with maximum supply current of 5mA. |
| 2 | RO | output | Receiver output providing TTL/CMOS compatible logic with VOH 3.5-4.7V and VOL 0.2-0.4V. |
| 3 | DI | input | Driver input accepting TTL/CMOS logic with VIL 0.8V and VIH 2.0V thresholds. |
| 4 | GND | power_in | Ground reference potential. |
| 5 | Y | output | Non-inverting RS-485 driver output providing 2-3V differential voltage into 100Ω load with -7.5V to 12.5V range. |
| 6 | Z | output | Inverting RS-485 driver output complementary to Y providing 2-3V differential voltage into 100Ω load with -7.5V to 12.5V range. |
| 7 | B | input | Inverting RS-485 receiver input rated for -7.5V to 12.5V with 12-24kΩ input impedance. |
| 8 | A | input | Non-inverting RS-485 receiver input rated for -7.5V to 12.5V with 12-24kΩ input impedance. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | SOIC-8 |
| Category | Interface |
| Pins | 8 |
CAD (KiCad official)
- Symbol:
ST490ABDR - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files:
st490abdr-etched.step/st490abdr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);st490abdr.step/st490abdr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: STMicroelectronics datasheet (17 pp, sha256
18c20870bee4b925, retrieved 2026-09-23, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.2, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-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).