component
ST485ECDR-TD
Public Made by Adomby adom
TDSEMIC RS-485 / RS-422 ICs, SOP-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
markdownST485ECDR-TD
TDSEMIC · RS-485 / RS-422 ICs · SOP-8
ST485ECDR-TD from TDSEMIC, in a SOP-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 | output | Receiver output: RO is high when A is at least 200 mV above B and low when A is at least 200 mV below B, and it is high-impedance when RE is high. |
| 2 | RE | input | Receiver enable, active low; when RE is high the receiver output RO is high-impedance. |
| 3 | DE | input | Driver enable, active high; when DE is low the driver outputs are high-impedance, and when DE is high the device transmits (DE low with RE low puts it in receive mode). |
| 4 | DI | input | Driver data input: DI low drives A high and B low, and DI high drives the opposite. |
| 5 | GND | power_in | Ground, negative supply terminal. |
| 6 | A | bidirectional | Non-inverting receiver input and non-inverting driver output. |
| 7 | B | bidirectional | Inverting receiver input and inverting driver output. |
| 8 | VCC | power_in | Positive supply terminal. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | TDSEMIC |
| Package | SOP-8 |
| Category | Interface |
| Pins | 8 |
CAD (KiCad official)
- Symbol:
ST485ECDR-TD - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files:
st485ecdr-td-etched.step/st485ecdr-td-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);st485ecdr-td.step/st485ecdr-td.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: TDSEMIC datasheet (11 pp, sha256
e0f1e059df77b64f, retrieved 2026-10-09, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(vision), consensusclaude-opus-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).