# ST202EBDR

**STMicroelectronics** · RS232 ICs · SO-16

ST202EBDR from STMicroelectronics, in a SO-16. 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 | C1+ | passive | Positive terminal for first charge pump capacitor. |
| 2 | V+ | power_out | Doubled voltage terminal from internal charge pump. |
| 3 | C1- | passive | Negative terminal for first charge pump capacitor. |
| 4 | C2+ | passive | Positive terminal for second charge pump capacitor. |
| 5 | C2- | passive | Negative terminal for second charge pump capacitor. |
| 6 | V- | power_out | Inverted voltage terminal from internal charge pump. |
| 7 | T2OUT | output | Second transmitter RS-232 output; ±5 to ±9 V swing with 3 kΩ load to GND. |
| 8 | R2IN | input | Second receiver RS-232 input; ±30 V operating range. |
| 9 | R2OUT | output | Second receiver TTL/CMOS output; 0.4 V low, 3.5 to VCC-0.4 V high. |
| 10 | T2IN | input | Second transmitter TTL/CMOS input; 0.8 V low and 2 V high logic thresholds. |
| 11 | T1IN | input | First transmitter TTL/CMOS input; 0.8 V low and 2 V high logic thresholds. |
| 12 | R1OUT | output | First receiver TTL/CMOS output; 0.4 V low, 3.5 to VCC-0.4 V high. |
| 13 | R1IN | input | First receiver RS-232 input; ±30 V operating range. |
| 14 | T1OUT | output | First transmitter RS-232 output; ±5 to ±9 V swing with 3 kΩ load to GND. |
| 15 | GND | power_in | Ground reference potential. |
| 16 | VCC | power_in | Positive supply voltage; 5 V ± 10%, absolute maximum -0.3 to 6 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | SO-16 |
| Category | Interface |
| Pins | 16 |

## CAD (KiCad official)

- Symbol: `ST202EBDR`
- Footprint: `Package_SO:SOIC-16_3.9x9.9mm_P1.27mm`
- 3D model: SO-16 (KiCad packages3D, STEP)
- 3D model files: `st202ebdr-etched.step` / `st202ebdr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `st202ebdr.step` / `st202ebdr.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [STMicroelectronics datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588920636018741248) (18 pp, sha256 `68c78b0d87e518f1`, retrieved 2026-10-03, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-4-5-20251001` (text), consensus `claude-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).

[Datasheet PDF](docs/st202ebdr-datasheet.pdf)