# RS0108XQ20-Q1

**Jiangsu RUNIC Tech** · Translators, Level Shifters · TSSOP-20

RS0108XQ20-Q1 from Jiangsu RUNIC Tech, in a TSSOP-20. 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 | A1 | bidirectional | Input/output A1, referenced to VCCA (A-port I/O). |
| 2 | VCCA | power_in | A-port supply voltage; must satisfy 1.65 V ≤ VCCA ≤ 5.5 V and VCCA ≤ VCCB. |
| 3 | A2 | bidirectional | Input/output A2, referenced to VCCA (A-port I/O). |
| 4 | A3 | bidirectional | Input/output A3, referenced to VCCA (A-port I/O). |
| 5 | A4 | bidirectional | Input/output A4, referenced to VCCA (A-port I/O). |
| 6 | A5 | bidirectional | Input/output A5, referenced to VCCA (A-port I/O). |
| 7 | A6 | bidirectional | Input/output A6, referenced to VCCA (A-port I/O). |
| 8 | A7 | bidirectional | Input/output A7, referenced to VCCA (A-port I/O). |
| 9 | A8 | bidirectional | Input/output A8, referenced to VCCA (A-port I/O). |
| 10 | OE | input | Active-high output enable, referenced to VCCA; pulling OE low places all outputs in 3-state mode. |
| 11 | GND | power_in | Ground reference for the device. |
| 12 | B8 | bidirectional | Input/output B8, referenced to VCCB (B-port I/O). |
| 13 | B7 | bidirectional | Input/output B7, referenced to VCCB (B-port I/O). |
| 14 | B6 | bidirectional | Input/output B6, referenced to VCCB (B-port I/O). |
| 15 | B5 | bidirectional | Input/output B5, referenced to VCCB (B-port I/O). |
| 16 | B4 | bidirectional | Input/output B4, referenced to VCCB (B-port I/O). |
| 17 | B3 | bidirectional | Input/output B3, referenced to VCCB (B-port I/O). |
| 18 | B2 | bidirectional | Input/output B2, referenced to VCCB (B-port I/O). |
| 19 | VCCB | power_in | B-port supply voltage; must satisfy 2.3 V ≤ VCCB ≤ 5.5 V. |
| 20 | B1 | bidirectional | Input/output B1, referenced to VCCB (B-port I/O). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Jiangsu RUNIC Tech |
| Package | TSSOP-20 |
| Category | Logic |
| Pins | 20 |

## CAD (KiCad official)

- Symbol: `RS0108XQ20-Q1`
- Footprint: `Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm`
- 3D model: TSSOP-20 (KiCad packages3D, STEP)
- 3D model files: `rs0108xq20-q1-etched.step` / `rs0108xq20-q1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `rs0108xq20-q1.step` / `rs0108xq20-q1.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Jiangsu RUNIC Tech datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8602920185502179328) (25 pp, sha256 `bb7b5b64c965a1e5`, retrieved 2026-10-09, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (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/rs0108xq20-q1-datasheet.pdf)