# RS2G126XQ

**Jiangsu RUNIC Tech** · Buffer/Driver/Transceiver · TSSOP-8

RS2G126XQ from Jiangsu RUNIC Tech, in a TSSOP-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 | 1OE | input | Output enable for buffer 1; output 1Y is high-impedance when 1OE is low, and OE should be tied to GND through a pulldown resistor to ensure high-impedance during power up or power down. |
| 2 | 1A | input | Input of buffer 1; accepts voltages up to 5.5V and unused inputs must be held at VCC or GND. |
| 3 | 2Y | output | 3-state output of buffer 2 with ±24mA drive at VCC=3.0V. |
| 4 | GND | power_in | Ground pin. |
| 5 | 2A | input | Input of buffer 2; accepts voltages up to 5.5V and unused inputs must be held at VCC or GND. |
| 6 | 1Y | output | 3-state output of buffer 1 with ±24mA drive at VCC=3.0V. |
| 7 | 2OE | input | Output enable for buffer 2; output 2Y is high-impedance when 2OE is low, and OE should be tied to GND through a pulldown resistor to ensure high-impedance during power up or power down. |
| 8 | VCC | power_in | Power supply pin, operating range 1.65V to 5.5V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Jiangsu RUNIC Tech |
| Package | TSSOP-8 |
| Category | Logic ICs |
| Pins | 8 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Supply voltage, operating | VCC | 1.65 |  | 5.5 | V | Operating | 7 |
| Supply voltage, data retention only | VCC | 1.5 |  | 5.5 | V | Data retention only | 7 |
| High-level input voltage | VIH | 1.7 |  |  | V | VCC=2.3V to 2.7V | 7 |
| High-level input voltage | VIH | 2.2 |  |  | V | VCC=3V to 3.6V | 7 |
| Low-level input voltage | VIL |  |  | 0.3 | V | VCC=2.3V to 2.7V | 7 |
| Low-level input voltage | VIL |  |  | 0.4 | V | VCC=3V to 3.6V | 7 |
| Input voltage | VI | 0 |  | 5.5 | V |  | 7 |
| Output voltage | VO | 0 |  |  | V | max is VCC | 7 |
| Input transition rise or fall | tr, tf |  |  | 20 | ns/V | VCC=1.8V±0.15V, 2.5V±0.2V | 7 |
| Input transition rise or fall | tr, tf |  |  | 10 | ns/V | VCC=3.3V±0.3V | 7 |
| Input transition rise or fall | tr, tf |  |  | 5 | ns/V | VCC=5V±0.5V | 7 |
| Operating temperature | TA | -40 |  | 125 | °C |  | 7 |
| Supply voltage range | VCC | -0.5 |  | 6.5 | V |  | 6 |
| Input voltage range | VI | -0.5 |  | 6.5 | V |  | 6 |
| Output voltage, high-impedance or power-off state | Vo | -0.5 |  | 6.5 | V |  | 6 |
| Output voltage, high or low state | Vo | -0.5 |  |  | V | max VCC+0.5 | 6 |
| Input clamp current | IIK | -50 |  |  | mA | VI<0 | 6 |
| Output clamp current | IOK | -50 |  |  | mA | VO<0 | 6 |
| Continuous output current | IO | -50 |  | 50 | mA | ±50 | 6 |
| Continuous current through VCC or GND |  | -100 |  | 100 | mA | ±100 | 6 |
| Junction temperature | TJ | -65 |  | 150 | °C |  | 6 |
| Storage temperature | Tstg | -65 |  | 150 | °C |  | 6 |
| Package thermal impedance | θJA |  | 240 |  | °C/W | TSSOP-8 | 6 |
| ESD HBM | V(ESD) | -4000 |  | 4000 | V | Human-body model per ANSI/ESDA/JEDEC JS-001 | 6 |
| ESD MM | V(ESD) | -500 |  | 500 | V | Machine model | 6 |
| High-level output voltage | VOH | 1.2 |  |  | V | IOH=-4mA, VCC=1.65V, Full | 7 |
| High-level output voltage | VOH | 1.9 |  |  | V | IOH=-8mA, VCC=2.3V, Full | 7 |
| High-level output voltage | VOH | 2.4 |  |  | V | IOH=-16mA, VCC=3V, Full | 7 |
| High-level output voltage | VOH | 2.3 |  |  | V | IOH=-24mA, VCC=3V, Full | 7 |
| High-level output voltage | VOH | 3.8 |  |  | V | IOH=-32mA, VCC=4.5V, Full | 7 |
| Low-level output voltage | VOL |  |  | 0.1 | V | IOL=100μA, VCC=1.65V to 5.5V, Full | 7 |
| Low-level output voltage | VOL |  |  | 0.45 | V | IOL=4mA, VCC=1.65V, Full | 7 |
| Low-level output voltage | VOL |  |  | 0.3 | V | IOL=8mA, VCC=2.3V, Full | 7 |
| Low-level output voltage | VOL |  |  | 0.4 | V | IOL=16mA, VCC=3V, Full | 7 |
| Low-level output voltage | VOL |  |  | 0.55 | V | IOL=24mA, VCC=3V, Full | 7 |
| Input leakage current | II | -1 | 0.1 | 1 | µA | A or OE inputs, VI=5.5V or GND, VCC=0V to 5.5V, +25C | 7 |
| Input leakage current | II | -5 |  | 5 | µA | A or OE inputs, VI=5.5V or GND, VCC=0V to 5.5V, Full | 7 |
| Power-off leakage current | Ioff | -1 | 0.1 | 1 | µA | VI or VO=5.5V, VCC=0V, +25C | 7 |
| Power-off leakage current | Ioff | -10 |  | 10 | µA | VI or VO=5.5V, VCC=0V, Full | 7 |
| Off-state output current | IOZ |  |  | 10 | µA | VO=0V to 5.5V, VCC=3.6V, Full | 7 |
| Supply current | ICC |  | 0.1 | 1 | µA | VI=5.5V or GND, IO=0, VCC=1.65V to 5.5V, +25C | 7 |
| Supply current | ICC |  |  | 10 | µA | VI=5.5V or GND, IO=0, VCC=1.65V to 5.5V, Full | 7 |
| Additional supply current per input | ΔICC |  |  | 500 | µA | One input at VCC-0.6V, other inputs at VCC or GND, VCC=3V to 5.5V, Full | 7 |

## CAD (KiCad official)

- Symbol: `RS2G126XQ`
- Footprint: `Package_SO:TSSOP-8_3x3mm_P0.65mm`
- 3D model: TSSOP-8 (KiCad packages3D, STEP)
- 3D model files: `rs2g126xq-etched.step` / `rs2g126xq-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `rs2g126xq.step` / `rs2g126xq.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Jiangsu RUNIC Tech datasheet](docs/rs2g126xq-datasheet.pdf) (13 pp, sha256 `d9d8f9ed0dc0b9c3`, retrieved 2026-10-22, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-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/rs2g126xq-datasheet.pdf)