# SN74LVC126AQDRQ1

**Texas Instruments** · Buffers, Drivers, Receivers, Transceivers · SOIC-14

SN74LVC126AQDRQ1 from Texas Instruments, in a SOIC-14. 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 gate 1; when low, output 1Y is disabled and goes to high impedance. |
| 2 | 1A | input | Gate 1 input, which accepts 0 V to 5.5 V per the recommended operating conditions. |
| 3 | 1Y | tri_state | Gate 1 three-state output, which is high impedance when 1OE is low. |
| 4 | 2OE | input | Output enable for gate 2; when low, output 2Y is disabled and goes to high impedance. |
| 5 | 2A | input | Gate 2 input, which accepts 0 V to 5.5 V per the recommended operating conditions. |
| 6 | 2Y | tri_state | Gate 2 three-state output, which is high impedance when 2OE is low. |
| 7 | GND | power_in | Ground pin; the datasheet requires GND as the device reference. |
| 8 | 3Y | tri_state | Gate 3 three-state output, which is high impedance when 3OE is low. |
| 9 | 3A | input | Gate 3 input, which accepts 0 V to 5.5 V per the recommended operating conditions. |
| 10 | 3OE | input | Output enable for gate 3; when low, output 3Y is disabled and goes to high impedance. |
| 11 | 4Y | tri_state | Gate 4 three-state output, which is high impedance when 4OE is low. |
| 12 | 4A | input | Gate 4 input, which accepts 0 V to 5.5 V per the recommended operating conditions. |
| 13 | 4OE | input | Output enable for gate 4; when low, output 4Y is disabled and goes to high impedance. |
| 14 | VCC | power_in | Supply pin; the datasheet specifies an operating range of 1.65 V to 3.6 V and requires a bypass capacitor close to the pin. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-14 |
| Category | Logic |
| Pins | 14 |

## CAD (KiCad official)

- Symbol: `SN74LVC126AQDRQ1`
- Footprint: `Package_SO:SOIC-14_3.9x8.7mm_P1.27mm`
- 3D model: SOIC-14 (KiCad packages3D, STEP)
- 3D model files: `sn74lvc126aqdrq1-etched.step` / `sn74lvc126aqdrq1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sn74lvc126aqdrq1.step` / `sn74lvc126aqdrq1.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/cn/lit/gpn/sn74lvc126a-q1) (26 pp, sha256 `eeb9f93c78359a57`, retrieved 2026-10-11, 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`, 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/sn74lvc126aqdrq1-datasheet.pdf)