# SN74LV4051APWG4

**Texas Instruments** · Analog Switches, Multiplexers · TSSOP-16

SN74LV4051APWG4 from Texas Instruments, in a TSSOP-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 | Y4 | bidirectional | Input/output channel 4 of multiplexer |
| 2 | Y6 | bidirectional | Input/output channel 6 of multiplexer |
| 3 | COM | bidirectional | Common input/output of multiplexer |
| 4 | Y7 | bidirectional | Input/output channel 7 of multiplexer |
| 5 | Y5 | bidirectional | Input/output channel 5 of multiplexer |
| 6 | INH | input | Output inhibit control; logic low enables outputs, logic high disables them |
| 7 | GND | power_in | Ground connection |
| 8 | GND | power_in | Ground connection |
| 9 | C | input | Selector line C for channel selection |
| 10 | B | input | Selector line B for channel selection |
| 11 | A | input | Selector line A for channel selection |
| 12 | Y3 | bidirectional | Input/output channel 3 of multiplexer |
| 13 | Y0 | bidirectional | Input/output channel 0 of multiplexer |
| 14 | Y1 | bidirectional | Input/output channel 1 of multiplexer |
| 15 | Y2 | bidirectional | Input/output channel 2 of multiplexer |
| 16 | VCC | power_in | Power supply voltage |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | TSSOP-16 |
| Category | Interface |
| Pins | 16 |

## CAD (KiCad official)

- Symbol: `SN74LV4051APWG4`
- Footprint: `Package_SO:TSSOP-16_4.4x5mm_P0.65mm`
- 3D model: TSSOP-16 (KiCad packages3D, STEP)
- 3D model files: `sn74lv4051apwg4-etched.step` / `sn74lv4051apwg4-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sn74lv4051apwg4.step` / `sn74lv4051apwg4.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/sn74lv4051a) (41 pp, sha256 `d7bc556a82624e5a`, retrieved 2026-10-05, 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-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/sn74lv4051apwg4-datasheet.pdf)