# SN74LV4051ATDREP

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

SN74LV4051ATDREP from Texas Instruments, in a SOIC-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 | passive | Analog switch terminal for channel 4, selected when INH is low and C=H, B=L, A=L; each channel passes signals up to 5.5 V (peak) in either direction. |
| 2 | Y6 | passive | Analog switch terminal for channel 6, selected when INH is low and C=H, B=H, A=L; each channel passes signals up to 5.5 V (peak) in either direction. |
| 3 | COM | passive | Common analog switch terminal that connects to the selected channel when INH is low; switch I/O voltage is limited to −0.5 V to VCC + 0.5 V and switch through current to ±25 mA. |
| 4 | Y7 | passive | Analog switch terminal for channel 7, selected when INH is low and C=H, B=H, A=H; each channel passes signals up to 5.5 V (peak) in either direction. |
| 5 | Y5 | passive | Analog switch terminal for channel 5, selected when INH is low and C=H, B=L, A=H; each channel passes signals up to 5.5 V (peak) in either direction. |
| 6 | INH | input | Active-high inhibit control; when high, all switches are open and no channel is selected, with control inputs rated 0 V to 5.5 V. |
| 7 | GND | power_in | Ground reference pin for the device. |
| 8 | GND | power_in | Ground reference pin for the device (second GND pin, tied with pin 7 in the datasheet figure). |
| 9 | C | input | Most significant channel-select bit, used with B and A to choose one of the eight channels; control input rated 0 V to 5.5 V. |
| 10 | B | input | Middle channel-select bit, used with C and A to choose one of the eight channels; control input rated 0 V to 5.5 V. |
| 11 | A | input | Least significant channel-select bit, used with C and B to choose one of the eight channels; control input rated 0 V to 5.5 V. |
| 12 | Y3 | passive | Analog switch terminal for channel 3, selected when INH is low and C=L, B=H, A=H; each channel passes signals up to 5.5 V (peak) in either direction. |
| 13 | Y0 | passive | Analog switch terminal for channel 0, selected when INH is low and C=L, B=L, A=L; each channel passes signals up to 5.5 V (peak) in either direction. |
| 14 | Y1 | passive | Analog switch terminal for channel 1, selected when INH is low and C=L, B=L, A=H; each channel passes signals up to 5.5 V (peak) in either direction. |
| 15 | Y2 | passive | Analog switch terminal for channel 2, selected when INH is low and C=L, B=H, A=L; each channel passes signals up to 5.5 V (peak) in either direction. |
| 16 | VCC | power_in | Positive supply pin; the datasheet specifies VCC of 2 V to 5.5 V. |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `SN74LV4051ATDREP`
- Footprint: `Package_SO:SOIC-16_3.9x9.9mm_P1.27mm`
- 3D model: SOIC-16 (KiCad packages3D, STEP)
- 3D model files: `sn74lv4051atdrep-etched.step` / `sn74lv4051atdrep-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sn74lv4051atdrep.step` / `sn74lv4051atdrep.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-ep) (18 pp, sha256 `e0d1dea88834f97c`, retrieved 2026-10-08, 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/sn74lv4051atdrep-datasheet.pdf)