# CD4051BQPWRQ1

**Texas Instruments** · Signal Switches, Multiplexers, Decoders · TSSOP-16

CD4051BQPWRQ1 from Texas Instruments, in a TSSOP-16. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | CH 4 IN/OUT | bidirectional | Channel 4 input/output for analog multiplexing signal path. |
| 2 | CH 6 IN/OUT | bidirectional | Channel 6 input/output for analog multiplexing signal path. |
| 3 | COM OUT/IN | bidirectional | Common output/input for analog signal routing through selected channel. |
| 4 | CH 7 IN/OUT | bidirectional | Channel 7 input/output for analog multiplexing signal path. |
| 5 | CH 5 IN/OUT | bidirectional | Channel 5 input/output for analog multiplexing signal path. |
| 6 | INH | input | Inhibit input to disable all channels; refer to Table 7-1. |
| 7 | VEE | power_in | Negative power supply input; voltage range ±3V to ±10V or 0V for single supply. |
| 8 | VSS | power_in | Ground reference (circuit common). |
| 9 | C | input | Binary channel select input C; refer to Table 7-1 for truth table. |
| 10 | B | input | Binary channel select input B; refer to Table 7-1 for truth table. |
| 11 | A | input | Binary channel select input A; refer to Table 7-1 for truth table. |
| 12 | CH 3 IN/OUT | bidirectional | Channel 3 input/output for analog multiplexing signal path. |
| 13 | CH 0 IN/OUT | bidirectional | Channel 0 input/output for analog multiplexing signal path. |
| 14 | CH 1 IN/OUT | bidirectional | Channel 1 input/output for analog multiplexing signal path. |
| 15 | CH 2 IN/OUT | bidirectional | Channel 2 input/output for analog multiplexing signal path. |
| 16 | VDD | power_in | Positive power supply input; voltage range 3V to 20V (recommended 3V to 20V). |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `CD4051BQPWRQ1`
- Footprint: `Package_SO:TSSOP-16_4.4x5mm_P0.65mm`
- 3D model: TSSOP-16 (KiCad packages3D, STEP)
- 3D model files: `cd4051bqpwrq1-etched.step` / `cd4051bqpwrq1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cd4051bqpwrq1.step` / `cd4051bqpwrq1.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/cd4051b-q1) (30 pp, sha256 `41898245dfd19718`, retrieved 2026-09-23, 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 0.2`, primary `claude-haiku-4-5-20251001` (text), consensus `claude-sonnet-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/cd4051bqpwrq1-datasheet.pdf)