# CD74HC4066PWR

**Texas Instruments** · Analog Switches, Multiplexers · TSSOP-14

CD74HC4066PWR from Texas Instruments, in a TSSOP-14. 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 | 1Y | bidirectional | Analog switch input/output for Switch 1, conducts bidirectional signals when switch is ON |
| 2 | 1Z | bidirectional | Analog switch input/output for Switch 1, conducts bidirectional signals when switch is ON |
| 3 | 2Z | bidirectional | Analog switch input/output for Switch 2, conducts bidirectional signals when switch is ON |
| 4 | 2Y | bidirectional | Analog switch input/output for Switch 2, conducts bidirectional signals when switch is ON |
| 5 | 2E | input | Control input for Switch 2, high level turns switch ON, low level turns switch OFF |
| 6 | 3E | input | Control input for Switch 3, high level turns switch ON, low level turns switch OFF |
| 7 | GND | power_in | Ground, 0V reference potential for device operation |
| 8 | 3Y | bidirectional | Analog switch input/output for Switch 3, conducts bidirectional signals when switch is ON |
| 9 | 3Z | bidirectional | Analog switch input/output for Switch 3, conducts bidirectional signals when switch is ON |
| 10 | 4Z | bidirectional | Analog switch input/output for Switch 4, conducts bidirectional signals when switch is ON |
| 11 | 4Y | bidirectional | Analog switch input/output for Switch 4, conducts bidirectional signals when switch is ON |
| 12 | 4E | input | Control input for Switch 4, high level turns switch ON, low level turns switch OFF |
| 13 | 1E | input | Control input for Switch 1, high level turns switch ON, low level turns switch OFF |
| 14 | VCC | power_in | Positive power supply pin, 2V to 10V operating range for CD74HC4066 |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | TSSOP-14 |
| Category | Interface |
| Pins | 14 |

## CAD (KiCad official)

- Symbol: `CD74HC4066PWR`
- Footprint: `Package_SO:TSSOP-14_4.4x5mm_P0.65mm`
- 3D model: TSSOP-14 (KiCad packages3D, STEP)
- 3D model files: `cd74hc4066pwr-etched.step` / `cd74hc4066pwr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cd74hc4066pwr.step` / `cd74hc4066pwr.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/lit/ds/symlink/cd74hc4066.pdf) (25 pp, sha256 `1b48baacb6c14b35`, retrieved 2026-09-23, tier: manufacturer)
- **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/cd74hc4066pwr-datasheet.pdf)