# CD74HCT4067M

**Texas Instruments** · Signal Switches, Multiplexers, Decoders · SOIC-24-300mil

CD74HCT4067M from Texas Instruments, in a SOIC-24-300mil. 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 | COMMON | bidirectional | Common analog input/output terminal that connects to the selected channel via the internal multiplexer. |
| 2 | I7 | bidirectional | Analog channel input/output terminal; bidirectional analog line that switches to or from the common terminal. |
| 3 | I6 | bidirectional | Analog channel input/output terminal; bidirectional analog line that switches to or from the common terminal. |
| 4 | I5 | bidirectional | Analog channel input/output terminal; bidirectional analog line that switches to or from the common terminal. |
| 5 | I4 | bidirectional | Analog channel input/output terminal; bidirectional analog line that switches to or from the common terminal. |
| 6 | I3 | bidirectional | Analog channel input/output terminal; bidirectional analog line that switches to or from the common terminal. |
| 7 | I2 | bidirectional | Analog channel input/output terminal; bidirectional analog line that switches to or from the common terminal. |
| 8 | I1 | bidirectional | Analog channel input/output terminal; bidirectional analog line that switches to or from the common terminal. |
| 9 | I0 | bidirectional | Analog channel input/output terminal; bidirectional analog line that switches to or from the common terminal. |
| 10 | S0 | input | Binary select input; bit 0 of the 4-bit address code to select one of 16 analog channels. |
| 11 | S1 | input | Binary select input; bit 1 of the 4-bit address code to select one of 16 analog channels. |
| 12 | GND | power_in | Ground pin; negative power supply return. |
| 13 | S3 | input | Binary select input; bit 3 of the 4-bit address code to select one of 16 analog channels. |
| 14 | S2 | input | Binary select input; bit 2 of the 4-bit address code to select one of 16 analog channels. |
| 15 | E | input | Enable control input; logic high disables all analog switches for isolation, logic low enables the selected channel. |
| 16 | I15 | bidirectional | Analog channel input/output terminal; bidirectional analog line that switches to or from the common terminal. |
| 17 | I14 | bidirectional | Analog channel input/output terminal; bidirectional analog line that switches to or from the common terminal. |
| 18 | I13 | bidirectional | Analog channel input/output terminal; bidirectional analog line that switches to or from the common terminal. |
| 19 | I12 | bidirectional | Analog channel input/output terminal; bidirectional analog line that switches to or from the common terminal. |
| 20 | I11 | bidirectional | Analog channel input/output terminal; bidirectional analog line that switches to or from the common terminal. |
| 21 | I10 | bidirectional | Analog channel input/output terminal; bidirectional analog line that switches to or from the common terminal. |
| 22 | I9 | bidirectional | Analog channel input/output terminal; bidirectional analog line that switches to or from the common terminal. |
| 23 | I8 | bidirectional | Analog channel input/output terminal; bidirectional analog line that switches to or from the common terminal. |
| 24 | VCC | power_in | Power supply voltage input pin; operates at 4.5V to 5.5V for HCT variant. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-24-300mil |
| Category | Logic |
| Pins | 24 |

## CAD (KiCad official)

- Symbol: `CD74HCT4067M`
- Footprint: `Package_SO:SOIC-24W_7.5x15.4mm_P1.27mm`
- 3D model: SOIC-24-300mil (KiCad packages3D, STEP)
- 3D model files: `cd74hct4067m-etched.step` / `cd74hct4067m-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cd74hct4067m.step` / `cd74hct4067m.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/cd74hct4067) (30 pp, sha256 `e850e9dac84801b3`, retrieved 2026-09-26, 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-4-6` (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/cd74hct4067m-datasheet.pdf)