# TC74HC4052AFT

**TOSHIBA** · Signal Switches, Multiplexers, Decoders · TSSOP-16

TC74HC4052AFT from TOSHIBA, 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 | 0Y | bidirectional | Y-bank switch terminal 0. Analog input/output of Y multiplexer channel 0; connected to Y-COM when A=L, B=L and INH=L. |
| 2 | 2Y | bidirectional | Y-bank switch terminal 2. Analog input/output of Y multiplexer channel 2; connected to Y-COM when A=L, B=H and INH=L. |
| 3 | Y-COM | bidirectional | Y-bank common terminal. Analog input/output shared by the Y-side 4:1 switch; routed to 0Y/1Y/2Y/3Y per the address (A,B) selection when INH=L. |
| 4 | 3Y | bidirectional | Y-bank switch terminal 3. Analog input/output of Y multiplexer channel 3; connected to Y-COM when A=H, B=H and INH=L. |
| 5 | 1Y | bidirectional | Y-bank switch terminal 1. Analog input/output of Y multiplexer channel 1; connected to Y-COM when A=H, B=L and INH=L. |
| 6 | INH | input | Active-high inhibit (enable) input. When INH=H all analog switches are OFF (both X and Y banks disconnected); when INH=L the address inputs A,B select the ON channel. Digital input referenced to VCC/GND (0 to VCC). |
| 7 | VEE | power_in | Negative analog supply for the switch bodies. Sets the low limit of the analog signal range; operating range -6 to 0 V, and VCC-VEE must be 2 to 12 V. Tie to GND for unipolar (0..VCC) operation. |
| 8 | GND | power_in | Digital ground / logic reference (0 V). Reference for the control inputs A, B, C (unused on 4052) and INH. |
| 9 | B | input | Address (select) input B - the MSB of the 2-bit channel select shared by both X and Y banks. Digital logic input referenced to VCC/GND. See Truth Table for A,B → channel mapping. |
| 10 | A | input | Address (select) input A - the LSB of the 2-bit channel select shared by both X and Y banks. Digital logic input referenced to VCC/GND. See Truth Table for A,B → channel mapping. |
| 11 | 3X | bidirectional | X-bank switch terminal 3. Analog input/output of X multiplexer channel 3; connected to X-COM when A=H, B=H and INH=L. |
| 12 | 0X | bidirectional | X-bank switch terminal 0. Analog input/output of X multiplexer channel 0; connected to X-COM when A=L, B=L and INH=L. |
| 13 | X-COM | bidirectional | X-bank common terminal. Analog input/output shared by the X-side 4:1 switch; routed to 0X/1X/2X/3X per the address (A,B) selection when INH=L. |
| 14 | 1X | bidirectional | X-bank switch terminal 1. Analog input/output of X multiplexer channel 1; connected to X-COM when A=H, B=L and INH=L. |
| 15 | 2X | bidirectional | X-bank switch terminal 2. Analog input/output of X multiplexer channel 2; connected to X-COM when A=L, B=H and INH=L. |
| 16 | VCC | power_in | Positive digital / analog supply, 2 V to 6 V (VCC-VEE ≤ 12 V). Powers the internal logic and sets the upper limit of the analog signal range. Bypass locally with a 0.1 µF ceramic to GND. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | TOSHIBA |
| Package | TSSOP-16 |
| Category | Logic |
| Pins | 16 |

## Ordering variants

Same part, different packaging or reel option.

- `TC74HC4052AFT`
- `TC74HC4052AFTAP`

## CAD (KiCad official)

- Symbol: `TC74HC4052AFT`
- Footprint: `Package_SO:TSSOP-16_4.4x5mm_P0.65mm`
- 3D model: TSSOP-16 (KiCad packages3D, STEP)
- 3D model files: `tc74hc4052aft-etched.step` / `tc74hc4052aft-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tc74hc4052aft.step` / `tc74hc4052aft.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [TOSHIBA datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588908257523453952) (14 pp, sha256 `17928eda0541281c`, retrieved 2026-08-17, tier: lcsc)
- **Extractor:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/tc74hc4052aft-datasheet.pdf)