# TMUXHS221NKGT

**Texas Instruments** · Analog Switches, Multiplexers · UQFN-10(1.4x1.8)

TMUXHS221NKGT from Texas Instruments, in a UQFN-10(1.4x1.8). 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 | D+ | bidirectional | Common port positive bidirectional data signal, 5 V tolerant, -0.3 to 3.6 V operating range. |
| 2 | D- | bidirectional | Common port negative bidirectional data signal, 5 V tolerant, -0.3 to 3.6 V operating range. |
| 3 | GND | power_in | Ground return connection. |
| 4 | DA- | bidirectional | Port A negative bidirectional data signal, -0.3 to 3.6 V operating range. |
| 5 | DA+ | bidirectional | Port A positive bidirectional data signal, -0.3 to 3.6 V operating range. |
| 6 | DB- | bidirectional | Port B negative bidirectional data signal, -0.3 to 3.6 V operating range. |
| 7 | DB+ | bidirectional | Port B positive bidirectional data signal, -0.3 to 3.6 V operating range. |
| 8 | OEn | input | Output enable control input, active-low; L enables active mode, H disables with Hi-Z output, VIH ≥ 1.4 V, VIL ≤ 0.4 V. |
| 9 | VCC | power_in | 3.3 V positive power supply, 3.0 to 3.6 V recommended operating range. |
| 10 | SEL | input | Multiplexer select control input; L routes D to DA, H routes D to DB, VIH ≥ 1.4 V, VIL ≤ 0.4 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | UQFN-10(1.4x1.8) |
| Category | Interface |
| Pins | 10 |

## CAD (KiCad official)

- Symbol: `TMUXHS221NKGT`
- Footprint: `Package_DFN_QFN:UQFN-10_1.4x1.8mm_P0.4mm`
- 3D model: UQFN-10(1.4x1.8) (KiCad packages3D, STEP)
- 3D model files: `tmuxhs221nkgt-etched.step` / `tmuxhs221nkgt-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tmuxhs221nkgt.step` / `tmuxhs221nkgt.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Texas Instruments datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603377948561469440) (23 pp, sha256 `b1abb024882b6f9b`, retrieved 2026-10-05, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-4-5-20251001` (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/tmuxhs221nkgt-datasheet.pdf)