# TMUXHS221NKGR

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

TMUXHS221NKGR 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 data signal; bidirectional signal with voltage range -0.3 to 3.6 V, 5 V tolerant |
| 2 | D- | bidirectional | Common port negative data signal; bidirectional signal with voltage range -0.3 to 3.6 V, 5 V tolerant |
| 3 | GND | power_in | Ground reference |
| 4 | DA- | bidirectional | Port A negative data signal; bidirectional signal with voltage range -0.3 to 3.6 V, 5 V tolerant |
| 5 | DA+ | bidirectional | Port A positive data signal; bidirectional signal with voltage range -0.3 to 3.6 V, 5 V tolerant |
| 6 | DB- | bidirectional | Port B negative data signal; bidirectional signal with voltage range -0.3 to 3.6 V, 5 V tolerant |
| 7 | DB+ | bidirectional | Port B positive data signal; bidirectional signal with voltage range -0.3 to 3.6 V, 5 V tolerant |
| 8 | OEn | input | Output enable control, active low; control input with voltage range -0.3 to 4.0 V |
| 9 | VCC | power_in | 3.3 V power supply with recommended operating range 3.0 to 3.6 V |
| 10 | SEL | input | Mux configuration select control input with voltage range -0.3 to 4.0 V; selects D to DA (low) or D to DB (high) |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `TMUXHS221NKGR`
- Footprint: `Package_DFN_QFN:UQFN-10_1.4x1.8mm_P0.4mm`
- 3D model: UQFN-10(1.4x1.8) (KiCad packages3D, STEP)
- 3D model files: `tmuxhs221nkgr-etched.step` / `tmuxhs221nkgr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tmuxhs221nkgr.step` / `tmuxhs221nkgr.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/8597535848691228672) (23 pp, sha256 `b1abb024882b6f9b`, retrieved 2026-10-03, 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/tmuxhs221nkgr-datasheet.pdf)