# TMUX1309QBQBRQ1

**Texas Instruments** · Analog Switches, Multiplexers · DHVQFN-16-EP(2.5x3.5)

TMUX1309QBQBRQ1 from Texas Instruments, in a DHVQFN-16-EP(2.5x3.5). 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 | S0B | bidirectional | Multiplexer B source pin 0 supporting bidirectional signal paths (input or output). |
| 2 | S2B | bidirectional | Multiplexer B source pin 2 supporting bidirectional signal paths (input or output). |
| 3 | DB | bidirectional | Multiplexer B common drain pin supporting bidirectional signal paths (input or output). |
| 4 | S3B | bidirectional | Multiplexer B source pin 3 supporting bidirectional signal paths (input or output). |
| 5 | S1B | bidirectional | Multiplexer B source pin 1 supporting bidirectional signal paths (input or output). |
| 6 | EN | input | Low-level valid logic input; all switches disabled when high, A[1:0] address selects active switch when low. |
| 7 | N.C. | unconnected | No internal connection. |
| 8 | GND | power_in | Ground (0V) reference for device operation. |
| 9 | A1 | input | Address line 1 for address selection controlling which switch is active per truth table (Table 8-2). |
| 10 | A0 | input | Address line 0 for address selection controlling which switch is active per truth table (Table 8-2). |
| 11 | S3A | bidirectional | Multiplexer A source pin 3 supporting bidirectional signal paths (input or output). |
| 12 | S0A | bidirectional | Multiplexer A source pin 0 supporting bidirectional signal paths (input or output). |
| 13 | DA | bidirectional | Multiplexer A common drain pin supporting bidirectional signal paths (input or output). |
| 14 | S1A | bidirectional | Multiplexer A source pin 1 supporting bidirectional signal paths (input or output). |
| 15 | S2A | bidirectional | Multiplexer A source pin 2 supporting bidirectional signal paths (input or output). |
| 16 | VDD | power_in | Positive power supply voltage range 1.62V to 5.5V; connect 0.1µF to 10µF bypass capacitor between VDD and GND. |
| 17 | Thermal Pad | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | DHVQFN-16-EP(2.5x3.5) |
| Category | Interface |
| Pins | 17 |

## CAD (KiCad official)

- Symbol: `TMUX1309QBQBRQ1`
- Footprint: `Package_DFN_QFN:DHVQFN-16-1EP_2.5x3.5mm_P0.5mm_EP1x2mm`
- 3D model: DHVQFN-16-EP(2.5x3.5), generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 0.9 mm nominal VQFN height). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions are nominal, not the manufacturer's CAD (STEP)
- 3D model files: `tmux1309qbqbrq1-etched.step` / `tmux1309qbqbrq1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tmux1309qbqbrq1.step` / `tmux1309qbqbrq1.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/tmux1309-q1) (51 pp, sha256 `eaf141da641fd985`, retrieved 2026-10-01, 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 0.3`, 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/tmux1309qbqbrq1-datasheet.pdf)