# TXB0104DR

**Texas Instruments** · Translators / Level Shifters · SOIC-14

TXB0104DR from Texas Instruments, in a SOIC-14. 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 | VCCA | power_in | A-port supply voltage. 1.2V <= VCCA <= 3.6V and VCCA <= VCCB. Also supplies the OE input circuit. |
| 2 | A1 | bidirectional | Input/output 1 on the A port. Referenced to VCCA. Auto-sensing bidirectional level-translated I/O to B1. |
| 3 | A2 | bidirectional | Input/output 2 on the A port. Referenced to VCCA. Auto-sensing bidirectional level-translated I/O to B2. |
| 4 | A3 | bidirectional | Input/output 3 on the A port. Referenced to VCCA. Auto-sensing bidirectional level-translated I/O to B3. |
| 5 | A4 | bidirectional | Input/output 4 on the A port. Referenced to VCCA. Auto-sensing bidirectional level-translated I/O to B4. |
| 6 | NC | unconnected | No connection. Not internally connected. |
| 7 | GND | power_in | Ground reference for the device. |
| 8 | OE | input | Tri-state output-mode enable, referenced to VCCA. Pull OE low to place all outputs in high-impedance (tri-state) mode; a pulldown resistor to GND is recommended to ensure Hi-Z during power up/down. |
| 9 | NC | unconnected | No connection. Not internally connected. |
| 10 | B4 | bidirectional | Input/output 4 on the B port. Referenced to VCCB. Auto-sensing bidirectional level-translated I/O to A4. |
| 11 | B3 | bidirectional | Input/output 3 on the B port. Referenced to VCCB. Auto-sensing bidirectional level-translated I/O to A3. |
| 12 | B2 | bidirectional | Input/output 2 on the B port. Referenced to VCCB. Auto-sensing bidirectional level-translated I/O to A2. |
| 13 | B1 | bidirectional | Input/output 1 on the B port. Referenced to VCCB. Auto-sensing bidirectional level-translated I/O to A1. |
| 14 | VCCB | power_in | B-port supply voltage. 1.65V <= VCCB <= 5.5V. Must be greater than or equal to VCCA. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-14 |
| Category | Logic |
| Pins | 14 |

## Ordering variants

Same part, different packaging or reel option.

- `TXB0104DRD`
- `TXB0104DR`
- `TXB0104DRPW`
- `TXB0104DRPWR`
- `TXB0104DRDYY`
- `TXB0104DRDYYR`
- `TXB0104DRRGY`
- `TXB0104DRRGYR`
- `TXB0104DRBQA`
- `TXB0104DRBQAR`
- `TXB0104DRRUT`
- `TXB0104DRRUTR`
- `TXB0104DRGXU`
- `TXB0104DRZXU`
- `TXB0104DRGXUR`
- `TXB0104DRZXUR`
- `TXB0104DRNMN`
- `TXB0104DRNMNR`
- `TXB0104DRYZT`
- `TXB0104DRYZTR`

## CAD (KiCad official)

- Symbol: `TXB0104DR`
- Footprint: `Package_SO:SOIC-14_3.9x8.7mm_P1.27mm`
- 3D model: SOIC-14 (KiCad packages3D, STEP)
- 3D model files: `txb0104dr-etched.step` / `txb0104dr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `txb0104dr.step` / `txb0104dr.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/lit/ds/symlink/txb0104.pdf) (55 pp, sha256 `9a852f7bcc4104df`, retrieved 2026-08-17, tier: manufacturer)
- **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/txb0104dr-datasheet.pdf)