# SN74CBTD3384PWR

**Texas Instruments** · Analog Switches, Multiplexers · TSSOP-24

SN74CBTD3384PWR from Texas Instruments, in a TSSOP-24. 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 | 1OE | input | Output enable for 5-bit bus switch 1 (active low); when low connects 1A-1B with 5-7Ω on-state resistance, when high tri-states both ports. |
| 2 | 1B1 | bidirectional | Bidirectional bus switch terminal; connected to 1A1 when 1OE is low with 5-7Ω on-state resistance, high impedance when 1OE is high. |
| 3 | 1A1 | bidirectional | Bidirectional bus switch terminal; connected to 1B1 when 1OE is low with 5-7Ω on-state resistance, high impedance when 1OE is high. |
| 4 | 1A2 | bidirectional | Bidirectional bus switch terminal; connected to 1B2 when 1OE is low with 5-7Ω on-state resistance, high impedance when 1OE is high. |
| 5 | 1B2 | bidirectional | Bidirectional bus switch terminal; connected to 1A2 when 1OE is low with 5-7Ω on-state resistance, high impedance when 1OE is high. |
| 6 | 1B3 | bidirectional | Bidirectional bus switch terminal; connected to 1A3 when 1OE is low with 5-7Ω on-state resistance, high impedance when 1OE is high. |
| 7 | 1A3 | bidirectional | Bidirectional bus switch terminal; connected to 1B3 when 1OE is low with 5-7Ω on-state resistance, high impedance when 1OE is high. |
| 8 | 1A4 | bidirectional | Bidirectional bus switch terminal; connected to 1B4 when 1OE is low with 5-7Ω on-state resistance, high impedance when 1OE is high. |
| 9 | 1B4 | bidirectional | Bidirectional bus switch terminal; connected to 1A4 when 1OE is low with 5-7Ω on-state resistance, high impedance when 1OE is high. |
| 10 | 1B5 | bidirectional | Bidirectional bus switch terminal; connected to 1A5 when 1OE is low with 5-7Ω on-state resistance, high impedance when 1OE is high. |
| 11 | 1A5 | bidirectional | Bidirectional bus switch terminal; connected to 1B5 when 1OE is low with 5-7Ω on-state resistance, high impedance when 1OE is high. |
| 12 | GND | power_in | Ground reference (0V). |
| 13 | 2OE | input | Output enable for 5-bit bus switch 2 (active low); when low connects 2A-2B with 5-7Ω on-state resistance, when high tri-states both ports. |
| 14 | 2A1 | bidirectional | Bidirectional bus switch terminal; connected to 2B1 when 2OE is low with 5-7Ω on-state resistance, high impedance when 2OE is high. |
| 15 | 2B1 | bidirectional | Bidirectional bus switch terminal; connected to 2A1 when 2OE is low with 5-7Ω on-state resistance, high impedance when 2OE is high. |
| 16 | 2B2 | bidirectional | Bidirectional bus switch terminal; connected to 2A2 when 2OE is low with 5-7Ω on-state resistance, high impedance when 2OE is high. |
| 17 | 2A2 | bidirectional | Bidirectional bus switch terminal; connected to 2B2 when 2OE is low with 5-7Ω on-state resistance, high impedance when 2OE is high. |
| 18 | 2A3 | bidirectional | Bidirectional bus switch terminal; connected to 2B3 when 2OE is low with 5-7Ω on-state resistance, high impedance when 2OE is high. |
| 19 | 2B3 | bidirectional | Bidirectional bus switch terminal; connected to 2A3 when 2OE is low with 5-7Ω on-state resistance, high impedance when 2OE is high. |
| 20 | 2B4 | bidirectional | Bidirectional bus switch terminal; connected to 2A4 when 2OE is low with 5-7Ω on-state resistance, high impedance when 2OE is high. |
| 21 | 2A4 | bidirectional | Bidirectional bus switch terminal; connected to 2B4 when 2OE is low with 5-7Ω on-state resistance, high impedance when 2OE is high. |
| 22 | 2A5 | bidirectional | Bidirectional bus switch terminal; connected to 2B5 when 2OE is low with 5-7Ω on-state resistance, high impedance when 2OE is high. |
| 23 | 2B5 | bidirectional | Bidirectional bus switch terminal; connected to 2A5 when 2OE is low with 5-7Ω on-state resistance, high impedance when 2OE is high. |
| 24 | VCC | power_in | Positive supply voltage 4.5V to 5.5V nominal with integrated clamp diode to VCC for 5V-to-3.3V level-shifting. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | TSSOP-24 |
| Category | Interface |
| Pins | 24 |

## CAD (KiCad official)

- Symbol: `SN74CBTD3384PWR`
- Footprint: `Package_SO:TSSOP-24_4.4x7.8mm_P0.65mm`
- 3D model: TSSOP-24 (KiCad packages3D, STEP)
- 3D model files: `sn74cbtd3384pwr-etched.step` / `sn74cbtd3384pwr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sn74cbtd3384pwr.step` / `sn74cbtd3384pwr.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/sn74cbtd3384.pdf) (20 pp, sha256 `c4e99bf7cc128ba6`, retrieved 2026-09-29, tier: manufacturer)
- **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/sn74cbtd3384pwr-datasheet.pdf)