# SN74CBT3384APWR

**Texas Instruments** · Signal Switches, Multiplexers, Decoders · TSSOP-24

SN74CBT3384APWR 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 | Active-low output enable for the first 5-bit switch; low connects 1A to 1B, high opens the switch (high impedance). |
| 2 | 1B1 | bidirectional | Port B bit 1 of the first 5-bit switch, connected to 1A1 through a 5-Ω switch when 1OE is low. |
| 3 | 1A1 | bidirectional | Port A bit 1 of the first 5-bit switch, connected to 1B1 when 1OE is low. |
| 4 | 1A2 | bidirectional | Port A bit 2 of the first 5-bit switch, connected to 1B2 when 1OE is low. |
| 5 | 1B2 | bidirectional | Port B bit 2 of the first 5-bit switch, connected to 1A2 when 1OE is low. |
| 6 | 1B3 | bidirectional | Port B bit 3 of the first 5-bit switch, connected to 1A3 when 1OE is low. |
| 7 | 1A3 | bidirectional | Port A bit 3 of the first 5-bit switch, connected to 1B3 when 1OE is low. |
| 8 | 1A4 | bidirectional | Port A bit 4 of the first 5-bit switch, connected to 1B4 when 1OE is low. |
| 9 | 1B4 | bidirectional | Port B bit 4 of the first 5-bit switch, connected to 1A4 when 1OE is low. |
| 10 | 1B5 | bidirectional | Port B bit 5 of the first 5-bit switch, connected to 1A5 when 1OE is low. |
| 11 | 1A5 | bidirectional | Port A bit 5 of the first 5-bit switch, connected to 1B5 when 1OE is low. |
| 12 | GND | power_in | Ground. |
| 13 | 2OE | input | Active-low output enable for the second 5-bit switch; low connects 2A to 2B, high opens the switch (high impedance). |
| 14 | 2A1 | bidirectional | Port A bit 1 of the second 5-bit switch, connected to 2B1 when 2OE is low. |
| 15 | 2B1 | bidirectional | Port B bit 1 of the second 5-bit switch, connected to 2A1 when 2OE is low. |
| 16 | 2B2 | bidirectional | Port B bit 2 of the second 5-bit switch, connected to 2A2 when 2OE is low. |
| 17 | 2A2 | bidirectional | Port A bit 2 of the second 5-bit switch, connected to 2B2 when 2OE is low. |
| 18 | 2A3 | bidirectional | Port A bit 3 of the second 5-bit switch, connected to 2B3 when 2OE is low. |
| 19 | 2B3 | bidirectional | Port B bit 3 of the second 5-bit switch, connected to 2A3 when 2OE is low. |
| 20 | 2B4 | bidirectional | Port B bit 4 of the second 5-bit switch, connected to 2A4 when 2OE is low. |
| 21 | 2A4 | bidirectional | Port A bit 4 of the second 5-bit switch, connected to 2B4 when 2OE is low. |
| 22 | 2A5 | bidirectional | Port A bit 5 of the second 5-bit switch, connected to 2B5 when 2OE is low. |
| 23 | 2B5 | bidirectional | Port B bit 5 of the second 5-bit switch, connected to 2A5 when 2OE is low. |
| 24 | VCC | power_in | Supply voltage, recommended 4 V to 5.5 V (absolute maximum −0.5 V to 7 V). |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `SN74CBT3384APWR`
- Footprint: `Package_SO:TSSOP-24_4.4x7.8mm_P0.65mm`
- 3D model: TSSOP-24 (KiCad packages3D, STEP)
- 3D model files: `sn74cbt3384apwr-etched.step` / `sn74cbt3384apwr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sn74cbt3384apwr.step` / `sn74cbt3384apwr.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/sn74cbt3384a.pdf) (19 pp, sha256 `5bdd0c6c2aaed403`, retrieved 2026-10-07, 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/sn74cbt3384apwr-datasheet.pdf)