# SN74CB3Q3384ADBQR

**Texas Instruments** · Signal Switches, Multiplexers, Decoders · SSOP-24-150mil

SN74CB3Q3384ADBQR from Texas Instruments, in a SSOP-24-150mil. 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 group (1A1-1A5 to 1B1-1B5); when low the group is on, when high the A and B ports are disconnected (high impedance), and OE must be pulled up to VCC per the datasheet. |
| 2 | 1B1 | bidirectional | B-side data I/O of switch 1 that connects to 1A1 when 1OE is low; data I/O supports 0 to 5.5 V recommended operating voltage. |
| 3 | 1A1 | bidirectional | A-side data I/O of switch 1 that connects to 1B1 when 1OE is low; data I/O supports 0 to 5.5 V recommended operating voltage. |
| 4 | 1A2 | bidirectional | A-side data I/O of switch 2 that connects to 1B2 when 1OE is low; data I/O supports 0 to 5.5 V recommended operating voltage. |
| 5 | 1B2 | bidirectional | B-side data I/O of switch 2 that connects to 1A2 when 1OE is low; data I/O supports 0 to 5.5 V recommended operating voltage. |
| 6 | 1B3 | bidirectional | B-side data I/O of switch 3 that connects to 1A3 when 1OE is low; data I/O supports 0 to 5.5 V recommended operating voltage. |
| 7 | 1A3 | bidirectional | A-side data I/O of switch 3 that connects to 1B3 when 1OE is low; data I/O supports 0 to 5.5 V recommended operating voltage. |
| 8 | 1A4 | bidirectional | A-side data I/O of switch 4 that connects to 1B4 when 1OE is low; data I/O supports 0 to 5.5 V recommended operating voltage. |
| 9 | 1B4 | bidirectional | B-side data I/O of switch 4 that connects to 1A4 when 1OE is low; data I/O supports 0 to 5.5 V recommended operating voltage. |
| 10 | 1B5 | bidirectional | B-side data I/O of switch 5 that connects to 1A5 when 1OE is low; data I/O supports 0 to 5.5 V recommended operating voltage. |
| 11 | 1A5 | bidirectional | A-side data I/O of switch 5 that connects to 1B5 when 1OE is low; data I/O supports 0 to 5.5 V recommended operating voltage. |
| 12 | GND | power_in | Ground reference for all device voltages; all voltages are referenced to ground. |
| 13 | 2OE | input | Active-low output enable for the second 5-bit switch group (2A1-2A5 to 2B1-2B5); when low the group is on, when high the A and B ports are high impedance, and OE must be pulled up to VCC per the datasheet. |
| 14 | 2A1 | bidirectional | A-side data I/O of switch 6 that connects to 2B1 when 2OE is low; data I/O supports 0 to 5.5 V recommended operating voltage. |
| 15 | 2B1 | bidirectional | B-side data I/O of switch 6 that connects to 2A1 when 2OE is low; data I/O supports 0 to 5.5 V recommended operating voltage. |
| 16 | 2B2 | bidirectional | B-side data I/O of switch 7 that connects to 2A2 when 2OE is low; data I/O supports 0 to 5.5 V recommended operating voltage. |
| 17 | 2A2 | bidirectional | A-side data I/O of switch 7 that connects to 2B2 when 2OE is low; data I/O supports 0 to 5.5 V recommended operating voltage. |
| 18 | 2A3 | bidirectional | A-side data I/O of switch 8 that connects to 2B3 when 2OE is low; data I/O supports 0 to 5.5 V recommended operating voltage. |
| 19 | 2B3 | bidirectional | B-side data I/O of switch 8 that connects to 2A3 when 2OE is low; data I/O supports 0 to 5.5 V recommended operating voltage. |
| 20 | 2B4 | bidirectional | B-side data I/O of switch 9 that connects to 2A4 when 2OE is low; data I/O supports 0 to 5.5 V recommended operating voltage. |
| 21 | 2A4 | bidirectional | A-side data I/O of switch 9 that connects to 2B4 when 2OE is low; data I/O supports 0 to 5.5 V recommended operating voltage. |
| 22 | 2A5 | bidirectional | A-side data I/O of switch 10 that connects to 2B5 when 2OE is low; data I/O supports 0 to 5.5 V recommended operating voltage. |
| 23 | 2B5 | bidirectional | B-side data I/O of switch 10 that connects to 2A5 when 2OE is low; data I/O supports 0 to 5.5 V recommended operating voltage. |
| 24 | VCC | power_in | Supply voltage, recommended range 2.3 V to 3.6 V (absolute maximum 4.6 V). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SSOP-24-150mil |
| Category | Logic |
| Pins | 24 |

## CAD (KiCad official)

- Symbol: `SN74CB3Q3384ADBQR`
- Footprint: `Package_SO:SSOP-24_5.3x8.2mm_P0.65mm`
- 3D model: SSOP-24-150mil (KiCad packages3D, STEP)
- 3D model files: `sn74cb3q3384adbqr-etched.step` / `sn74cb3q3384adbqr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sn74cb3q3384adbqr.step` / `sn74cb3q3384adbqr.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/sn74cb3q3384a) (22 pp, sha256 `51bc27fb71e43a34`, retrieved 2026-10-08, 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-5-5` (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/sn74cb3q3384adbqr-datasheet.pdf)