# SN74CBTLV3253DBQR

**Texas Instruments** · Signal Switches, Multiplexers, Decoders · SSOP-16-150mil

SN74CBTLV3253DBQR from Texas Instruments, in a SSOP-16-150mil. 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 | Output enable for channel 1, active low; when this input is high the channel 1 FET multiplexer/demultiplexer is disabled (disconnected). |
| 2 | S1 | input | Select input 1 for channel 1; together with S0 it chooses which B port (1B1 to 1B4) connects to port 1A, with S1 as the more significant bit per the function table. |
| 3 | 1B4 | bidirectional | Channel 1 data I/O 4; connects to port 1A when 1OE is low and S1 = H, S0 = H, with a typical 5 Ω switch on-state resistance. |
| 4 | 1B3 | bidirectional | Channel 1 data I/O 3; connects to port 1A when 1OE is low and S1 = H, S0 = L, with a typical 5 Ω switch on-state resistance. |
| 5 | 1B2 | bidirectional | Channel 1 data I/O 2; connects to port 1A when 1OE is low and S1 = L, S0 = H, with a typical 5 Ω switch on-state resistance. |
| 6 | 1B1 | bidirectional | Channel 1 data I/O 1; connects to port 1A when 1OE is low and S1 = L, S0 = L, with a typical 5 Ω switch on-state resistance. |
| 7 | 1A | bidirectional | Channel 1 common switch port, connected to the selected 1B port when 1OE is low; supports rail-to-rail switching per the features list. |
| 8 | GND | power_in | Ground reference for the device. |
| 9 | 2A | bidirectional | Channel 2 common switch port, connected to the selected 2B port when 2OE is low; supports rail-to-rail switching per the features list. |
| 10 | 2B1 | bidirectional | Channel 2 data I/O 1; connects to port 2A when 2OE is low and S1 = L, S0 = L, with a typical 5 Ω switch on-state resistance. |
| 11 | 2B2 | bidirectional | Channel 2 data I/O 2; connects to port 2A when 2OE is low and S1 = L, S0 = H, with a typical 5 Ω switch on-state resistance. |
| 12 | 2B3 | bidirectional | Channel 2 data I/O 3; connects to port 2A when 2OE is low and S1 = H, S0 = L, with a typical 5 Ω switch on-state resistance. |
| 13 | 2B4 | bidirectional | Channel 2 data I/O 4; connects to port 2A when 2OE is low and S1 = H, S0 = H, with a typical 5 Ω switch on-state resistance. |
| 14 | S0 | input | Select input 0 for the multiplexer, which selects the B port connected to port 2A together with S1 (channel 2 select, per the function table). |
| 15 | 2OE | input | Output enable for channel 2, active low; when this input is high the channel 2 FET multiplexer/demultiplexer is disabled (disconnected). |
| 16 | VCC | power_in | Supply voltage, recommended range 2.3 V to 3.6 V; a 0.1 µF bypass capacitor is recommended close to the pin. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SSOP-16-150mil |
| Category | Logic |
| Pins | 16 |

## CAD (KiCad official)

- Symbol: `SN74CBTLV3253DBQR`
- Footprint: `Package_SO:SSOP-16_5.3x6.2mm_P0.65mm`
- 3D model: SSOP-16-150mil (KiCad packages3D, STEP)
- 3D model files: `sn74cbtlv3253dbqr-etched.step` / `sn74cbtlv3253dbqr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sn74cbtlv3253dbqr.step` / `sn74cbtlv3253dbqr.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/sn74cbtlv3253) (37 pp, sha256 `b74dead2aecd3e4d`, 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/sn74cbtlv3253dbqr-datasheet.pdf)