# SN74LVC1G66DRLR

**Texas Instruments** · Analog Switches, Multiplexers · SOT-553-5

SN74LVC1G66DRLR from Texas Instruments, in a SOT-553-5. 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 | A | bidirectional | Bidirectional signal to be switched; signal amplitudes up to 5.5V peak |
| 2 | B | bidirectional | Bidirectional signal to be switched; signal amplitudes up to 5.5V peak |
| 3 | GND | power_in | Ground pin |
| 4 | C | input | Controls the switch (L = OFF, H = ON) |
| 5 | VCC | power_in | Power pin; 1.65V to 5.5V recommended operating voltage |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOT-553-5 |
| Category | Interface |
| Pins | 5 |

## CAD (KiCad official)

- Symbol: `SN74LVC1G66DRLR`
- Footprint: `Package_TO_SOT_SMD:SOT-553`
- 3D model: SOT-553-5 (KiCad packages3D, STEP)
- 3D model files: `sn74lvc1g66drlr-etched.step` / `sn74lvc1g66drlr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sn74lvc1g66drlr.step` / `sn74lvc1g66drlr.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/sn74lvc1g66.pdf) (44 pp, sha256 `423c8b724b9443f7`, retrieved 2026-10-01, 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/sn74lvc1g66drlr-datasheet.pdf)