ADA5663 · AdafruitActive
Adafruit product #5663 — built on PCA9546. Interfaces: I2C.
| Part number | ADA5663 |
|---|---|
| Manufacturer | Adafruit |
| Category | Interface & Expansion › I/O Expanders & Multiplexers |
| Pins | 16 |
| Channels | 4 |
Adafruit PCA9546 4-Channel I2C Multiplexer pinout
| Pin | Name | Type | Description |
|---|---|---|---|
| 1 | VCC | power | |
| 2 | 3SCL | bidirectional | |
| 3 | GND | ground | |
| 4 | 3SDA | bidirectional | |
| 5 | INPUTSDA | bidirectional | |
| 6 | 2SCL | bidirectional | |
| 7 | INPUTSCL | bidirectional | |
| 8 | 2SDA | bidirectional | |
| 9 | RESET | bidirectional | |
| 10 | 1SCL | bidirectional | |
| 11 | A0 | bidirectional | |
| 12 | 1SDA | bidirectional | |
| 13 | A1 | bidirectional | |
| 14 | 0SCL | bidirectional | |
| 15 | A2 | bidirectional | |
| 16 | 0SDA | bidirectional |
Schematic symbol and footprint
Footprint: Adafruit PCA9546 4-Channel I2C Multiplexer (header pads) — to scale, pad 1 in yellow (mm). Check against the datasheet before ordering PCBs.
Where to buy
Stock and prices from the suppliers, checked 2026-10-08; excluding tax and shipping.
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