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PCA9544AD
4-channel I2C-bus multiplexer with interrupt logic, SOIC-20
Schematic Symbol
Pin Configuration (20 pins)
| Pin | Name | Type |
|---|---|---|
| 1 | A0 | input |
| 2 | A1 | input |
| 3 | A2 | input |
| 4 | ~{INT0} | input |
| 5 | SD0 | bidirectional |
| 6 | SC0 | output |
| 7 | ~{INT1} | input |
| 8 | SD1 | bidirectional |
| 9 | SC1 | output |
| 10 | VSS | power_in |
| 11 | ~{INT2} | input |
| 12 | SD2 | bidirectional |
| 13 | SC2 | output |
| 14 | ~{INT3} | input |
| 15 | SD3 | bidirectional |
| 16 | SC3 | output |
| 17 | ~{INT} | open_collector |
| 18 | SCL | input |
| 19 | SDA | bidirectional |
| 20 | VDD | power_in |
Footprint
ConfirmedPackage_SO/SOIC-20W_7.5x12.8mm_P1.27mm
Pad Layout
Pads (20)
| Number | Type |
|---|---|
| 1 | smd |
| 2 | smd |
| 3 | smd |
| 4 | smd |
| 5 | smd |
| 6 | smd |
| 7 | smd |
| 8 | smd |
| 9 | smd |
| 10 | smd |
| 11 | smd |
| 12 | smd |
| 13 | smd |
| 14 | smd |
| 15 | smd |
| 16 | smd |
| 17 | smd |
| 18 | smd |
| 19 | smd |
| 20 | smd |