The PCA9518PW is an interface Specialized made by NXP Semiconductors in a TSSOP-20 package with 20 pins. -40℃~+85℃ 3V~3.6V Enable/shutdown function I2C TSSOP-20 Signal Buffers, Repeaters, Splitters ROHS.
PCBKit's library has its KiCad symbol (tinkerforge:PCA9518PW, from Tinkerforge) and its footprint (Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm, from KiCad's library), ready for a KiCad board. 18 are in stock at JLCPCB (part C2652933). 4 open-source boards in 3 repositories on GitHub use it.
| Pin | Name | Type |
|---|---|---|
| 1 | EXPSCL1 | Passive |
| 2 | EXPSCL2 | Passive |
| 3 | SCL0 | Passive |
| 4 | SDA0 | Passive |
| 5 | SCL1 | Passive |
| 6 | SDA1 | Passive |
| 7 | EN1 | Passive |
| 8 | SCL2 | Passive |
| 9 | SDA2 | Passive |
| 10 | GND | Passive |
| 11 | EN2 | Passive |
| 12 | SCL3 | Passive |
| 13 | SDA3 | Passive |
| 14 | EN3 | Passive |
| 15 | SCL4 | Passive |
| 16 | SDA4 | Passive |
| 17 | EN4 | Passive |
| 18 | EXPSDA1 | Passive |
| 19 | EXPSDA2 | Passive |
| 20 | VCC | Passive |
adamatom/chewtoy
This is a KiCad project for a i2c and GPIO expander cape for the BeagleBone Black. It provides eight expansion ports, with each port offering access to the common i2c bus as well as two dedicated GPIO pins
sarahemm/cern-mimic-panel
LED display showing the current status of the CERN accelerator complex
<iframe src="https://pcbkit.io/embed/parts/nxp/PCA9518PW" title="PCA9518PW in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe><img src="https://pcbkit.io/embed/parts/nxp/PCA9518PW.jpg" alt="PCA9518PW" width="1200" height="900">[](https://pcbkit.io/parts/nxp/PCA9518PW)Yes. The symbol is tinkerforge:PCA9518PW and the footprint Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm, both drawn on this page. PCBKit places them on a board for you when you design with it.
TSSOP-20, with 20 pins. Its footprint is drawn on this page.
NXP Semiconductors publishes it: the Datasheet link on this page opens it.
JLCPCB lists it as part C2652933, with 18 in stock; the sellers' links on this page open their listings.
Parts like it in the library: the PCA9544APW by NXP Semiconductors, the NCA9545-DTSR by NOVOSENSE, the PCA9545APW by NXP Semiconductors and the PCA9544APW by Texas Instruments. Check their datasheets: a part that fits the footprint may still differ in its ratings.
4 boards in 3 repositories on GitHub; the most starred are listed on this page, with their KiCad files.
