Hey Brian,
TI typically does not provide drivers (code) for our devices, we do provide support from an analog perspective and can help in terms of how to set up our device from a register stand point.
For drivers, I found on google two 'github' sources…
Hi jars121,
I don't think the vias will be an issue with your analog signals.
Regarding the I/O expander, take a look at this list: http://www.ti.com/interface/i2c/general-purpose-io-gpio/products.html#p1752=8;24&p106max=5;6&p886=VCC&p2192=Configuration…
Other Parts Discussed in Thread: PCA9554A , PCA9557 , PCA9534 , TCA6408A Dear support team, which of the following 8-bit I2C IO expanders would you recommend for a new design:
PCA9554A PCA9557 PCA9534 TCA6408A TCA7408
Regards Reto