I'm develloping a IIOT Gateway wich is controlled by a Raspberry Pi wich has 32 24v Digital input channels and 8 0.5A outputs. The signals interfece is now made with a multiplexer and the Raspberry Pi recives through SPI. I have a functional board, but it will not be the definitive because it doesnt has any type of protection and isolation. I am now working on the definitive design and the TI material has been very helpful.
I have studied a lot and selected 3 references for my new design:
Sub 1-W, 16-Channel, Isolated Digital Input Module Reference Design
www.ti.com/.../TIDA-01508
Input Protection and Backup Supply Reference Design for 25-W PLC Controller Unit
www.ti.com/.../TIDA-03031
Low Side 0.5A 8ch Digital Output Module for PLC
www.ti.com/.../TIDA-00236
Now i'ld like to know if those are the best references for my design, or there are newer technologies that may be better to use
Thanks