I am driving a 7414 Schmitt Trigger from a PS2505 optotriac I have a 120VAC switch coming in to the PS2505, the output of the PS2505 going to a 7414 Schmitt Trigger and the Schmitt output going to an Arduino input pin.
I have triple checked that I have 5V at pin 14 and GND and pin 7 of the Schmitt. I ave also swapped out the 7414 for another one with no change
I have tried all of its gates:
Pin 1 IN : Pin 2 OUT
Pin 3 IN : Pin 4 OUT
Pin 5 IN : Pin 6 OUT
and so on…
When I tie any input LOW (to GND) its corresponding output goes HIGH and vice versa.
But when I drive it from the PS2505 via a 120VAC switch it doesn’t work
I have attached the relavent datasheets and a schematic of the section
PS2505_datasheet.pdf (117 KB)