I've been trying to use a 4bit adder IC, but there are 2 main problems I've found which prevent me from using it:
- If power is connected to the VCC pin of the IC, and GND is not connected, then every single output pin gives an output, without any connected inputs
- Also, no outputs work when I plug GND into GND and so on, even when I connect inputs in with pull-down resistors.
This schematic is only using the first bit of the adder as a test, yet literally nothing turns on.
I know that 10k resistors may be too much, however, they have worked perfectly with other ICs i've used
Heres the datasheet:
Thanks for the help guys
I'm not good at creating circuit diagrams so try to forgive anything that doesn't make sense