I have a product that is using the LP3943 as a GPIO expander (per the app note). The LP3943 is being used to load a counter in a CPLD. On several devices we have seen shorts appear on some of the LP3943 output pins to ground. We sent the faulty components to a local lab to be decapped and inspected. The lab could not see any signs of EOS although they did conform that the shorts remained via a curve tracer.
Has this come up before concerning this part? Would a TI apps engineer be able to review the design with us to determine if we are perhaps not using the part in accordance with TI's expectations?
