I need to control a DS1809-010 digital potentiometer chip with a Nano. The chip has two control inputs. Up and down to control the swiping action of the pot in the chip. The inputs require a ground pulse to increment the swipe (either up or down). When the input is not being used it needs to be an open circuit like a switch or relay contact. It cannot be pulled up to 5 volts.
My question is what output function can I use to send a ground pulse and then return to an open circuit.
Thanks!!
Link to spec sheet for chip. https://datasheets.maximintegrated.com/en/ds/DS1809.pdf