SBAS894A April 2018 – October 2018 ADS112C04
DRDY is an open-drain output pin that indicates when a new conversion result is ready for retrieval. When DRDY falls low, new conversion data are ready. DRDY transitions back high when the conversion result is latched for output transmission. In case a conversion result in continuous conversion mode is not read, DRDY releases high for tw(DRH) before the next conversion completes. See the I2C Timing Requirements table for more details.