HI-8684

The HI-8683 and HI-8684 are system components for interfacing incoming ARINC 429 signals to 8-bit parallel data using proven +5V analog/digital CMOS technology.

The HI-8683 and HI-8684  are a digital device that requires an external analog line receiver such as the HI-8482 or HI-8588 betweenthe ARINCbus andthedevice inputs. The HI-8684 incorporates the digital logic and analog line receiver circuitryinasingledevice. The HI-8683 and HI-8684  are also available as a second source to the DLS-112 18 pin DIP and 28 pin PLCC packagepinouts.

The receivers on the HI-8684 connect directly to the ARINC 429 Bus and translate the incoming signals to normalCMOS levels. Internal comparator levels are set just below the standard 6.5 volt minimumdata threshold andjust above the standard 2.5 volt maximumnull threshold. The -10 version of the HI-8684 allows the incorporation of an external 10K resistance in series with each ARINC input for lightning protectionwithout affectingARINClevel detection. Both HI-8683 and HI-8684  products offer high speed 8-bit parallel bus interface, a 32-bit buffer, and error detection for word length and parity. Areset pinis alsoprovidedfor power-oninitialization.