Development of the hitbus chip platform for the ATLAS DBM detector at CERN

The Large Hadron Collider at CERN is presently in a two year shutdown for upgrades. Among the upgrades include insertion of a new detector in the ATLAS experiment called the Diamond Beam Monitor. Included in the DBM is a radiation hard application specific integrated circuit, the Hitbus chip platform, to allow the DBM to trigger its own readout. Intellectual property (IP) from several collaborating institutes were gathered and combined with new custom blocks to create the platform. We present the design, verification, performance, experiences from the collaborative process, and results from an irradiation with 24 GeV protons to 115 Mrad.