We present here the design and performance of the On-Board electronics for Drift Tubes board (OBDT), which is the new prototype built to substitute the Drift Tubes (DT) muon on-detector electronics at Compact Muon Solenoid experiment (CMS). The OBDT is responsible of the time digitization of the DT signals, allowing further tracking and triggering of the barrel muons. It is also in charge of the slow control tasks of the DT chamber systems. A prototype of this board has been produced and is being tested both in the laboratory and also in test stands with real DT chambers. The full functionality in real conditions is being evaluated, showing very satisfactory results.