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One of the main goals of the Cherenkov Telescope Array (CTA) observatory isto improve the $\gamma$-ray detection sensitivity by an order of magnitude,compared to the current ground-based observatories. Widening the energycoverage down to 20 GeV and up to 300 TeV is also an important goal. This goalwill be possible by using Large-Sized Telescopes (LSTs) for the energy range of20--200 GeV, Medium-Sized Telescopes (MSTs) for 100 GeV--10 TeV, andSmall-Sized Telescopes (SSTs) for energies above 5 TeV. The LSTs, which focuson the lowest energies, are operated in a region dominated by background eventsoriginated from the night sky background. To reduce such background events asmuch as possible, the LST cameras are only read out if at least two of themhave been triggered in a short-time coincidence window. Such trigger isimplemented for each LST camera in a dedicated module called Trigger InterfaceBoard (TIB). In addition, the TIB is also used in MSTs equipped with theNectarCAM camera system to manage the different trigger and timing signalsbetween LSTs and MSTs, as well as to monitor the different counting rates anddead-time of the cameras. It also assigns a time stamp to each event, which isrecorded along with the information provided by the CTA global timingdistribution system, based on the White Rabbit protocol. Therefore, the eventarrival time can be determined in a redundant way. In this contribution, themain features and the technical performance of the TIB are presented.

A Trigger Interface Board to manage trigger and timing signals in CTA Large-Sized Telescope and Medium-Sized Telescope cameras