MA28139 terminal equivalent, obdh bus terminal.
s Radiation Hard s Low Power Consumption s Single CMOS-SOS ASIC Implementation s Latch-up Free s High SEU Immunity s Fully Compliant with ESA OBDH, IUB, DBI and RBI Speci.
In RT mode, power up resets the OBT and causes it to deselect both busses. Two watchdog counters monitor the Nominal l-bus and the Redundant l-bus. If either bus becomes active, that bus will be selected. If the selected bus stops, the OBT watchdog t.
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