US Patent 7999567 SEU tolerant arbiter

Single Event Upset (SEU, also referred to as soft error) tolerant arbiters, bare arbiters, and filters are disclosed. An arbiter provides a filter section, and a bare arbiter, coupled to the filter section. The bare arbiter includes a redundant first input and a redundant second input, and a redundant first output and a redundant second output. A pull-down transistor in the bare arbiter conditionally overpowers a corresponding pull-up transistor in the bare arbiter when a contention condition is present in the bare arbiter.