Disclosed is a Boundary-Scan test receiver for capturing signals during
board interconnect testing. The test receiver has a comparator with a
first input to receive signals during board interconnect testing, and a
second input to receive a reference voltage. A programmable hysteresis
circuit is coupled to at least one of the comparator's inputs. The
programmable hysteresis circuit may be configured to program a hysteresis
voltage and/or a hysteresis delay, both of which help prevent the
comparator from integrating signal noise.