The EL1056 is designed to drive highqualitytest signals into close orterminated loads. It has a dispersion of250ps or less — whether due to signal size or direction ofedge. It can output a very wide 24V output span,encompassing all logic families as well as analog levels. TheEL1056 is fabricated in Elantec's oxide isolated process,which eliminates the possibility of latch-up and provides avery durable circuit.The output can be turned off in two ways; the OE pins allowthe output to be put in a high-impedance state which makesthe output look like a large resistance in parallel with 3pF,even for back-driven signals with as much as 2.5V/μs slewrate. The E pins put the output in an even higher impedancestate, guaranteed to 150nA leakage in the EL1056A. Thisallows accurate measurements on the bus withoutdisconnecting the EL1056 with a relay.The EL1056 incorporates an output current sense which canwarn the system controller that excessive output current isflowing. The trip point is set by two external resistors.
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