A high-speed dynamic reference single-ended ECL input-interface circuit has been fabricated for advanced ATM switching MCMs. To improve I/O pin number limits, the single-ended ECL circuit operates with a reference signal directly generated from the input signal itself. The reference level can change dynamically to achieve a larger noise margin for the input signal. Experimental results show that operation up to 3.4Gbit/s with a large level margin can be attained.
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