The full switching-speed potential of high performance transistors is difficult to realize in a current switch configuration because of the instability which exists when many circuits are interconnected in a system. With a phase compensating network in the emitter current source, however, it has been possible to design a stable circuit using 1 Gc/sec transistors. Design techniques and engineering aspects of the circuit which result in a 5-nsec in-the-environment propagation delay are described. Particular attention is given to the dc design, stability analysis, switching performance, evaluation and specification of the circuit.
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