A positive-voltage-supply ECL logic gate is shown in Figure. Neglect base currents.
(a) What logic function is performed by this circuit.
(b) What are the logic 1 and logic 0 values of v2 at the output?
(c) When v1 = logic 0 for one of the three inputs, determine iE1, iE2, ic3, ic2 and v2.
(d) Repeat part (c) when v1 = logic 1 for all three inputs.