A positive-voltage-supply ECL logic gate is shown in Figure P17.12. Neglect base currents.

(a) What logic function is performed by this circuit.

(b) What are the logic 1 and logic 0 values of \(v_{2}\) at the output?

(c) When \(v_{1}=\operatorname{logic} 0\) for one of the three inputs, determine \(i_{E 1}, i_{E 2}, i_{C 3}, i_{C 2}\), and \(v_{2}\).

(d) Repeat part (c) when \(v_{1}=\operatorname{logic} 1\) for all three inputs.

Transcribed Image Text:

Figure P17.12 iEL +5 V iE2 RE2 = 1.2 k RE15 2.6 22 23 -o+1.6 V icz 1c3 ww RC= 0.8 k2 V2