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Shown in Fig. P2.39 is a BJT realization of the logic function known as NOR. (a) Assuming L = 0 V and H = 5 V, prepare the truth table, showing the state of each BJT (CO or Sat) as well as the logic level (H or L) of Y for each of the four possible input combi- nations: (A, B) = (L, L), (L, H), (H, L), (H, H). (b) If VREsaD = 0.8 V and VeEIsao = 0.1 V, what is the minimum B, required of each BJT for proper operation?

Shown in Fig. P2.39 is a BJT realization of the logic function known as NOR. (a) Assuming L = 0 V and H = 5 V, prepare the truth table, showing the state of each BJT (CO or Sat) as well as the logic level (H or L) of Y for each of the four possible input combi- nations: (A, B) = (L, L), (L, H), (H, L), (H, H). (b) If VREsaD = 0.8 V and VeEIsao = 0.1 V, what is the minimum B, required of each BJT for proper operation?

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
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2.39
2.39 Shown in Fig. P2.39 is a BJT realization of the logic function known as NOR. (a) Assuming L = 0 V and H = 5 V, prepare the truth table, showing the state of each BJT (CO or Sat) as well as the logic level (H or L) of Y for each of the four possible input combi- nations: (A, B) = (L, L), (L, H), (H, L), (H, H). (b) If VBEsa) = 0.8 V and VCEea) = 0.1 V, what is the minimum B, required of each BJT for proper operation? 5 V 31 kN O Y 10 kN 10 kN AO QA BO QB FIGURE P2.39
Transcribed Image Text:2.39 Shown in Fig. P2.39 is a BJT realization of the logic function known as NOR. (a) Assuming L = 0 V and H = 5 V, prepare the truth table, showing the state of each BJT (CO or Sat) as well as the logic level (H or L) of Y for each of the four possible input combi- nations: (A, B) = (L, L), (L, H), (H, L), (H, H). (b) If VBEsa) = 0.8 V and VCEea) = 0.1 V, what is the minimum B, required of each BJT for proper operation? 5 V 31 kN O Y 10 kN 10 kN AO QA BO QB FIGURE P2.39
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