For vi 25 v determine the current in each transistor - if

Question

Repeat Problem for the BiCMOS inverter shown in Figure(b)

Problem

Consider the basic BiCMOS inverter in Figure 17.36(a) in the text. Assume circuit and transistor parameters of V_DD = 5 V, K_n = K_p = 0.1 mA/V², V_TN = +0.8 V, V_TP = -0.8 V, and β = 50.

(a) For v_I = 2.5 V, determine the current in each transistor.

(b) If the current calculated for Q₁ were charging a 15 pF load capacitance, how long would it take to charge the capacitance from 0 to 5 V?

(c) Repeat part (b) for the current in the transistor M_P.