[A] Find Va, Ia, Vb, and Ib in the circuit below using the following specifications: = -1.6 MA IIH = 40 mA V. = 2.0 V min IH IOH = -400 mA VOH = 3.4 V typ. IIL VIL = 0.8 V max IOL = 16 mA VOL = 0.2 V typ. SV ov R = 4 +5V Va Vin Ow R Ia Vb R R Ib [B] We should deal with CMOS devices carefully? Briefly explain this fact. [C] In the 74TTL two-input NAND gate, explain the rule of the diode in the totem-pole output stage? [D] Briefly explain the effect of frequency on the fan-out of CMOS gates?