Two different logic circuits have the characteristics shown in Table 8-14.

(a) Which circuit has the best LOW-state DC noise immunity? The best HIGH-state DC noise immunity?

(b) Which circuit can operate at higher frequencies?

(c) Which circuit draws the most supply current?

Table 8-14

Vsupply (V) VIH(min) (V) VIL(max) (V) VOH(min) (V) VOL(max) (V) tPLH (ns) tPHL (ns) PD (mW) Circuit A 6 1.6 0.9 2.2 0.4 10 8 16 Circuit B 5 1.8 0.7 2.5 0.3 18 14 10