(a) Use Table 8-11 to determine how many 74AS inputs can typically be driven by a 4000B output.

(b) Repeat part (a) for a 74HC output.

Table 8-11

Parameter 4000B 1 A 1 A 0.4 mA 0.4 mA TIH(max) IL (max) JOH(max) TOL(max) CMOS 74HC/HCT 1 A 1 A 4 mA 4 mA 74AC/ACT 1 A 1 A 24 mA 24 mA 74AHC/AHCT 1 A 1 A 8 mA 8 mA 74 40 A 1.6 mA 0.4 mA 16 mA 74LS 20A 0.4 mA 0.4 mA 8 mA TTL 74AS 20A 0.5 mA 2 mA 20 mA 74ALS 20A 100 A 400 mA 8 mA 74F 20A 0.6 mA 1.0 mA 20 mA