MC14017BCPG ON Semiconductor

MC14017B Decade Counter The MC14017B is a fivestage Johnson decade counter with builtin code converter. High speed operation and spikefree outputs are obtained by use of a Johnson decade counter design. The ten decoded outputs are normally low, and go high only at their appropriate decimal time period. The output changes occur on the MC14017B PIN ASSIGNMENT Q5 1 16 V DD Q1 2 15 RESET Q0 3 14 CLOCK Q2 4 13 CE Q6 5 12 C out Q7 6 11 Q9 Q3 7 10 Q4 V 8 9 Q8 SS FUNCTIONAL TRUTH TABLE BLOCK DIAGRAM (Positive Logic) CLOCK 14 Q0 3 Clock Decode Q1 2 Clock Enable Reset Output=n Q2 4 0X 0 n Q3 7 X1 0 n Q4 10 CLOCK XX 1 Q0 13 Q5 1 ENABLE 0 0 n+1 Q6 5 X0 n Q7 6 X0 n Q8 9 1 0 n+1 Q9 11 RESET 15 C 12 X = Dont Care. If n < 5 Carry = 1, out Otherwise = 0. V = PIN 16 DD V = PIN 8 SS LOGIC DIAGRAM Q5 Q1 Q7 Q3 Q9 1 2 6 7 11 14 CLOCK CLOCK 12 C Q C Q C Q C Q C Q ENABLE CARRY 13 C C C C C D Q D Q D Q D Q D Q RR RR RR RR RR 15 RESET 35 49 10 Q0 Q6 Q2 Q3 Q4