HD74HC4022 Datasheet | Hitachi Semiconductor

Description The HD74HC4022 is a four-stage Johson octal counter with built-in code converter. High speed operation and spike-free outputs are obtained by use of a Johson octal counter design. The eight decoded outputs are normally low, and go high only at their appropriate octal time period. The output changes occur on the positive-going edge of the clock pulse. This part can be used in frequency division application as well as octal counter or octal decode display applications. Features - - - - - High Speed Operation High Output Current: Fanout of 10 LSTTL Loads Wide Operating Voltage: VCC = 2 to 6 V Low Input Current: 1 µA max Low Quiescent Supply Current: ICC (static) = 4 µA max (Ta = 25°C) Function Table Clock L X Clock Enable X H L X H X X X: Irrelevant n < 4 - - - Carry = H n ≥ 4 - - - Carry = L X Reset L L L L L L H Output n n n n+1 n n+1 n Q0 Pin Arrangement Q1 Q0 Q2 Q5 Q6 NC Q3 GND 1 2 3 4 5 6 7 8 (Top view) Q3 Q0 Q2 Q5 Q6 Q1 R C CE Cout Q4 Q7 16 VCC 15 Reset 14 Clock 13 Clock enable 12 Cout 11 Q4 10 Q7 9 NC Logic Diagram D CK R Q0 Q1 Q2 D CK R Q3 Q4 D CK R Q Q Q5 Q6 Q7 Clock enable Clock D CK R Cout Reset DC Characteristics Ta = 25°C Item Input voltage Symbol VIH Ta = - 40 to +85°C Max - - - 0.5 1.35 1.8 - - - -...