CD74HC390, CDx4HCT390 High-Speed CMOS Logic Dual Decade Ripple Counter

1 Features

Two BCD decade or bi-quinary counters
One package can be configured to divide-by-2, 4, 5, 10, 20, 25, 50, 100
Two controller reset inputs to clear each decade counter individually
Fanout (over temperature range)
- Standard outputs: 10 LSTTL loads
- Bus driver outputs: 15 LSTTL loads
Wide operating temperature range: -55°C to 125°C
Balanced propagation delay and transition times
Significant power reduction compared to LSTTL logic ICs
HC types
- 2V to 6V operation
- High noise immunity: N_IL = 30%, N_IH = 30% of V_CC at V_CC = 5V
HCT types
- 4.5 V to 5.5 V operation
- Direct LSTTL input logic compatibility, V_IL = 0.8 V (max), V_IH = 2 V (min)
- CMOS input compatibility, I_I ≤ 1 μA at V_OL, V_OH