Description
The M74HC390 is an high speed CMOS dual decade counter fabricated with silicon gate C2MOS technology.
This dual decade counter contains two independent ripple carry counters. Each counter is composed of a divide by two and divide by five counter. The divide by two and divide by five counters can be cascaded to form dual decade, dual biquinary, or various combination up to a single divide by 100 counter.

FEATUREs
■ HIgh Speed: fMAX = 79MHz (Typ.) at VCC = 6V
■ Low power dissipation: ICC = 4µA (Max.) at TA = 25°C
■ High noise immunity: VNIH = VNIL = 28 % VCC (Min.)
■ Balanced propagation delays: tPLH ≅ tPHL
■ Wide operating voltage range: VCC (Opr) = 2V to 6V
■ Pin and function compatible with 74 series 390