IC M74HC390

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. Each 4-bit counter is increased on the high to low transition (negative edge) of the clock input, and each has an independent clear input. When clear is set low all four bits of each counter are set to low. This enables count truncation and allows the implementation of divide by N counter Configuration. All inputs are equipped with protection circuits against static discharge and transient excess voltage.

HIgh Speed:
fMAX = 79MHz (Typ.) at VCC = 6V
Low power dissipation:
ICC = 4

IC M74HC390
M74HC390B1R DIP-14
M74HC390RM13TR SOP-14
Dual decade counter