Part # M74HC390 datasheet

Part Manufacturer: ST Microelectronics

ST Microelectronics

Part Description: DUAL DECADE COUNTER


Part Details:

M74HC390 Dual decade 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.) DIP-16 SO-16 Balanced propagation delays: tPLH tPHL Wide operating voltage range: VCC (Opr) = 2V to 6V Pin and function compatible with 74 series 390 Description The M74HC390 is an high speed CMOS dual Each 4-bit counter is increased on the high to low decade counter fabricated with silicon gate transition (negative edge) of the clock input, and C2MOS technology. each has an independent clear input. When clear is set low all four bits of each counter are set to This dual decade counter contains two low. This enables count truncation and allows the independent ripple carry counters. Each counter implementation of divide by N counter is composed of a divide by two and divide by five configuration. counter. The divide by two and divide by five counters can be cascaded to form dual decade, All inputs are equipped with protection circuits dual biquinary, or various combination up to a against static discharge and transient excess single divide by 100 counter. voltage. Order codes Part number Package Packaging M74HC390B1R DIP-14 Tube M74HC390RM13TR SO-14 Tape and reel July 2006 Rev 2 1/17 www.st.com 17 Contents M74HC390 Contents


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M74HC390.pdf Datasheet