74HC390 Dual 4 bit Decade Ripple Counter IC (74390) DIP 16 Package

74HC390 Dual 4 bit Decade Ripple Counter IC (74390) DIP 16 Package

The 74HC390 (commonly referred to as 74390) is a high-speed CMOS dual 4-bit ripple counter, designed for binary and BCD (decade) counting applications. Each section of the IC operates as a divide-by-two and divide-by-five counter, allowing flexible configurations such as divide-by-10, divide-by-100, and other custom division ratios.

This IC includes two independent 4-bit counters, each capable of operating separately or connected in cascade for higher count ranges. The 74HC390 provides synchronous operation within each section, ensuring reliable and accurate counting with minimal propagation delay.

Operating on a wide voltage range (2V–6V) and providing high noise immunity, the 74HC390 is ideal for frequency dividers, timing circuits, event counters, and digital clock applications. Its low power CMOS design makes it suitable for both battery-powered and high-speed digital systems

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Specifications:-

• Package Type:            DIP
• Voltage Rating:           2 to 6V
• Temperature Rating:    -40 to 125 Deg C
• Number of Pins:          16
• Frequency:                 71MHz

Applications:

• Digital frequency dividers
• Frequency counters
• Timer and clock circuits
• Sequential logic and pulse counting
• Frequency scaling for oscillators
• Digital control systems
• Signal division for microprocessor systems

74hc390-ic-datasheet