ON Semiconductor MC74HC390ADR2G Dual Decade Ripple Counter

The MC74HC390ADR2G is a high-performance, dual-decade ripple counter integrated circuit from ON Semiconductor that combines two independent decade counters in a single package. This versatile component is designed for use in a wide array of counting applications within the industrial, commercial, and telecommunication sectors. Built with advanced silicon-gate CMOS technology, it offers a robust blend of speed, functionality, and low power consumption.

The MC74HC390ADR2G features two separate count chains, each with a divide-by-two section and a divide-by-five section, enabling it to perform as a divide-by-ten counter or a divide-by-two/five counter. This flexibility allows designers to employ it in various configurations to suit their specific requirements. The counters advance on the negative-going transition of the input clock signal, providing precise timing and control.

Each counter has a separate clock input (CP0 and CP1), an overriding asynchronous master reset input (MR), and multiple outputs (Q0 to Q3 for the first counter and Q4 to Q7 for the second counter), which provide a range of count states. The outputs can drive up to 10 LSTTL loads, and the high noise immunity characteristic of CMOS technology is maintained throughout the device.

The MC74HC390ADR2G operates over a broad voltage range from 2V to 6V and features a low quiescent current, making it suitable for battery-operated devices. Its standard SOIC-16 package ensures compatibility with standard surface-mount assembly processes, and its industrial-grade temperature range from -55°C to 125°C guarantees reliable operation across diverse environmental conditions.

With its combination of features, the ON Semiconductor MC74HC390ADR2G is an excellent choice for designers looking to implement efficient counting solutions in their digital systems. Whether it's used in frequency division, time-delay generation, or as part of more complex counting and timing circuits, this dual decade ripple counter is engineered to deliver performance and reliability.

For detailed specifications, datasheets, and application notes, designers and engineers are encouraged to visit ON Semiconductor's official website or contact their support team for further assistance.