ON Semiconductor MC74HC390DR2 Dual Decade Ripple Counter
The ON Semiconductor MC74HC390DR2 is a high-performance, dual decade ripple counter integrated circuit that is part of the high-speed CMOS family. This versatile counter features two independent decade counters which can be configured to operate in various modes, such as divide-by-n counter, frequency divider, or as a digital timer.
Built using silicon gate technology, the MC74HC390DR2 offers the robustness and reliability expected from ON Semiconductor products. It has the advantage of high noise immunity and low power consumption, typical of CMOS integrated circuits, making it suitable for battery-powered devices and other power-sensitive applications.
The device is capable of operating within a wide voltage range from 2V to 6V, providing designers with flexibility in different system voltage environments. Its counter advances on the negative-going edge of the input clock signal, which contributes to its ability to handle fast signal transitions and reduces the chance of clocking errors.
Each counter has a master reset input which immediately resets the counter to its zero state when a high level is applied. This feature is crucial for ensuring the counter starts from a known state in applications that require precise timing and control.
The MC74HC390DR2 is available in an SOIC-16 package, making it compact and suitable for space-constrained applications. Its pinout is designed for optimal signal routing, which minimizes the risk of cross-talk and ensures reliable operation even in dense circuit layouts.
This dual decade ripple counter is an ideal choice for use in a wide array of applications, including timers, frequency dividers, counters, and clocks in consumer electronics, automotive, telecommunications, and instrumentation. With ON Semiconductor's reputation for quality and performance, the MC74HC390DR2 stands out as a dependable component for your digital counting needs.
Key Features:
- Dual independent decade counters
- Wide operating voltage range: 2V to 6V
- High noise immunity characteristic of CMOS technology
- Low power consumption
- Negative edge-triggered clock input
- Master reset for immediate counter zeroing
- Compact SOIC-16 package
