Product Overview: MC74HC390AF - ON Semiconductor

The MC74HC390AF is a high-speed, silicon-gate CMOS dual decade ripple counter designed by ON Semiconductor, a renowned leader in the semiconductor industry. This integrated circuit is a part of the HC family, which signifies the use of a high-speed CMOS technology that offers a balanced trade-off between speed and power consumption.

The device features two independent decade counters in a single package, each capable of counting from 0 to 9 cyclically. This makes it an ideal choice for applications requiring a reliable and precise counting mechanism such as digital clocks, frequency dividers, and other sequential logic operations.

Each counter is master-slave constructed, which allows for ripple-free counting that is not affected by clock transition times. The counters can be easily cascaded by feeding the carry output to the count input of the subsequent counter for applications that require extended counting ranges.

Key Features:

• High-Speed Performance: The MC74HC390AF operates at similar speeds to LSTTL (Low-Power Schottky TTL), ensuring swift response times suitable for high-speed applications.
• Low Power Consumption: Despite its high-speed capabilities, the device maintains a low power consumption, making it suitable for battery-powered and portable applications.
• Dual Counters: With two independent counters, the device offers versatility in handling multiple counting tasks simultaneously.
• Standard Pin Configuration: The MC74HC390AF comes in a standard pin configuration, which eases the design and integration process into existing and new systems.
• Wide Operating Voltage Range: The device operates over a wide voltage range from 2V to 6V, providing design flexibility across different power supply levels.

With its robust design and reliable performance, the MC74HC390AF from ON Semiconductor stands out as a top choice for designers and engineers looking for a dual decade counter that blends speed, power efficiency, and functional versatility. Whether employed in consumer electronics, automation systems, or digital instrumentation, this device delivers consistent performance that designers can trust.