STMicroelectronics HCF4017 Decade Counter/Divider

The HCF4017 from STMicroelectronics is a high-performance integrated circuit that functions as a decade counter/divider with ten decoded outputs. This versatile component is part of the CMOS family and is designed to operate with a power supply voltage ranging from 3V to 15V, making it suitable for a wide array of applications across different voltage requirements.

At the heart of the HCF4017 lies its ability to count pulses. It features a 5-stage divide-by-10 Johnson counter with ten decoded outputs and a carry out bit. These outputs can be used to drive external components directly, thanks to their high current sourcing capabilities. Each decoded output can drive up to 10 LSTTL loads, which is beneficial for interfacing with other logic families.

The device is triggered by a positive-going signal at the clock input while the reset input has an overriding function. This means that no matter what stage the counter is at, it can be immediately reset to zero by a high level on the reset line. The counter advances on the rising edge of the clock signal, ensuring precise timing and control over the counting sequence.

One of the key features of the HCF4017 is its versatility. It is widely used in a variety of applications including counters, dividers, LED displays, and sequencers. Its ability to interface with other digital ICs makes it a staple in digital projects and educational kits. The decoded outputs also eliminate the need for additional decoding or driver circuits, simplifying the design and reducing component count.

The HCF4017 is packaged in a 16-pin dual-in-line package, ensuring compatibility with standard breadboards and sockets. Its robust design ensures that it can operate over a wide temperature range, making it suitable for industrial applications. Furthermore, the HCF4017 is designed with noise immunity and low power consumption in mind, ensuring reliable operation even in challenging environments.

For designers and hobbyists looking for a reliable and flexible decade counter/divider, the STMicroelectronics HCF4017 is an excellent choice, providing a combination of performance, durability, and ease of use.