STMicroelectronics HCF4518BF Dual BCD Up Counter

The HCF4518BF from STMicroelectronics is a robust, high-performance CMOS Dual BCD Up Counter integrated circuit designed for use in a wide range of electronic applications requiring reliable and accurate counting functionality. This IC is part of the HCF family, known for its compatibility with all standard logic families thanks to its versatile power supply specifications and input/output characteristics.

Constructed with silicon gate CMOS technology, the HCF4518BF offers the dual benefit of low power consumption alongside high noise immunity, making it suitable for operation in electrically noisy environments. The device features two independent BCD counters, each capable of counting from 0 to 9 cyclically. This makes it an ideal choice for applications such as digital clocks, frequency dividers, calculators, and other electronic devices that require precise counting and timing solutions.

Each counter is composed of a 4-stage ripple-carry binary counter/divider with outputs that provide the BCD (binary-coded decimal) counting sequence. The counters advance on the positive-going transition of the clock signal, which can be fed into each counter independently, offering flexibility in control and synchronization. Additionally, the HCF4518BF includes reset functions that can be used to reset the count to zero at any time.

The HCF4518BF operates over a wide voltage range from 3V to 18V and is housed in a 16-pin dual in-line package (DIP), making it easy to integrate into both prototyping environments and final product designs. The input and output configurations are designed to interface with a wide range of other digital ICs, including microprocessors and other logic families, without the need for additional components.

STMicroelectronics has ensured that the HCF4518BF meets stringent quality and reliability standards, providing designers with confidence when incorporating this counter IC into their systems. With its combination of features, the HCF4518BF is an excellent choice for designers looking for a dependable and flexible counting solution.