74HC90

The 74HC90 is a high-speed CMOS decade counter IC engineered for reliable digital counting and division tasks. Built with four flip-flop stages, it provides stable binary counting and flexible division ratios while maintaining low power consumption and fast switching for modern digital systems. Operating voltage: 2 V to 6 V for broad compatibility with common logic supplies. Maximum clock frequency: Up to 25 MHz to support high-speed counting applications. Low power consumption: Typical supply current of 20 µA for energy-conscious designs. Four binary ripple counter stages: Enable division by 2, 5, or 10 to accommodate diverse timing and sequencing needs. Package: Standard 14-pin dual in-line package for straightforward PCB integration. Designed using advanced CMOS technology, the 74HC90 delivers improved switching performance and noise immunity relative to legacy TTL counters while keeping quiescent current to a minimum. Its combination of speed and efficiency makes it suitable for frequency division, timing, event counting, and other sequencing roles in embedded and discrete digital circuits. The IC’s predictable ripple-count behavior and multiple division options give designers flexibility when implementing counters, dividers, or simple state machines. With its standard pinout and wide supply range, the 74HC90 is easy to incorporate into existing layouts and is a practical choice when a compact, low-power decade counter is required.