74HC/LS190 2–6V Up/Down Decade Counter IC | Synchronous BCD Counter, High-Speed, DIP/SOP Package | Xinbole

The 74HC/LS190 is a high-performance synchronous up/down decade (BCD) counter IC designed for precise counting and control in digital systems. Built using advanced High-Speed CMOS (HC) and Low-Power Schottky TTL (LS) technologies, it delivers fast switching speeds, low power consumption, and high noise immunity, ensuring reliable performance in modern electronic applications.

The LS variant incorporates Schottky transistor technology to minimize propagation delay and enhance switching efficiency, while the HC version provides ultra-low quiescent current and a wide operating voltage range from 2V to 6V. This offers a clear advantage over traditional TTL-only counters, enabling improved power efficiency and compatibility with mixed-voltage logic environments.

With synchronous counting capability, the 74HC/LS190 ensures accurate and glitch-free operation during both up and down counting modes. Its integrated parallel load and reset functions provide flexible control for complex counting sequences. The optimized internal design enhances thermal performance and long-term reliability, making it suitable for continuous operation in industrial systems.

Available in both DIP and SOP package types, the device supports easy prototyping as well as compact PCB layouts for production designs.

Key Features & Applications (Combined)

• Synchronous up/down decade (BCD) counter
• Operating voltage range: 2V to 6V (HC), 5V TTL compatible (LS)
• High-speed switching with low propagation delay
• Schottky TTL technology for faster response (LS version)
• Low power CMOS operation (HC version)
• Parallel load and reset control functions
• High noise immunity and stable counting performance
• Available in DIP and SOP packages

Applications:

• Digital counters and timing circuits
• Frequency division and event counting
• Industrial automation and control systems
• Clock and timing generation circuits
• Embedded systems and microcontroller interfacing
• Display counting and BCD-based systems
• General-purpose digital logic applications