74HC/LS147 2–6V Priority Encoder IC | 10-to-4 Line, High-Speed, Low Power, DIP/SOP Package | Xinbole

The 74HC/LS147 is a high-performance 10-to-4 line priority encoder IC designed for efficient data encoding and input prioritization in digital logic systems. Developed using advanced High-Speed CMOS (HC) and Low-Power Schottky TTL (LS) technologies, it delivers fast switching performance, low power consumption, and strong noise immunity, making it ideal for modern high-speed digital applications.

The LS variant incorporates Schottky transistor technology to reduce propagation delay and enhance switching speed, while the HC version ensures ultra-low quiescent current and a wide operating voltage range of 2V to 6V. This provides a clear advantage over traditional TTL-only encoder series, enabling better energy efficiency and flexible integration into mixed-voltage systems.

With its priority encoding capability, the 74HC/LS147 efficiently converts multiple input signals into a compact binary output while ensuring higher-priority inputs override lower ones. Its optimized internal design ensures stable operation, excellent thermal performance, and long-term reliability in complex logic circuits.

Available in both DIP and SOP package types, the device offers flexibility for prototyping, compact PCB layouts, and high-volume production.

Key Features & Applications (Combined)

• 10-to-4 line priority encoder with active inputs
• 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)
• High noise immunity and stable logic performance
• Available in DIP and SOP packages

Applications:

• Data encoding and priority logic systems
• Keyboard encoding circuits
• Interrupt control systems
• Microprocessor and microcontroller interfacing
• Industrial automation and control systems
• Digital logic and combinational circuit design
• Embedded systems and communication equipment