74LS147 Decimal to BCD Priority Encoder | TTL Logic | DIP-16

Description

The 74LS147 is a high-speed TTL 10-to-4 Line Priority Encoder. It converts ten active-LOW decimal inputs (0–9) into a 4-line BCD (Binary Coded Decimal) output. This device is a “priority” encoder, meaning that if multiple inputs are active simultaneously, the device will prioritize the input with the highest numerical value, ignoring the others.

This functionality is essential for keyboard interfaces, sensor arrays, or any system where multiple inputs compete for a single data bus, and a clear, dominant signal is required. The outputs represent the BCD equivalent of the highest active input, providing an efficient way to encode decimal data into a binary format.

Note: Product images are shown for reference only. The actual product may vary in appearance, manufacturer marking, or logo depending on stock availability.

Features

• 10-to-4 line priority encoding
• Active-LOW decimal inputs (0 through 9)
• Active-LOW BCD outputs
• High-speed TTL technology
• Priority logic handles simultaneous inputs
• DIP-16 through-hole package

Benefits

• Simplifies interface logic for multi-button/switch systems
• Encodes decimal inputs into binary data automatically
• High reliability and noise immunity characteristic of the 74LS series
• Efficiently manages data input contention via internal priority hierarchy

Applications

• Keyboard/Keypad Data Encoding
• Decimal-to-BCD Data Conversion
• Sensor Matrix Interface
• Control Panel Signal Processing
• General Purpose Digital Signal Multiplexing

Package Includes

• 1 x 74LS147 Decimal to BCD Priority Encoder IC (DIP-16 Package)

Specifications