74LS147 Decimal to BCD Priority Encoder IC (74147 IC) – DIP-16 Package

The 74LS147 Decimal to BCD Priority Encoder IC (74147 IC) is a high-speed TTL logic integrated circuit designed to convert ten decimal input lines (0–9) into a 4-bit Binary Coded Decimal (BCD) output. It features built-in priority encoding, ensuring that when multiple inputs are active simultaneously, the input with the highest priority (highest-numbered input) is encoded and reflected at the output. This makes the IC ideal for applications where multiple input signals need to be processed efficiently and accurately.

The 74LS147 is housed in a standard 16-pin DIP package and belongs to the 74LS (Low-Power Schottky TTL) logic family, offering fast switching speeds, low power consumption, and reliable operation. The device uses active-LOW inputs and active-LOW outputs, making it compatible with standard TTL logic circuits and easy to integrate into digital systems.

Designed for digital encoding applications, the 74LS147 simplifies circuit design by reducing multiple input lines into a compact 4-bit BCD code. This helps minimize wiring complexity and reduces the number of required logic components. Its priority encoding capability ensures reliable operation even when more than one input is active at the same time.

The 74LS147 Decimal to BCD Priority Encoder IC is widely used in keyboard encoding, digital control systems, embedded systems, robotics, communication equipment, industrial automation, and educational electronics. It is also commonly employed in microprocessor interfaces, data acquisition systems, and various digital logic circuits where efficient decimal-to-binary conversion is required.

Features

• Converts 10 decimal inputs into a 4-bit BCD output

• Built-in priority encoding function

• Highest-numbered active input receives priority

• Active-LOW inputs and active-LOW outputs

• High-speed Low-Power Schottky (LS-TTL) technology

• Fast switching performance

• Low power consumption

• Standard 16-pin DIP package

• TTL-compatible logic levels

• Reliable and stable digital operation

• Easy integration into digital circuits

Applications

• Keyboard encoding systems

• Decimal-to-BCD conversion

• Digital control systems

• Embedded systems

• Industrial automation

• Robotics projects

• Microprocessor and microcontroller interfaces

• Data acquisition systems

• Educational electronics laboratories

• DIY digital electronics projects