IC 74147 10 To 4 Line Priority Encoder

The 74LS147 is a priority encoder IC that converts 10 lines of binary input into a 4-line binary output. It is designed to encode the highest-priority active input line into a binary code.

Priority Encoding:
Highest Priority:The encoder identifies the highest-priority active input and provides a binary output corresponding to that input.

Input Lines:
10 Binary Inputs:Accepts 10 lines of binary input (A0 to A9) representing the priority levels.

Binary Output:
4-Line Output:Generates a 4-line binary output (Y0 to Y3) based on the highest-priority active input.

Active-Low Outputs:
Active-Low:The outputs are active-low, meaning they are inverted.

Cascade Capability:
Cascade Connection:Multiple 74LS147s can be cascaded to encode more than 10 inputs.

Parallel Data Inputs:
Parallel Inputs:Allows parallel data input for efficient encoding.

Applications:

Interrupt Systems:Used to prioritize interrupt requests in microprocessor-based systems.

Data Multiplexing:Employed in applications where multiple data sources need to be prioritized and encoded.

Automated Systems:Used in control systems where priority decisions are required.

Pin Configuration (DIP-16)

• A0 to A9: Binary input lines
• GND: Ground (0V)
• Y0 to Y3: Binary output lines
• EO: Output Enable (Active low)
• LT: Lamp Test (Active low)
• BI: Blanking Input (Active low)
• VCC: Power Supply Voltage.

Technical Details

• Series: 74LS
• Circuit: 1 x 10:4
• Independent Circuits: 1
• Current Output High, Low: 5.2mA, 5.2mA
• Voltage Supply Source: Single Supply
• Voltage Supply: 2V ~ 6V
• Mounting Type: Through Hole
• Supplier Device Package: 16-PDIP
• Base Product Number: 74LS147