7447 74hc47 74ls47 Bcd To 7 Segment Decoder Driver Dip 16

The 7447, 74HC47, and 74LS47 ICs are part of the BCD to 7-segment decoder/driver family. These ICs take a 4-bit binary-coded decimal (BCD) input and generate the correct output signals to drive a common anode 7-segment display.

They are widely used in digital counters, clocks, calculators, meters, and embedded systems. Built-in features include lamp test, ripple-blanking input (RBI), and ripple-blanking output (RBO) for display blanking and testing.

🔹 Applications

• Digital clocks and stopwatches

• Counters and digital meters

• Calculator display systems

• Microcontroller and Arduino projects

• Robotics and automation indicators

• DIY electronics and STEM learning kits

🔹 Precautions

• Works only with common anode displays

• Ensure correct Vcc (5V typical) supply

• Avoid exceeding absolute maximum ratings

• Protect from ESD and short circuits

• Keep wiring clean to prevent display errors

• Limit soldering temperature (<260°C for 10s)

🔹 Technical Specifications

• IC Type: BCD to 7-Segment Decoder/Driver

• Series: 7447 / 74HC47 / 74LS47

• Package: DIP-16

• Input: 4-bit BCD (TTL/CMOS compatible)

• Output Type: Active Low (drives common anode displays)

• Special Features: Lamp test, Ripple Blanking (RBI, RBO)

• Logic Family: 74 Series (HC, LS variants available)

• Supply Voltage (Vcc): 4.75V – 5.25V

• Fan-out: 10 LS-TTL loads

• Propagation Delay: ~20-25ns (variant-dependent)

• Output Current: Sink current suitable for LED displays

• Pin Count: 16 pins

• Operating Temperature Range: 0°C to +70°C

📹 Tutorial Video

Watch 7447 BCD to 7-Segment Decoder Tutorial

🔹 Related Categories

• IC’s

• Electronics Components

• Arduino and Accessories

• Tools and Accessories

🔹 Summary

The 7447 / 74HC47 / 74LS47 BCD to 7-Segment Decoder/Driver IC (DIP-16) is a highly reliable solution for digital display applications. With built-in lamp test and ripple blanking features, it provides accurate decoding of BCD inputs for common anode 7-segment displays. Perfect for clocks, counters, calculators, and microcontroller projects, it is a must-have in your IC’s collection.