CD4543 BCD to 7 Segment Decoder IC (DIP-16 Package)

CD4543 BCD to 7 Segment Decoder IC is a highly reliable CMOS-based integrated circuit designed to convert Binary Coded Decimal (BCD) inputs into 7-segment display outputs. It is widely used in digital display systems such as clocks, counters, meters, and industrial control panels. Known for its low power consumption, high noise immunity, and wide operating voltage range, the CD4543 is an excellent choice for both educational and commercial electronic applications.

This IC is specifically designed to drive common cathode 7-segment displays, providing clear numeric visualization from BCD inputs. With built-in latch control, blanking, and lamp test features, the CD4543 offers enhanced flexibility in display control, making it suitable for embedded systems, microcontroller-based projects, and digital instrumentation.

Key Features of CD4543 BCD to 7 Segment Decoder IC

• BCD to 7-Segment Conversion
  Converts 4-bit BCD input into corresponding 7-segment display signals.

• Common Cathode Display Support
  Optimized for driving common cathode 7-segment LED displays.

• Latch Enable (LE) Function
  Allows data to be latched, ensuring stable display output even when inputs change.

• Blanking Input (BI)
  Enables blanking of the display for power saving or display control applications.

• Lamp Test (LT) Function
  Allows testing of all segments simultaneously for diagnostics and quality checks.

• CMOS Technology
  Ensures low power consumption and high noise immunity.

• Wide Operating Voltage Range
  Operates typically from 3V to 15V, suitable for various logic systems.

• High Output Drive Capability
  Can directly drive LED segments without additional buffering in most applications.

• DIP Package Availability
  Easy to use, breadboard-friendly, and suitable for prototyping and PCB designs.

Technical Specifications

• IC Type: BCD to 7 Segment Decoder / Driver

• Model Number: CD4543

• Logic Family: CMOS

• Display Type: Common Cathode

• Input Type: 4-bit BCD (A, B, C, D)

• Output: 7-Segment (a to g)

• Operating Voltage (VDD): 3V to 15V

• Operating Temperature: –40°C to +85°C

• Package Type: DIP-16 / SOIC (varies by manufacturer)

• Power Consumption: Very low (CMOS based)

• Propagation Delay: Low, suitable for real-time display updates

• Noise Immunity: High

Applications of CD4543 BCD to 7 Segment Decoder IC

The CD4543 IC is widely used in systems that require numeric data display, especially where power efficiency and reliability are important. Common applications include:

• Digital Clocks and Timers
  Converts BCD outputs from counters or microcontrollers into readable numeric displays.

• Digital Counters and Frequency Meters
  Used in event counters, pulse counters, and test instruments.

• Measurement Instruments
  Suitable for voltmeters, ammeters, thermometers, and weighing scales.

• Embedded Systems and Microcontroller Projects
  Interfaces easily with microcontrollers that output BCD data.

• Educational and Training Kits
  Ideal for learning digital electronics and display interfacing.

• Industrial Control Panels
  Used for displaying process values, machine status, and diagnostics.

• Consumer Electronics
  Applied in calculators, home appliances, and basic display modules.

• Automotive and Instrumentation Displays
  Reliable performance under varying voltage and temperature conditions.

Why Choose CD4543 BCD to 7 Segment Decoder IC?

The CD4543 BCD to 7 Segment Decoder IC stands out due to its simplicity, flexibility, and efficiency. With integrated latch and blanking controls, it reduces external component requirements and simplifies circuit design. Its CMOS construction ensures long operational life and minimal power draw, making it ideal for battery-powered devices.

Whether you are a student, hobbyist, or professional electronics designer, the CD4543 offers a dependable solution for numeric display applications. It is easy to interface, widely available, and compatible with standard digital logic levels—making it a preferred choice for modern and legacy electronic designs alike.

Package Includes:

1 x CD4543 BCD to 7 Segment Decoder IC (DIP-16 Package)

FAQ

1. Where can we buy this CD4543 BCD to 7 Segment Decoder IC?

This product is available online https://aiiottech.in/product/cd4518-dual-bcd-up-counter-ic/ and also available at our store in Pudupakkam/Kelambakkam, Chennai-603103

2. When can I get this CD4543 BCD to 7 Segment Decoder IC after placing the order?

RGRJ AIIoT TECHNOLOGIES will immediately ship and deliver the product within 1-3 working days.

Video Link: CD4543 7-Segment Latch/Decoder/Driver IC