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7-Segment Driver IC-74LS47

SKU: US4JC3CNNG
The 74LS47 is a BCD (Binary Coded Decimal) to 7-Segment Decoder/Driver IC designed to drive common-anode 7-segment LED displays. It converts 4-bit BCD input signals into the appropriate outputs required to display decimal digits from 0 to 9 on a 7-segment display. Built using Low-Power Schottky TTL technology, the 74LS47 provides high-speed operation and reliable performance while consuming relatively low...
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Specifications

Specifications:

IC Type: BCD to 7-Segment Decoder/Driver
Model: 74LS47
Logic Family: Low-Power Schottky TTL (LS TTL)
Package Type: DIP-16
Display Compatibility: Common Anode 7-Segment Displays
Input Type: 4-Bit BCD Input
Output Type: Active Low Open Collector Outputs
Supply Voltage (VCC): 4.75V to 5.25V DC
Typical Supply Voltage: 5V DC
Input Logic Levels: TTL Compatible
Lamp Test Input (LT): Yes
Ripple Blanking Input (RBI): Yes
Ripple Blanking Output (RBO): Yes
Power Consumption: Low
Propagation Delay: Typically 15ns to 30ns
Operating Temperature Range: 0°C to +70°C
Storage Temperature Range: -65°C to +150°C
Mounting Type: Through-Hole

Additional Resources

74LS47.PDF

FAQ

1. What is the 74LS47 IC used for?

The 74LS47 is used to convert 4-bit BCD inputs into signals required to drive a common-anode 7-segment display.

2. Which type of 7-segment display is compatible with the 74LS47?

The 74LS47 is specifically designed for common-anode 7-segment LED displays.

3. What is the purpose of the Lamp Test (LT) pin?

The Lamp Test pin allows all display segments to be turned on simultaneously for testing purposes.

4. What is ripple blanking used for in the 74LS47?

Ripple blanking is used to suppress leading zeros in multi-digit display systems, improving display readability.

5. Can the 74LS47 be used with microcontrollers?

Yes, the IC can be interfaced with Arduino, AVR, PIC, STM32, and other microcontrollers to display numerical data on common-anode 7-segment displays.

View full product details

The 74LS47 is a BCD (Binary Coded Decimal) to 7-Segment Decoder/Driver IC designed to drive common-anode 7-segment LED displays. It converts 4-bit BCD input signals into the appropriate outputs required to display decimal digits from 0 to 9 on a 7-segment display.

Built using Low-Power Schottky TTL technology, the 74LS47 provides high-speed operation and reliable performance while consuming relatively low power. The IC includes additional features such as Lamp Test (LT), Ripple Blanking Input (RBI), and Ripple Blanking Output (RBO), making it suitable for multi-digit display systems and leading-zero suppression applications.

The 74LS47 is widely used in digital clocks, counters, calculators, frequency meters, industrial displays, educational projects, and microcontroller-based systems where numeric information needs to be displayed.

Key Features

  • BCD to 7-segment decoder/driver IC
  • Designed for common-anode displays
  • Displays decimal digits 0 through 9
  • Low-Power Schottky TTL technology
  • High-speed operation
  • Lamp Test function for display testing
  • Ripple blanking for leading zero suppression
  • Open-collector outputs
  • Direct interface to 7-segment LED displays
  • TTL-compatible inputs
  • Reliable and stable operation
  • Low power consumption
  • Easy integration into digital circuits
  • Ideal for display and counting applications