ON Semiconductor 74LS247 Product Overview
The ON Semiconductor 74LS247 is a BCD to 7-segment decoder/driver designed to drive 7-segment displays with ease and efficiency. This integrated circuit is part of the low-power Schottky (LS) family, which is renowned for its low power consumption and high-speed operation. The 74LS247 is specifically tailored to convert binary-coded decimal (BCD) input data into signals that can control LED or incandescent displays, providing a convenient way to display numerical information.
Key Features
- BCD Input: Accepts a 4-bit BCD input that allows representation of the digits 0 through 9.
- 7-Segment Decoding: Capable of driving common-anode 7-segment displays with decoded outputs for segments A through G plus a separate output for driving the decimal point.
- Open-Collector Outputs: Features open-collector outputs that can sink currents suitable for directly driving indicators in 7-segment displays.
- High-Speed Operation: As part of the LS series, it boasts high-speed operation, making it ideal for applications that require quick response times.
- Low Power Consumption: The device's low power consumption makes it an excellent choice for battery-powered or energy-efficient applications.
- Lamp Test and Blanking: Includes lamp test (LT) and blanking (BI) inputs that allow for testing the display and turning off all segments, respectively.
- Ripple Blanking: Comes with ripple blanking input (RBI) and output (RBO) features to facilitate the suppression of leading/trailing zeroes in multi-digit displays.
Applications
The 74LS247 from ON Semiconductor is a versatile component that finds its use in a variety of applications where numerical displays are required. Common applications include:
- Digital clocks and timers
- Calculators
- Electronic meters
- Scoreboards
- Point of sale terminals
With its combination of features, the 74LS247 is a reliable and effective solution for driving 7-segment displays in a wide range of electronic devices. Its ease of use and low power requirements make it an excellent choice for designers looking to create clear and efficient numerical displays.
