Key Features:
- BCD Input: The SN74LS47N accepts BCD input (0 to 9), making it suitable for applications that require decimal digit representation.
- 7-Segment Output: It drives common cathode 7-segment displays, generating the appropriate output signals to illuminate the correct segments for decimal digits.
- Active-Low Outputs: The outputs are active-low, meaning that a logic low on the output pin turns on the corresponding segment of the display, which is standard for many display applications.
- Latching Capability: The device includes a latch that holds the output when the inputs change, allowing for stable display conditions and preventing flickering.
- Built-in Blanking and Ripple Blanking: The SN74LS47N features inputs for blanking the display and controlling the ripple blanking feature, providing additional flexibility in managing display outputs.
Applications:
- Digital Displays: Commonly used in electronic devices with numeric displays, such as digital clocks, counters, and scoreboards.
- Measurement Instruments: Utilized in measurement and instrumentation systems that require numerical output.
- Consumer Electronics: Found in a variety of consumer electronics for displaying numerical information.
Technical Specifications:
- Input Voltage Levels: Compatible with standard TTL logic levels.
- Output Drive Capability: Capable of driving multiple segments with sufficient current, typically around 30 mA per segment.
- Package Type: Available in a 16-pin DIP package, facilitating easy integration into circuits.
The SN74LS47N is a reliable and efficient solution for driving 7-segment displays in various digital applications. Its ability to convert BCD inputs to segment outputs simplifies design efforts in display systems, making it a popular choice among engineers and designers.
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Reprinted from: https://www.mobikechip.com/static-product-faq-detail/125.html