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SN74LS47DR
+Lista de MateriaisIC DRVR 7 SEGMENT 16SOIC
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FabricanteTexas Instruments
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Peça do Fabricante #SN74LS47DR
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Ficha Técnica SN74LS47DR DataSheet
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Especificações
| Atributo | Valor |
| Part Status | Active |
| Display Type | LED |
| Configuration | 7 Segment |
| Interface | BCD |
| Supply Current | 7 mA |
| Voltage - Supply | 4.75V ~ 5.25V |
| Operating Temperature | 0°C ~ 70°C |
| Mounting Type | Surface Mount |
| Package / Case | 16-SOIC (0.154", 3.90mm Width) |
| Supplier Device Package | 16-SOIC |
| Base Product Number | 74LS47 |
Visão Geral
Description
Key features include:
- Outputs for segments a to g, with options for blanking and enabling the display.
- Active low outputs, meaning the segments light up when the output is low.
- Designed for operating voltages of 4.75V to 5.25V, suitable for various digital applications.
- Can be used in both common anode and common cathode configurations.
This IC is widely used in calculators, digital meters, and other devices requiring numeric displays. Its compact 16-pin package (DR) makes it suitable for space-constrained applications.
Equivalent
Features
1. BCD Input: Accepts binary-coded decimal (BCD) inputs (0-9) and translates them into the corresponding 7-segment display output.
2. Active Low Outputs: The outputs are active low, meaning they drive the display segments low to illuminate them.
3. Lamp Test: A lamp test function allows all segments to be turned on for visual testing of the display.
4. Blanking Function: The blanking input can turn off all segments regardless of the BCD input, allowing for display control.
5. Ripple Blanking Input: This feature enables the cascading of multiple decoders for displaying larger numbers.
6. Wide Supply Voltage Range: Operates at a supply voltage of 4.75V to 5.25V.
7. Fast Propagation Delay: Provides quick switching times, enhancing display responsiveness.
8. Low Power Consumption: Designed for efficiency, making it suitable for low-power applications.
These features make the SN74LS47DR ideal for various digital display applications.
Pinout
Key pin functions are as follows:
1. Inputs:
- A, B, C, D (Pins 2, 1, 3, 4): BCD input data.
- LT (Pin 5): Lamp Test input.
- BL (Pin 6): Blanking input.
- LE (Pin 7): Latch Enable input.
2. Outputs:
- a, b, c, d, e, f, g (Pins 10, 9, 8, 11, 12, 13, 14): Outputs to the 7-segment display.
3. Power & Ground:
- VCC (Pin 16): Positive supply voltage.
- GND (Pin 8): Ground.
4. Other:
- Pin 15 is not connected (N/C).
Overall, the SN74LS47DR facilitates the display of decimal digits on 7-segment displays by converting BCD inputs into the necessary output signals.
Manufacturer
Texas Instruments serves various markets, including automotive, industrial, communications, and consumer electronics, providing solutions for applications such as power management, signal processing, and data conversion. The company's commitment to innovation and quality has made it a leading player in the semiconductor sector, with products that support advancements in technology across multiple industries. The SN74LS47DR, specifically, is a BCD to 7-segment latch/decoder/driver IC used in display applications, showcasing TI's expertise in providing components for digital display systems.
Application
1. Digital Displays: Driving 7-segment displays in calculators, clocks, and electronic meters.
2. Embedded Systems: Providing a visual output for numerical data in industrial controls and instrumentation.
3. Consumer Electronics: Used in appliances for displaying settings, scores, or counts.
4. Automotive Displays: Indicating speed, fuel level, or other metrics on dashboard displays.
5. Educational Tools: In teaching electronics concepts and digital logic.
Its ability to decode binary-coded decimal input makes it versatile for numerical representation in electronic systems.