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SN74LS47N
IC DRVR 7 SEGMENT 16DIP
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規格
| Package | Bulk,Tube |
| ProductStatus | Active |
| DisplayType | LED |
| Configuration | 7 Segment |
| Interface | BCD |
| Current-Supply | 7 mA |
| Voltage-Supply | 4.75V ~ 5.25V |
| OperatingTemperature | 0°C ~ 70°C |
| MountingType | Through Hole |
| Package/Case | 16-DIP (0.300, 7.62mm) |
概述
Description
The SN74LS47N is a BCD (Binary-Coded Decimal) to 7-segment display decoder/driver, which is part of Texas Instruments' TTL (Transistor-Transistor Logic) family. It is designed to drive common-anode LED displays by converting a 4-bit binary input into the corresponding decimal output. Each input combination from 0000 to 1001 (representing decimal numbers 0 through 9) results in the activation of the appropriate segments to display that numeral on a 7-segment display.
Key features of the SN74LS47N include its capability to directly drive LED displays with a current-sinking design, support for lamp test, ripple blanking, and automatic leading/trailing zero blanking functions. The device operates with a 5V power supply and is known for its low power consumption, typical of LS (Low-power Schottky) series devices.
This IC is widely used in digital clocks, calculators, and other devices requiring numeric display due to its reliability, straightforward integration, and TTL compatibility, ensuring easy interfacing with other digital circuits.
Key features of the SN74LS47N include its capability to directly drive LED displays with a current-sinking design, support for lamp test, ripple blanking, and automatic leading/trailing zero blanking functions. The device operates with a 5V power supply and is known for its low power consumption, typical of LS (Low-power Schottky) series devices.
This IC is widely used in digital clocks, calculators, and other devices requiring numeric display due to its reliability, straightforward integration, and TTL compatibility, ensuring easy interfacing with other digital circuits.
Features
The SN74LS47N is a BCD to 7-segment decoder/driver with the following features:
1. BCD to 7-Segment Decoding: Translates binary-coded decimal inputs into outputs that drive seven-segment displays.
2. Open-Collector Outputs: Allows for wired-AND connections and interfacing with various types of displays.
3. Lamp Test (LT): Provides a test feature that lights up all the segments, verifying the operation of the display.
4. Blanking Input (BI): Can be used to turn off all segments regardless of the input data, useful for power saving or dimming.
5. Ripple Blanking Input/Output (RBI/RBO): Facilitates cascading of multiple SN74LS47N devices for applications requiring more digits.
6. Active Low Outputs: Suitable for driving common-anode displays as the outputs sink current.
7. TTL Compatibility: Compatible with TTL logic levels, making it suitable for use in digital systems.
8. Compact DIP Package: Available in a 16-pin DIP package, making it easy to handle and integrate into circuits.
These features make the SN74LS47N a versatile choice for applications requiring numerical display interfacing.
1. BCD to 7-Segment Decoding: Translates binary-coded decimal inputs into outputs that drive seven-segment displays.
2. Open-Collector Outputs: Allows for wired-AND connections and interfacing with various types of displays.
3. Lamp Test (LT): Provides a test feature that lights up all the segments, verifying the operation of the display.
4. Blanking Input (BI): Can be used to turn off all segments regardless of the input data, useful for power saving or dimming.
5. Ripple Blanking Input/Output (RBI/RBO): Facilitates cascading of multiple SN74LS47N devices for applications requiring more digits.
6. Active Low Outputs: Suitable for driving common-anode displays as the outputs sink current.
7. TTL Compatibility: Compatible with TTL logic levels, making it suitable for use in digital systems.
8. Compact DIP Package: Available in a 16-pin DIP package, making it easy to handle and integrate into circuits.
These features make the SN74LS47N a versatile choice for applications requiring numerical display interfacing.
Package
The SN74LS47N is a BCD to 7-segment decoder/driver IC and is typically packaged in a 16-pin Dual In-line Package (DIP).
Pinout
The SN74LS47N is a BCD to 7-segment decoder/driver IC with 16 pins. It is designed to drive common-anode displays and is used to convert binary coded decimal (BCD) inputs into 7-segment display outputs.
Here is a concise description of its pin functionality:
1. Pins 1-4 (A, B, C, D): BCD input pins.
2. Pin 5 (RBI): Ripple Blanking Input; used to blank leading zeros.
3. Pin 6 (RBO): Ripple Blanking Output; connects to the RBI of the next IC in cascading applications.
4. Pin 7 (LT): Lamp Test; when low, it turns on all segments for testing purposes.
5. Pin 8 (GND): Ground.
6. Pins 9-15 (a-g): Segment outputs; connect to the corresponding segments of a 7-segment display.
7. Pin 16 (Vcc): Supply voltage.
The SN74LS47N provides active low outputs for segment driving, meaning it is designed to work with common-anode LED displays.
Here is a concise description of its pin functionality:
1. Pins 1-4 (A, B, C, D): BCD input pins.
2. Pin 5 (RBI): Ripple Blanking Input; used to blank leading zeros.
3. Pin 6 (RBO): Ripple Blanking Output; connects to the RBI of the next IC in cascading applications.
4. Pin 7 (LT): Lamp Test; when low, it turns on all segments for testing purposes.
5. Pin 8 (GND): Ground.
6. Pins 9-15 (a-g): Segment outputs; connect to the corresponding segments of a 7-segment display.
7. Pin 16 (Vcc): Supply voltage.
The SN74LS47N provides active low outputs for segment driving, meaning it is designed to work with common-anode LED displays.
Manufacturer
The SN74LS47N is manufactured by Texas Instruments (TI). Texas Instruments is a global semiconductor company that designs and manufactures a wide array of analog and embedded processing chips. They focus on developing innovative semiconductor solutions that help in creating electronics that make the world smarter, safer, greener, healthier, and more fun. TI is known for its significant contributions to the semiconductor industry, including innovations in analog chips and digital signal processors.
Application
The SN74LS47N is a BCD to 7-segment decoder/driver, primarily used in applications involving digital displays. Its main application areas include driving seven-segment displays for digital clocks, counters, voltmeters, and other digital readout devices. It is commonly used in consumer electronics, instrumentation panels, and any systems requiring numerical display output. The SN74LS47N decodes binary-coded decimal input into signals necessary to drive a seven-segment display, making it ideal for interfacing digital systems with human-readable outputs.
Equivalent
The SN74LS47N is a BCD to 7-segment decoder/driver. Equivalent products include:
1. SN74LS47 (from the same series but without the 'N' indicating through-hole package)
2. SN74LS48 (similar function, different logic family)
3. CD4511 (CMOS BCD to 7-segment latch/decoder/driver)
4. 74HC47 (High-speed CMOS equivalent)
5. DM74LS47N (National Semiconductor equivalent)
Make sure to verify pin compatibility and electrical characteristics when selecting an equivalent.
1. SN74LS47 (from the same series but without the 'N' indicating through-hole package)
2. SN74LS48 (similar function, different logic family)
3. CD4511 (CMOS BCD to 7-segment latch/decoder/driver)
4. 74HC47 (High-speed CMOS equivalent)
5. DM74LS47N (National Semiconductor equivalent)
Make sure to verify pin compatibility and electrical characteristics when selecting an equivalent.
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