SN74LS47N Decoder/Driver: Features, Pinout, and Datasheet [Video&FAQ]
Obsolete DUAL 5V V 5.25V V Display Drivers ICs Tube NICKEL PALLADIUM GOLD









Obsolete DUAL 5V V 5.25V V Display Drivers ICs Tube NICKEL PALLADIUM GOLD
The SN74LS47N is a Low Power Schottky BCD to 7-Segment Decoder/Drivers feature active-low outputs, designed for driving, common-anode LEDs or incandescent indicators directly. This article mainly introduces features, pinout, datasheet and other detailed information about Rochester Electronics, LLC SN74LS47N.

Tutorial | Using the 7447 74HC47 BCD to 7 Segment Display Decoder
SN74LS47N Description
The SN74LS47N is a Low Power Schottky BCD to 7-Segment Decoder/Drivers feature active-low outputs, designed for driving, common-anode LEDs or incandescent indicators directly. The IC for driving lamp buffers or common-cathode LEDs. All of the circuits except LS49 have full ripple-blanking input/output controls and a lamp test input. Display patterns for BCD input counts above 9 are unique symbols to authenticate input conditions. Its circuits incorporate automatic leading and/or trailing-edge zero-blanking control (RBI\ and RBO\). Lamp test (LT/) of these types may be performed at any time when the BI\/RBO\ node is at a high level. All types (including the '49 and 'LS49) contain an overriding blanking input (BI\), which can be used to control the lamp intensity by pulsing or to inhibit the outputs. Inputs and outputs are entirely compatible for use with TTL logic outputs.
The circuits accept 4-bit binary-coded-decimal (BCD) and, depending on the state of the auxiliary inputs, decode this data to drive a 7-segment display indicator. The relative positive-logic output levels, as well as conditions required at the auxiliary inputs, are shown in the truth tables. Output configurations of the SN74LS47N are designed to withstand the relatively high voltages required for 7-segment indicators.
These outputs will withstand 15 V with a maximum reverse current of 250μA. Indicator segments requiring up to 24 mA of current may be driven directly from the SN74LS47N high-performance output transistors. Display patterns for BCD input counts above nine are unique symbols to authenticate input conditions.
SN74LS47N Pinout
The following figure is the Pinout of SN74LS47N.

Pinout
SN74LS47N CAD Model
The following figures are the Symbol, Footprint and 3D Model of SN74LS47N.

Symbol

Footprint

3D Model
SN74LS47N Features
• Lamp Intensity Modulation Capability (BI/RBO)
• Open-collector Outputs Drive Indicators Directly
• Lamp Test Provision
• Leading/Trailing Zero Suppression
• Input Clamp Diodes Limit High-Speed Termination Effects
Specifications
- TypeParameter
- Mounting Type
The "Mounting Type" in electronic components refers to the method used to attach or connect a component to a circuit board or other substrate, such as through-hole, surface-mount, or panel mount.
Through Hole - Package / Case
refers to the protective housing that encases an electronic component, providing mechanical support, electrical connections, and thermal management.
16-DIP (0.300, 7.62mm) - Surface Mount
having leads that are designed to be soldered on the side of a circuit board that the body of the component is mounted on.
NO - Operating Temperature
The operating temperature is the range of ambient temperature within which a power supply, or any other electrical equipment, operate in. This ranges from a minimum operating temperature, to a peak or maximum operating temperature, outside which, the power supply may fail.
0°C~70°C - Packaging
Semiconductor package is a carrier / shell used to contain and cover one or more semiconductor components or integrated circuits. The material of the shell can be metal, plastic, glass or ceramic.
Tube - JESD-609 Code
The "JESD-609 Code" in electronic components refers to a standardized marking code that indicates the lead-free solder composition and finish of electronic components for compliance with environmental regulations.
e4 - Pbfree Code
The "Pbfree Code" parameter in electronic components refers to the code or marking used to indicate that the component is lead-free. Lead (Pb) is a toxic substance that has been widely used in electronic components for many years, but due to environmental concerns, there has been a shift towards lead-free alternatives. The Pbfree Code helps manufacturers and users easily identify components that do not contain lead, ensuring compliance with regulations and promoting environmentally friendly practices. It is important to pay attention to the Pbfree Code when selecting electronic components to ensure they meet the necessary requirements for lead-free applications.
yes - Part Status
Parts can have many statuses as they progress through the configuration, analysis, review, and approval stages.
Obsolete - Moisture Sensitivity Level (MSL)
Moisture Sensitivity Level (MSL) is a standardized rating that indicates the susceptibility of electronic components, particularly semiconductors, to moisture-induced damage during storage and the soldering process, defining the allowable exposure time to ambient conditions before they require special handling or baking to prevent failures
3 (168 Hours) - Number of Terminations16
- ECCN Code
An ECCN (Export Control Classification Number) is an alphanumeric code used by the U.S. Bureau of Industry and Security to identify and categorize electronic components and other dual-use items that may require an export license based on their technical characteristics and potential for military use.
EAR99 - Terminal Finish
Terminal Finish refers to the surface treatment applied to the terminals or leads of electronic components to enhance their performance and longevity. It can improve solderability, corrosion resistance, and overall reliability of the connection in electronic assemblies. Common finishes include nickel, gold, and tin, each possessing distinct properties suitable for various applications. The choice of terminal finish can significantly impact the durability and effectiveness of electronic devices.
NICKEL PALLADIUM GOLD - HTS Code
HTS (Harmonized Tariff Schedule) codes are product classification codes between 8-1 digits. The first six digits are an HS code, and the countries of import assign the subsequent digits to provide additional classification. U.S. HTS codes are 1 digits and are administered by the U.S. International Trade Commission.
8542.39.00.01 - Voltage - Supply
Voltage - Supply refers to the range of voltage levels that an electronic component or circuit is designed to operate with. It indicates the minimum and maximum supply voltage that can be applied for the device to function properly. Providing supply voltages outside this range can lead to malfunction, damage, or reduced performance. This parameter is critical for ensuring compatibility between different components in a circuit.
4.75V~5.25V - Terminal Position
In electronic components, the term "Terminal Position" refers to the physical location of the connection points on the component where external electrical connections can be made. These connection points, known as terminals, are typically used to attach wires, leads, or other components to the main body of the electronic component. The terminal position is important for ensuring proper connectivity and functionality of the component within a circuit. It is often specified in technical datasheets or component specifications to help designers and engineers understand how to properly integrate the component into their circuit designs.
DUAL - Peak Reflow Temperature (Cel)
Peak Reflow Temperature (Cel) is a parameter that specifies the maximum temperature at which an electronic component can be exposed during the reflow soldering process. Reflow soldering is a common method used to attach electronic components to a circuit board. The Peak Reflow Temperature is crucial because it ensures that the component is not damaged or degraded during the soldering process. Exceeding the specified Peak Reflow Temperature can lead to issues such as component failure, reduced performance, or even permanent damage to the component. It is important for manufacturers and assemblers to adhere to the recommended Peak Reflow Temperature to ensure the reliability and functionality of the electronic components.
NOT SPECIFIED - Number of Functions1
- Supply Voltage
Supply voltage refers to the electrical potential difference provided to an electronic component or circuit. It is crucial for the proper operation of devices, as it powers their functions and determines performance characteristics. The supply voltage must be within specified limits to ensure reliability and prevent damage to components. Different electronic devices have specific supply voltage requirements, which can vary widely depending on their design and intended application.
5V - Terminal Pitch
The center distance from one pole to the next.
2.54mm - Time@Peak Reflow Temperature-Max (s)
Time@Peak Reflow Temperature-Max (s) refers to the maximum duration that an electronic component can be exposed to the peak reflow temperature during the soldering process, which is crucial for ensuring reliable solder joint formation without damaging the component.
NOT SPECIFIED - Pin Count
a count of all of the component leads (or pins)
16 - JESD-30 Code
JESD-30 Code refers to a standardized descriptive designation system established by JEDEC for semiconductor-device packages. This system provides a systematic method for generating designators that convey essential information about the package's physical characteristics, such as size and shape, which aids in component identification and selection. By using JESD-30 codes, manufacturers and engineers can ensure consistency and clarity in the specification of semiconductor packages across various applications and industries.
R-PDIP-T16 - Qualification Status
An indicator of formal certification of qualifications.
Not Qualified - Supply Voltage-Max (Vsup)
The parameter "Supply Voltage-Max (Vsup)" in electronic components refers to the maximum voltage that can be safely applied to the component without causing damage. It is an important specification to consider when designing or using electronic circuits to ensure the component operates within its safe operating limits. Exceeding the maximum supply voltage can lead to overheating, component failure, or even permanent damage. It is crucial to adhere to the specified maximum supply voltage to ensure the reliable and safe operation of the electronic component.
5.25V - Supply Voltage-Min (Vsup)
The parameter "Supply Voltage-Min (Vsup)" in electronic components refers to the minimum voltage level required for the component to operate within its specified performance range. This parameter indicates the lowest voltage that can be safely applied to the component without risking damage or malfunction. It is crucial to ensure that the supply voltage provided to the component meets or exceeds this minimum value to ensure proper functionality and reliability. Failure to adhere to the specified minimum supply voltage may result in erratic behavior, reduced performance, or even permanent damage to the component.
4.75V - Configuration
The parameter "Configuration" in electronic components refers to the specific arrangement or setup of the components within a circuit or system. It encompasses how individual elements are interconnected and their physical layout. Configuration can affect the functionality, performance, and efficiency of the electronic system, and may influence factors such as signal flow, impedance, and power distribution. Understanding the configuration is essential for design, troubleshooting, and optimizing electronic devices.
7 Segment - Interface
In electronic components, the term "Interface" refers to the point at which two different systems, devices, or components connect and interact with each other. It can involve physical connections such as ports, connectors, or cables, as well as communication protocols and standards that facilitate the exchange of data or signals between the connected entities. The interface serves as a bridge that enables seamless communication and interoperability between different parts of a system or between different systems altogether. Designing a reliable and efficient interface is crucial in ensuring proper functionality and performance of electronic components and systems.
BCD - Current - Supply
Current - Supply is a parameter in electronic components that refers to the maximum amount of electrical current that the component can provide to the circuit it is connected to. It is typically measured in units of amperes (A) and is crucial for determining the power handling capability of the component. Understanding the current supply rating is important for ensuring that the component can safely deliver the required current without overheating or failing. It is essential to consider this parameter when designing circuits to prevent damage to the component and ensure proper functionality of the overall system.
7mA - Family
In electronic components, the parameter "Family" typically refers to a categorization or classification system used to group similar components together based on their characteristics, functions, or applications. This classification helps users easily identify and select components that meet their specific requirements. The "Family" parameter can include various subcategories such as resistors, capacitors, diodes, transistors, integrated circuits, and more. Understanding the "Family" of an electronic component can provide valuable information about its compatibility, performance specifications, and potential uses within a circuit or system. It is important to consider the "Family" parameter when designing or troubleshooting electronic circuits to ensure proper functionality and compatibility with other components.
LS - Output Polarity
Output polarity in electronic components refers to the orientation of the output signal in relation to the ground or reference voltage. It indicates whether the output voltage is positive or negative with respect to the ground. Positive output polarity means the signal is higher than the ground potential, while negative output polarity signifies that the signal is lower than the ground. This characteristic is crucial for determining compatibility with other components in a circuit and ensuring proper signal processing.
INVERTED - Logic IC Type
Logic IC Type refers to the type of integrated circuit (IC) that is specifically designed to perform logical operations. These ICs are commonly used in digital electronic devices to process and manipulate binary data according to predefined logic functions. The Logic IC Type parameter typically specifies the specific logic family or technology used in the IC, such as TTL (Transistor-Transistor Logic), CMOS (Complementary Metal-Oxide-Semiconductor), or ECL (Emitter-Coupled Logic). Understanding the Logic IC Type is important for selecting the appropriate IC for a given application, as different logic families have varying characteristics in terms of speed, power consumption, and noise immunity.
SEVEN SEGMENT DECODER/DRIVER - Display Type
Display Type in electronic components refers to the technology used to display information or visuals on a screen or panel. It describes the specific method or technology employed to present data, such as LCD (Liquid Crystal Display), OLED (Organic Light-Emitting Diode), LED (Light-Emitting Diode), or CRT (Cathode Ray Tube). Each display type has its own characteristics, including factors like resolution, color accuracy, viewing angles, power consumption, and response time. Choosing the right display type is crucial for determining the quality and performance of the visual output in electronic devices, such as smartphones, TVs, monitors, and digital signage.
LED - Propagation Delay (tpd)
Propagation delay (tpd) is a crucial parameter in electronic components, especially in digital circuits. It refers to the time taken for a signal to travel from the input of a component to its output. This delay is caused by various factors such as the internal circuitry, interconnections, and the physical properties of the component. Propagation delay is essential to consider in designing circuits to ensure proper timing and functionality. It is typically measured in nanoseconds or picoseconds and plays a significant role in determining the overall performance and speed of electronic systems.
100 ns - Input Conditioning
Input conditioning refers to the process of preparing an input signal for processing by electronic components or systems. This involves filtering, amplifying, and converting the signal to ensure it meets the required specifications for accurate interpretation and processing. Input conditioning typically aims to reduce noise, adjust signal levels, and ensure compatibility with the receiving system's input requirements. It is a critical step in ensuring reliable and accurate performance of electronic devices.
STANDARD - Length19.175mm
- Height Seated (Max)
Height Seated (Max) is a parameter in electronic components that refers to the maximum allowable height of the component when it is properly seated or installed on a circuit board or within an enclosure. This specification is crucial for ensuring proper fit and alignment within the overall system design. Exceeding the maximum seated height can lead to mechanical interference, electrical shorts, or other issues that may impact the performance and reliability of the electronic device. Manufacturers provide this information to help designers and engineers select components that will fit within the designated space and function correctly in the intended application.
4.44mm - Width7.62mm
- RoHS Status
RoHS means “Restriction of Certain Hazardous Substances” in the “Hazardous Substances Directive” in electrical and electronic equipment.
Non-RoHS Compliant
SN74LS47N To 7 Segment
SN74LS47N Alternatives
| Part Number | Description | Manufacturer |
| 7604501EALOGIC | BCD-to-Seven-Segment Decoders/Drivers 16-CDIP -55 to 125 | Texas Instruments |
| 54LS47/BEAJCLOGIC | LS SERIES, SEVEN SEGMENT DECODER/DRIVER, INVERTED OUTPUT, CDIP16, CERDIP-16 | Motorola Mobility LLC |
SN74LS47N Applications
• Signal Processing
• Aerospace
• Defence
• Military
SN74LS47N Package
The following figure is SN74LS47N Package.

Package
SN74LS47N Manufacturer
Rochester Electronics ranks as a global leading semiconductor provider. Due to their products' characteristics of high quality and durability, these products are suitable for long-term production and maintenance in the fields of industry, transportation and high-reliability markets. Their large inventory includes more than 100,000 products and 15 billion units, making them exceed other companies in terms of selection, capabilities, or solutions.
Datasheet PDF
- Datasheets :
What should I do if SN74LS47N is not found in P in Proteus?
Select 74LS from P in Proteus, 74LS47 under the 74LS list, SN74LS47N is a dual in-line plastic package, when placing 74LS47, select DIL16 is dual in-line. SN stands for the Texas company chip.
What is the difference between SN74LS47N and SN74LS47P?
The N and P at the end of SN74LS47N and SN74LS47P are packages marking symbols, and both N and P are dual-in-line plastic packaging. The National Semiconductor Corporation of the United States and others use the N mark for dual-in-line plastic packaging, and the Motorola Company of the United States uses the P mark for dual-inline plastic packaging. Different manufacturers, the same chip.
How to use SN74LS47N in mulitisim to light up the digital tube?
In fact, this chip is not needed, because the general digital tube that can display 0 to 9 has only 4 input terminals. If you want to light up the digital tube, you only need to connect these four input terminals. But it should be noted that from left to right are Q3, Q2, Q1, and Q0.
What is the SN74LS47N?
Low Power Schottky BCD to 7-Segment Decoder/Drivers.
What is the IC for driving lamp buffers?
Common-cathode LEDs.
What circuits have full ripple-blanking input/output controls?
LS49.
What are unique symbols to authenticate input conditions?
Display patterns for BCD input counts above 9.
What are the circuits of the SN74LS47N?
Automatic leading and/or trailing-edge zero-blanking control.
What type of test may be performed at any time when the BI/RBO node is at a high level?
Lamp test.
What does BI stand for?
Overriding blanking input.
What type of binary-coded-decimal does the SN74LS47N accept?
4-bit.
Where are the relative positive-logic output levels shown?
Truth tables.
What are designed to withstand the relatively high voltages required for 7-segment indicators?
Output configurations.
What is the maximum reverse current of the SN74LS47N output?
15 V.
What amount of current can be driven directly from the SN74LS47N high-performance output transistors?
24 mA.
What are unique symbols to authenticate input conditions?
Display patterns for BCD input counts above nine.
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