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Name: SN74LS47N
Brand: Texas Instruments
SKU: SN74LS47N
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Any Feature, including a modified Existing Feature, that is not an Existing Feature.

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Texas Instruments SN74LS47N

Part No.:: SN74LS47N

Manufacturer:: Texas Instruments

Package:: 16-DIP (0.300, 7.62mm)

Datasheet:: SN74LS47N.pdf

Description:: IC DRVR 7 SEGMENT 16DIP

In Stock:: 2018

Quantity:: Add To Cart

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SN74LS47N Specifications

Packaging:
Bulk,Tube
Series:
-
ProductStatus:
Active
DisplayType:
LED
Configuration:
7 Segment
Interface:
BCD
DigitsorCharacters:
-
Current-Supply:
7 mA
Voltage-Supply:
4.75V ~ 5.25V
OperatingTemperature:
0°C ~ 70°C
MountingType:
Through Hole

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SN74LS47N information

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SN74LS47N Decoder/Driver Explained: Key Features and Tips

The SN74LS47N could be a popular BCD-to-7-segment decoder/driver IC that rearranges the method of driving a 7-segment show. It's a significant component in different advanced frameworks where numerical shows are required, such as clocks, meters, and counters. Understanding the SN74LS47N's features, stick configuration, and viable tips for its utilization can assist you get the foremost out of this flexible chip.

Catalog

Presentation to the SN74LS47N

The SN74LS47N has a place to the 74LS arrangement of coordinates circuits, a family known for its moo control utilization and vigorous execution. Particularly outlined for driving common-cathode 7-segment shows, this decoder/driver deciphers Binary-Coded Decimal (BCD) inputs into the suitable section yields to show the comparing decimal digits.

One of the standout highlights of the SN74LS47N is its capacity to handle open-collector yields, which implies it can straightforwardly drive Driven fragments without requiring extra resistors. This makes the SN74LS47N not as it were helpful but too effective in lessening the number of outside components required in your circuit plan.

SN74LS47N Pinout

Understanding the SN74LS47N pinout is significant for successful circuit plan. The 7447 pinout is basic, with each stick serving particular parts, such as BCD inputs and segment outputs. This helps in quickly diagnosing issues, especially if the display isn't working as expected, by checking control pins like BI and LT.

Pin Name

Description

Binary Input B

Binary Input C

Lamp Test Input, active low

RBI

Ripple Blanking Input, active low

Binary Input D

Binary Input A

BI/RBO

Blanking Input / Ripple Blanking Output

GND

Ground (0V)

Segment f Output

Segment g Output

Segment a Output

Segment b Output

Segment c Output

Segment d Output

Segment e Output

VCC

Power Supply (+5V)

SN74LS47N CAD Model

SN74LS47N CAD Model1

Key Features of the SN74LS47N

Feature

Description

BCD to 7-Segment Decoding

The SN74LS47N accepts a 4-bit BCD input and decodes it into a 7-segment display output. The output pins correspond to each segment of the display, and they light up in the pattern needed to represent the digit.

Open-Collector Outputs

The open-collector outputs allow for direct LED driving, which simplifies the circuit by eliminating the need for external current-limiting resistors. This feature is particularly useful in power-sensitive applications.

Lamp Test Capability

The SN74LS47N includes a lamp test input, which, when activated, lights up all segments of the display. This is helpful for checking the functionality of all the segments in the display during the initial setup or maintenance.

Blanking Input

The blanking input on the SN74LS47N allows you to turn off all segments, effectively blanking the display without altering the data inputs. This is especially useful in applications where you need to control the display visibility programmatically.

Ripple Blanking

The ripple blanking input and output help in cascading multiple decoders in multi-digit displays. It ensures that leading zeros are not displayed, which is crucial for a clean and professional-looking output.

Practical Tips for Using the SN74LS47N

1. Control Supply Contemplations

The SN74LS47N works inside a voltage run of 4.75V to 5.25V, normal for the 74LS arrangement. Guaranteeing a steady control supply inside this extend is basic for solid operation. Any noteworthy deviation may result in erroneous yields or harm to the IC.

2. Dodging Common Botches

A common botch when utilizing the SN74LS47N is ignoring to tie unused inputs to a characterized rationale level (either tall or moo). Coasting inputs can cause erratic behavior within the yield, driving to sporadic show designs.

3. Handling Open-Collector Outputs

Since the SN74LS47N features open-collector outputs, ensure that your display is common-cathode. Using a common-anode display would result in the segments not lighting up, as the open-collector output would be unable to sink the required current.

4. Debugging Display Issues

If your UTM display output is not active, double-check the connections, especially around the BI and LT pins. Ensure that BI is not unintentionally grounded, as this would disable the output. Similarly, verify that the LT pin is not being held high when it shouldn't be, as this would force all segments to light up, regardless of the input.

Application in Multi-Digit Displays

The SN74LS47N is particularly useful in multi-digit display applications. By cascading multiple SN74LS47Ns, you can drive displays with more than one digit. The ripple blanking feature helps ensure that leading zeros are not displayed, maintaining a neat and concise output.

When cascading, connect the ripple blanking output (RBO) of the first decoder to the ripple blanking input (RBI) of the next. This setup ensures that if the first digit is zero, it won't be displayed unless necessary.

SN74LS47N Packaging Outline

SN74LS47N Packaging Outline3

Utilizing the 74LS Series Part Number and Symbols

The 74LS series part number and symbols provide valuable information for selecting the right component for your application. The "47" in SN74LS47N denotes that it's a BCD to 7-segment decoder/driver, while the "LS" indicates it belongs to the Low-power Schottky series, which is known for its reduced power consumption compared to other 7400 series components.

Component

Symbol Description

Function

74LS00

NAND gate (circle and AND gate symbol)

Performs a NOT-AND operation

74LS08

AND gate (D-shaped symbol)

Performs a logical AND operation

74LS02

NOR gate (circle and OR gate symbol)

Performs a NOT-OR operation

74LS32

OR gate (curved symbol)

Performs a logical OR operation

74LS86

XOR gate (curved line with OR gate symbol)

Performs a logical Exclusive-OR operation

74LS04

Inverter (triangle with a circle)

Performs a NOT operation (inversion)

74LS47

Decoder/Driver (logic block with inputs/outputs)

Decodes BCD to seven-segment display

Understanding the centrality of these images can assist you make educated choices when selecting components for your ventures, guaranteeing compatibility and ideal execution.

Investigating the 7447 Datasheet

The 7447 datasheet is an basic asset for anybody working with the SN74LS47N. It gives point by point data around the IC's electrical characteristics, timing graphs, and ordinary application circuits. By studying the datasheet, you'll be able pick up a more profound understanding of how the SN74LS47N works and how to maximize its execution in your plans.

When planning circuits, referencing the 74ls47 datasheet can assist you maintain a strategic distance from common pitfalls and guarantee that your circuit works as planning. It too gives knowledge into the IC's restrictions, such as most extreme current evaluations and control scattering, permitting you to plan with security and unwavering quality in intellect.

Parameter

Description

IC Number

7447

Function

BCD to 7-Segment Decoder/Driver

Inputs

4 (A, B, C, D)

Outputs

7 (a, b, c, d, e, f, g)

Conclusion

The SN74LS47N may be a flexible and solid component that plays a pivotal part in driving 7-segment shows in computerized frameworks. By understanding its features, 74LS47 pin configuration, and commonsense applications, you'll be able successfully coordinated this decoder/driver into your ventures. Whether you're building a straightforward counter or a multi-digit show framework, the SN74LS47N offers the execution and ease of utilize that make it a go-to choice for engineers and specialists alike.

By taking after the tips and rules laid out in this article, you willbe well-equipped to handle any challenges that emerge when working with the SN74LS47N. Whether you're troubleshooting a show issue or planning a unused circuit, understanding this IC will without a doubt improve your capacity to make dependable, high-quality computerized frameworks.

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6. What is the process for return or replacement of SN74LS47N?

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(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.

(2)We are informed of the defect described above within 90 days after the delivery of SN74LS47N.

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