SN74LS145DR

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SN74LS145DR

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IC DECODER 1 X 4:10 16SOIC

  • Nhà sản xuấtTexas Dụng cụ

  • Ông. Phần #SN74LS145DR

  • Gói SOIC (D)-16

  • Có sẵn5652

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Thông số kỹ thuật

thuộc tính Giá trị
Package Tape & Reel (TR),Cut Tape (CT)
Series 74LS
ProductStatus Active
Type Decoder
Circuit 1 x 4:10
IndependentCircuits 1
Current-OutputHighLow -, 80mA
VoltageSupplySource Single Supply
Voltage-Supply 4.75V ~ 5.25V
OperatingTemperature 0°C ~ 70°C
MountingType Surface Mount
Package/Case 16-SOIC (0.154, 3.90mm Width)

Tổng quan

Description

The SN74LS145DR is a BCD-to-decimal decoder/driver integrated circuit from Texas Instruments. It is part of the 74LS series, known for its low-power Schottky logic. This IC is designed to accept binary-coded decimal (BCD) inputs and provide 10 mutually exclusive outputs corresponding to the decimal equivalent of the BCD input. It features active low outputs, which means they are enabled when a logic low is present.
Key Features:
- Input: 4-bit BCD (Binary-Coded Decimal)
- Output: 10 active-low decoded outputs
- Supply Voltage: Typically 5V
- Low Power Consumption: Due to the Schottky logic
- High-Speed Operation: Faster than standard TTL
- Package: Available in SOIC-16 (Small Outline Integrated Circuit with 16 pins)
Applications for the SN74LS145DR include driving numerical displays, LED indicators, and as part of digital systems where BCD to decimal decoding is needed. Its ability to sink current makes it suitable for directly driving small loads like LED segments.

Equivalent

The SN74LS145DR is a BCD to Decimal Decoder/Driver. Equivalent products include:
1. NTE74LS145 - NTE Electronics' equivalent.
2. SN74145N - Texas Instruments' older version.
3. MC14511BCP - On Semiconductor's version.
4. CD4511BE - Texas Instruments' CMOS equivalent.
These alternatives may vary slightly in voltage or current ratings, so it's essential to verify compatibility with your specific application.

Features

The SN74LS145DR is a BCD-to-decimal decoder/driver with features tailored for driving indicators and other displays. It is part of the 74LS logic family, known for its low power consumption and compatibility with TTL logic levels. Key features include:
1. BCD to Decimal Decoding: Converts a 4-bit binary-coded decimal input into a one-of-ten output, suitable for driving 10-line displays.
2. Open-Collector Outputs: These can sink current, allowing for connection to a higher voltage output or LED displays.
3. High Fan-Out Capability: Supports driving multiple outputs due to open-collector configuration.
4. TTL Compatible: Operates comfortably within the TTL voltage levels for seamless integration into TTL-based systems.
5. Low Power Dissipation: The LS series is designed for reduced power consumption compared to older TTL series.
6. Compact Packaging: Available in small outline packages (SOIC), suitable for space-constrained applications.
This makes the SN74LS145DR suitable for applications requiring reliable BCD to decimal conversion with efficient power usage and space-saving benefits.

Pinout

The SN74LS145DR is a BCD-to-decimal decoder IC. It is part of the 74LS series of TTL logic devices. The device comes in a 16-pin SOIC (Small Outline Integrated Circuit) package. It functions as a 4-to-10 line decoder or demultiplexer.
Here is a concise breakdown of the pin functions:
1. Pins 1-4 (A, B, C, D): These are the BCD input pins. They accept a 4-bit binary-coded-decimal input.
2. Pin 5 (GND): Ground pin for the power supply.
3. Pins 6-13 (Y0-Y7): These are the active-low output pins, corresponding to decimal outputs 0-7.
4. Pin 14 (Y8): Active-low output pin for decimal output 8.
5. Pin 15 (Y9): Active-low output pin for decimal output 9.
6. Pin 16 (VCC): Power supply pin.
The SN74LS145DR decodes the binary input and activates one of the ten outputs, corresponding to the decimal equivalent of the BCD input, while all other outputs remain high.

Manufacturer

The SN74LS145DR is manufactured by Texas Instruments (TI). Texas Instruments is a well-known American technology company that designs and manufactures semiconductors and various integrated circuits. Their products are widely used in computing, telecommunications, automotive, and consumer electronics industries. TI is recognized for its innovation in analog chips and embedded processors, making it a significant player in the electronics market.

Application

The SN74LS145DR is a BCD to decimal decoder/driver IC primarily used in applications requiring digit selection and display driving. Key application areas include:
1. Digital Displays: Driving LED displays by converting binary-coded decimal inputs to decimal outputs.
2. Data Decoding: Interfacing with microprocessors to decode binary data for various digital systems.
3. Multiplexing: Selecting one out of several data lines for transmission in data routing applications.
4. Control Systems: Used in devices requiring controlled actuation of circuits based on decoded input, such as in industrial control panels.
Its TTL logic compatibility and open-collector outputs make it suitable for a wide range of electronic projects and systems.

Package

The SN74LS145DR is a BCD to Decimal Decoder/Driver IC, and the "DR" in its designation indicates it's in a small-outline integrated circuit (SOIC) package type. The SOIC package is a surface-mount package that is commonly used for its compact size and ease of mounting on printed circuit boards.

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