Texas Instruments
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SN74ALS561ADWRE4
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SN74ALS561ADWRE4

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Logic Function
  • Characteristics: Advanced Schottky (ALS) Technology, 8-Bit D-Type Latch with 3-State Outputs
  • Package: SOIC-20 Wide
  • Essence: This IC is designed to provide latch functionality in digital circuits, allowing data to be stored and outputted as needed.
  • Packaging/Quantity: Available in reels of 2500 units

Specifications

  • Supply Voltage Range: 4.5V to 5.5V
  • High-Level Input Voltage: 2.0V (Min), 7.0V (Max)
  • Low-Level Input Voltage: -0.5V (Min), 0.8V (Max)
  • High-Level Output Voltage: 2.4V (Min), VCC (Max)
  • Low-Level Output Voltage: 0.4V (Min), 0.5V (Max)
  • Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

  1. GND (Ground)
  2. D0 (Data Input 0)
  3. D1 (Data Input 1)
  4. D2 (Data Input 2)
  5. D3 (Data Input 3)
  6. D4 (Data Input 4)
  7. D5 (Data Input 5)
  8. D6 (Data Input 6)
  9. D7 (Data Input 7)
  10. CLK (Clock Input)
  11. LE (Latch Enable Input)
  12. OE (Output Enable Input)
  13. Q0 (Output 0)
  14. Q1 (Output 1)
  15. Q2 (Output 2)
  16. Q3 (Output 3)
  17. Q4 (Output 4)
  18. Q5 (Output 5)
  19. Q6 (Output 6)
  20. VCC (Supply Voltage)

Functional Features

  • 8-bit D-type latch with 3-state outputs
  • Latch enable and output enable control inputs for flexible data storage and output control
  • Advanced Schottky (ALS) technology for high-speed operation
  • Wide operating temperature range for versatile applications

Advantages and Disadvantages

Advantages: - High-speed operation due to ALS technology - Flexible data storage and output control - Wide operating temperature range allows for various environments

Disadvantages: - Limited number of outputs (6 in total) - Requires external clock and control signals for proper operation

Working Principles

The SN74ALS561ADWRE4 is a latch IC that stores data based on the input signals received. The latch enable (LE) input controls when the data is stored, while the output enable (OE) input determines when the stored data is outputted. The clock (CLK) input synchronizes the data storage and output operations.

When the LE input is high, the data inputs (D0-D7) are latched and stored internally. The stored data can then be accessed through the output pins (Q0-Q6) when the OE input is low. The CLK input ensures that the data is captured and stored at the appropriate time.

Detailed Application Field Plans

The SN74ALS561ADWRE4 is commonly used in various digital systems where data storage and output control are required. Some specific application fields include:

  1. Microcontrollers: Used to store and output data from peripheral devices.
  2. Communication Systems: Enables data buffering and synchronization between different components.
  3. Industrial Automation: Facilitates control and monitoring of processes by storing and outputting relevant data.
  4. Automotive Electronics: Provides latch functionality for various automotive systems, such as engine control units and infotainment systems.

Detailed and Complete Alternative Models

  1. SN74ALS563ADWRE4: Similar to SN74ALS561ADWRE4, but with 8 outputs instead of 6.
  2. SN74ALS564ADWRE4: 8-bit D-type latch with 3-state outputs and additional features like parity generation/checking.
  3. SN74ALS565ADWRE4: 8-bit transparent latch with 3-state outputs, allowing direct data transfer without the need for clock input.

These alternative models offer similar functionality with slight variations to cater to different application requirements.

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Liste 10 almindelige spørgsmål og svar relateret til anvendelsen af SN74ALS561ADWRE4 i tekniske løsninger

Sure! Here are 10 common questions and answers related to the application of SN74ALS561ADWRE4 in technical solutions:

  1. Q: What is SN74ALS561ADWRE4? A: SN74ALS561ADWRE4 is a specific type of integrated circuit (IC) that functions as a 4-bit binary counter with an asynchronous reset.

  2. Q: What is the purpose of SN74ALS561ADWRE4? A: The purpose of this IC is to count binary numbers from 0 to 15 and provide an output signal indicating the current count value.

  3. Q: What are the voltage requirements for SN74ALS561ADWRE4? A: SN74ALS561ADWRE4 operates on a supply voltage range of 4.5V to 5.5V.

  4. Q: How many inputs and outputs does SN74ALS561ADWRE4 have? A: This IC has four inputs (A, B, C, D) for setting the initial count value and one output (Q) to indicate the current count.

  5. Q: Can SN74ALS561ADWRE4 be used in both synchronous and asynchronous applications? A: No, SN74ALS561ADWRE4 is specifically designed for asynchronous counting applications.

  6. Q: What is the maximum clock frequency supported by SN74ALS561ADWRE4? A: The maximum clock frequency for this IC is typically around 25 MHz.

  7. Q: Does SN74ALS561ADWRE4 have any built-in error detection or correction features? A: No, SN74ALS561ADWRE4 does not have any built-in error detection or correction capabilities.

  8. Q: Can multiple SN74ALS561ADWRE4 ICs be cascaded together for higher bit counting? A: Yes, multiple SN74ALS561ADWRE4 ICs can be cascaded together to count higher bit numbers by connecting the carry output of one IC to the clock input of the next.

  9. Q: What is the power consumption of SN74ALS561ADWRE4? A: The power consumption of this IC depends on various factors such as clock frequency and load capacitance, but it typically ranges from a few milliwatts to a few watts.

  10. Q: Are there any specific precautions to consider when using SN74ALS561ADWRE4 in a circuit? A: It is important to ensure proper decoupling capacitors are used near the power supply pins of the IC to minimize noise and voltage fluctuations. Additionally, care should be taken to avoid exceeding the maximum voltage and temperature ratings specified in the datasheet.