Texas Instruments
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SN74HC645NG4
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SN74HC645NG4

Product Overview

Category

SN74HC645NG4 belongs to the category of integrated circuits (ICs).

Use

This product is commonly used for signal level shifting and voltage translation in various electronic devices.

Characteristics

  • High-speed operation
  • Wide voltage range
  • Low power consumption
  • Compatibility with TTL, CMOS, and HC logic families

Package

SN74HC645NG4 is available in a standard 20-pin DIP (Dual In-line Package) format.

Essence

The essence of SN74HC645NG4 lies in its ability to facilitate seamless communication between different logic levels within an electronic system.

Packaging/Quantity

SN74HC645NG4 is typically packaged in reels or tubes, with each reel containing approximately 2500 units.

Specifications

  • Supply Voltage: 2V to 6V
  • Input Voltage: 0V to VCC
  • Output Voltage: 0V to VCC
  • Operating Temperature Range: -40°C to +85°C
  • Propagation Delay: 9 ns (max)
  • Output Current: ±6 mA

Detailed Pin Configuration

  1. A1 - Input/Output Port A, Bit 1
  2. OE - Output Enable
  3. A2 - Input/Output Port A, Bit 2
  4. GND - Ground
  5. A3 - Input/Output Port A, Bit 3
  6. B3 - Input/Output Port B, Bit 3
  7. A4 - Input/Output Port A, Bit 4
  8. B4 - Input/Output Port B, Bit 4
  9. A5 - Input/Output Port A, Bit 5
  10. B5 - Input/Output Port B, Bit 5
  11. A6 - Input/Output Port A, Bit 6
  12. B6 - Input/Output Port B, Bit 6
  13. A7 - Input/Output Port A, Bit 7
  14. B7 - Input/Output Port B, Bit 7
  15. VCC - Supply Voltage
  16. DIR - Direction Control
  17. B1 - Input/Output Port B, Bit 1
  18. B2 - Input/Output Port B, Bit 2
  19. GND - Ground
  20. NC - No Connection

Functional Features

  • Bidirectional voltage translation between two logic levels
  • Non-inverting level shifting
  • High-speed data transmission
  • Output enable control for flexible operation

Advantages and Disadvantages

Advantages

  • Wide voltage range compatibility
  • Low power consumption
  • High-speed operation
  • Easy integration with various logic families

Disadvantages

  • Limited output current capacity
  • Propagation delay may affect real-time applications

Working Principles

SN74HC645NG4 operates by receiving input signals from one logic level and translating them to another logic level using a bidirectional voltage translation mechanism. The direction of translation is controlled by the DIR pin. When the DIR pin is set to a specific logic level, the corresponding input/output ports are enabled, allowing data to flow in the desired direction.

Detailed Application Field Plans

SN74HC645NG4 finds extensive application in various electronic systems, including but not limited to: - Microcontrollers - Data communication devices - Industrial automation systems - Consumer electronics - Automotive electronics

Detailed and Complete Alternative Models

Some alternative models that provide similar functionality to SN74HC645NG4 include: - CD74HCT245E - MC74VHC245DT - SN74LVC245APW

These alternatives can be considered based on specific requirements and compatibility with the existing system.

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací SN74HC645NG4 v technických řešeních

Sure! Here are 10 common questions and answers related to the application of SN74HC645NG4 in technical solutions:

  1. Q: What is SN74HC645NG4? A: SN74HC645NG4 is a high-speed octal bus transceiver with 3-state outputs, commonly used for bidirectional data transfer between different voltage levels.

  2. Q: What is the operating voltage range of SN74HC645NG4? A: SN74HC645NG4 operates within a voltage range of 2V to 6V.

  3. Q: Can SN74HC645NG4 be used for level shifting between different voltage domains? A: Yes, SN74HC645NG4 can be used as a level shifter to enable communication between devices operating at different voltage levels.

  4. Q: How many bidirectional channels does SN74HC645NG4 have? A: SN74HC645NG4 has 8 bidirectional channels, allowing for simultaneous data transfer in both directions.

  5. Q: What is the maximum data transfer rate supported by SN74HC645NG4? A: SN74HC645NG4 supports high-speed data transfer up to 100 MHz.

  6. Q: Can SN74HC645NG4 handle multiple voltage levels simultaneously? A: No, SN74HC645NG4 is designed to work with a single voltage level at a time. It cannot handle multiple voltage levels simultaneously.

  7. Q: Does SN74HC645NG4 have built-in protection features? A: Yes, SN74HC645NG4 has built-in ESD (Electrostatic Discharge) protection on all inputs and outputs, providing robustness against electrostatic events.

  8. Q: Can SN74HC645NG4 be used in both digital and analog applications? A: SN74HC645NG4 is primarily designed for digital applications, but it can also be used in certain analog applications where bidirectional data transfer is required.

  9. Q: What is the power supply voltage range for SN74HC645NG4? A: The power supply voltage range for SN74HC645NG4 is typically between 2V and 6V.

  10. Q: Are there any specific precautions to consider when using SN74HC645NG4? A: It is important to ensure that the voltage levels of the devices connected to SN74HC645NG4 are within its specified operating range. Additionally, proper decoupling capacitors should be used to minimize noise and ensure stable operation.

Please note that these answers are general and may vary depending on the specific application and requirements.