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SN74AHC245N
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SN74AHC245N

Product Overview

Category

SN74AHC245N belongs to the category of integrated circuits (ICs).

Use

It is commonly used as a bidirectional octal bus transceiver.

Characteristics

  • High-speed CMOS technology
  • Wide voltage range: 2 V to 5.5 V
  • Low power consumption
  • Schmitt-trigger inputs for noise immunity
  • 3-state outputs for bus-oriented applications

Package

SN74AHC245N is available in a standard 20-pin DIP (Dual Inline Package) format.

Essence

The essence of SN74AHC245N lies in its ability to facilitate bidirectional data transfer between two buses with different voltage levels.

Packaging/Quantity

SN74AHC245N is typically packaged in tubes or reels, with quantities varying based on customer requirements.

Specifications

  • Supply Voltage Range: 2 V to 5.5 V
  • Input Voltage Range: 0 V to VCC
  • Output Voltage Range: 0 V to VCC
  • Operating Temperature Range: -40°C to +85°C
  • Propagation Delay Time: 6 ns (max)
  • Output Current: ±8 mA

Detailed Pin Configuration

  1. DIR (Direction Control)
  2. OE (Output Enable)
  3. A1 (Input/Output)
  4. B1 (Input/Output)
  5. A2 (Input/Output)
  6. B2 (Input/Output)
  7. A3 (Input/Output)
  8. B3 (Input/Output)
  9. A4 (Input/Output)
  10. B4 (Input/Output)
  11. GND (Ground)
  12. B5 (Input/Output)
  13. A5 (Input/Output)
  14. B6 (Input/Output)
  15. A6 (Input/Output)
  16. B7 (Input/Output)
  17. A7 (Input/Output)
  18. B8 (Input/Output)
  19. A8 (Input/Output)
  20. VCC (Supply Voltage)

Functional Features

  • Bidirectional data transfer between two buses
  • 3-state outputs for bus-oriented applications
  • Schmitt-trigger inputs for noise immunity
  • High-speed operation with low power consumption
  • Wide voltage range compatibility

Advantages and Disadvantages

Advantages

  • Supports bidirectional data transfer
  • Wide voltage range compatibility
  • Low power consumption
  • Noise immunity due to Schmitt-trigger inputs

Disadvantages

  • Propagation delay time may limit high-speed applications
  • Limited output current capacity

Working Principles

SN74AHC245N operates by controlling the direction of data flow between two buses using the DIR pin. When DIR is set to logic high, data flows from A1-A8 to B1-B8, and when DIR is set to logic low, data flows from B1-B8 to A1-A8. The OE pin enables or disables the outputs.

Detailed Application Field Plans

SN74AHC245N finds applications in various fields, including: 1. Microcontroller interfacing 2. Data communication systems 3. Industrial automation 4. Automotive electronics 5. Consumer electronics

Detailed and Complete Alternative Models

Some alternative models that can be considered as alternatives to SN74AHC245N are: 1. SN74LVC245A 2. CD74HCT245E 3. MC74ACT245DW 4. 74HC245D

These models offer similar functionality and characteristics, providing flexibility in choosing the most suitable option for specific applications.

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Lista 10 Vanliga frågor och svar relaterade till tillämpningen av SN74AHC245N i tekniska lösningar

Sure! Here are 10 common questions and answers related to the application of SN74AHC245N:

  1. Q: What is SN74AHC245N? A: SN74AHC245N is a type of octal bus transceiver integrated circuit (IC) that can be used for bidirectional level shifting and voltage translation.

  2. Q: What is the purpose of SN74AHC245N? A: The purpose of SN74AHC245N is to enable communication between two systems operating at different voltage levels, ensuring compatibility and reliable data transfer.

  3. Q: What voltage levels does SN74AHC245N support? A: SN74AHC245N supports voltage levels ranging from 2V to 5.5V, making it suitable for interfacing between various logic families.

  4. Q: How many channels does SN74AHC245N have? A: SN74AHC245N has 8 bidirectional channels, allowing for simultaneous data transfer in both directions.

  5. Q: Can SN74AHC245N handle high-speed data transfer? A: Yes, SN74AHC245N is designed to support high-speed data transfer with a maximum propagation delay of 6 ns.

  6. Q: Is SN74AHC245N compatible with TTL logic? A: Yes, SN74AHC245N is compatible with TTL logic levels, making it suitable for interfacing between TTL and CMOS logic.

  7. Q: Does SN74AHC245N require external pull-up or pull-down resistors? A: No, SN74AHC245N has built-in input/output (I/O) resistors, eliminating the need for external pull-up or pull-down resistors.

  8. Q: Can SN74AHC245N be used in bi-directional data buses? A: Yes, SN74AHC245N is commonly used in bi-directional data buses to enable bidirectional communication between multiple devices.

  9. Q: What is the maximum current that SN74AHC245N can source or sink? A: SN74AHC245N can source or sink up to 8 mA of current per channel, making it suitable for driving standard logic levels.

  10. Q: Are there any special considerations when using SN74AHC245N? A: It is important to ensure proper decoupling and bypass capacitors are used near the power supply pins of SN74AHC245N to minimize noise and ensure stable operation.

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