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SN74HCT245PWT
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SN74HCT245PWT

Product Overview

Category

SN74HCT245PWT belongs to the category of integrated circuits (ICs).

Use

It is commonly used as a bidirectional octal bus transceiver.

Characteristics

  • High-speed CMOS technology
  • 8-bit wide bidirectional data transfer
  • Non-inverting outputs
  • Schmitt-trigger inputs
  • Low power consumption
  • Wide operating voltage range: 2V to 6V
  • ESD protection exceeds JESD 22

Package

SN74HCT245PWT is available in a TSSOP-20 package.

Essence

The essence of SN74HCT245PWT lies in its ability to facilitate bidirectional data transfer between two buses.

Packaging/Quantity

SN74HCT245PWT is typically packaged in reels and comes in quantities of 2500 units per reel.

Specifications

  • Supply Voltage Range: 2V to 6V
  • Input Voltage Range: 0V to VCC
  • Output Voltage Range: 0V to VCC
  • Operating Temperature Range: -40°C to +85°C
  • Input Capacitance: 3.5pF
  • Output Capacitance: 6pF
  • Propagation Delay Time: 14ns (max)
  • Output Current: ±6mA

Detailed Pin Configuration

  1. OE (Output Enable) - Active LOW output enable input
  2. A1 - Data input/output pin for Port A
  3. B1 - Data input/output pin for Port B
  4. A2 - Data input/output pin for Port A
  5. B2 - Data input/output pin for Port B
  6. A3 - Data input/output pin for Port A
  7. B3 - Data input/output pin for Port B
  8. A4 - Data input/output pin for Port A
  9. B4 - Data input/output pin for Port B
  10. A5 - Data input/output pin for Port A
  11. B5 - Data input/output pin for Port B
  12. A6 - Data input/output pin for Port A
  13. B6 - Data input/output pin for Port B
  14. A7 - Data input/output pin for Port A
  15. B7 - Data input/output pin for Port B
  16. A8 - Data input/output pin for Port A
  17. B8 - Data input/output pin for Port B
  18. GND - Ground
  19. VCC - Supply voltage
  20. DIR (Direction Control) - Direction control input

Functional Features

  • Bidirectional data transfer between two buses
  • Non-inverting outputs
  • Schmitt-trigger inputs for noise immunity
  • High-speed operation
  • Low power consumption
  • Wide operating voltage range
  • ESD protection for enhanced reliability

Advantages and Disadvantages

Advantages

  • High-speed CMOS technology enables fast data transfer
  • Non-inverting outputs simplify interfacing with other devices
  • Schmitt-trigger inputs provide noise immunity
  • Low power consumption helps conserve energy
  • Wide operating voltage range allows compatibility with various systems
  • ESD protection ensures reliability in harsh environments

Disadvantages

  • Limited to 8-bit data transfer
  • May require additional components for specific applications

Working Principles

SN74HCT245PWT operates as a bidirectional octal bus transceiver. It facilitates the transfer of data between two buses, allowing communication in both directions. The direction of data flow is controlled by the DIR pin. When DIR is set to logic HIGH, data is transferred from Port A to Port B, and when DIR is set to logic LOW, data is transferred from Port B to Port A. The OE pin is used to enable or disable the outputs.

Detailed Application Field Plans

SN74HCT245PWT finds applications in various fields, including:

  1. Microcontroller interfacing
  2. Data communication systems
  3. Industrial automation
  4. Automotive electronics
  5. Consumer electronics
  6. Robotics
  7. Embedded systems

Detailed and Complete Alternative Models

  1. SN74HCT245N - DIP-20 package
  2. SN74HCT245D - SOIC-20 package
  3. SN74HCT245PW - TSSOP-20 package
  4. SN74HCT245DW - SOIC-20 package
  5. SN74HCT245DBR - SSOP-20 package

These alternative models offer similar functionality and can be used as substitutes for SN74HCT245PWT depending on specific requirements.

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Lista 10 Vanliga frågor och svar relaterade till tillämpningen av SN74HCT245PWT i tekniska lösningar

Sure! Here are 10 common questions and answers related to the application of SN74HCT245PWT in technical solutions:

  1. Q: What is SN74HCT245PWT? A: SN74HCT245PWT is a high-speed octal bus transceiver with 3-state outputs, commonly used for level shifting and signal buffering in digital systems.

  2. Q: What is the operating voltage range of SN74HCT245PWT? A: The operating voltage range is typically between 4.5V and 5.5V.

  3. Q: How many bidirectional channels does SN74HCT245PWT have? A: SN74HCT245PWT has 8 bidirectional channels, allowing data transmission in both directions.

  4. Q: What is the maximum data transfer rate supported by SN74HCT245PWT? A: SN74HCT245PWT can support data transfer rates up to 25 MHz.

  5. Q: Can SN74HCT245PWT handle different logic levels? A: Yes, SN74HCT245PWT is compatible with both TTL and CMOS logic levels, making it versatile for various applications.

  6. Q: What is the purpose of the 3-state outputs in SN74HCT245PWT? A: The 3-state outputs allow the device to be disconnected from the bus, enabling multiple devices to share the same bus without interference.

  7. Q: Does SN74HCT245PWT have any built-in protection features? A: Yes, SN74HCT245PWT has built-in ESD (Electrostatic Discharge) protection, which helps safeguard against electrostatic damage.

  8. Q: Can SN74HCT245PWT be used for level shifting between different voltage domains? A: Yes, SN74HCT245PWT can be used for level shifting between different voltage domains, as long as the voltage levels are within its operating range.

  9. Q: What is the package type of SN74HCT245PWT? A: SN74HCT245PWT comes in a TSSOP (Thin Shrink Small Outline Package) package, which is compact and suitable for space-constrained designs.

  10. Q: Are there any application notes or reference designs available for SN74HCT245PWT? A: Yes, Texas Instruments provides application notes and reference designs that showcase the use of SN74HCT245PWT in various technical solutions. These resources can be found on their official website.

Please note that these answers are general and may vary depending on specific design requirements and datasheet specifications.