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74FCT245ATPYG8
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Encyclopedia Entry: 74FCT245ATPYG8

Product Overview

Category

The 74FCT245ATPYG8 belongs to the category of integrated circuits (ICs) and specifically falls under the family of bus transceivers.

Use

This product is commonly used in digital systems for bidirectional data transfer between buses with different voltage levels. It acts as a buffer, enabling seamless communication between two separate bus systems.

Characteristics

  • Bidirectional data transfer
  • Voltage level translation
  • High-speed operation
  • Low power consumption
  • Robust design for noise immunity

Package

The 74FCT245ATPYG8 is available in a standard 20-pin TSSOP (Thin Shrink Small Outline Package) package. This package offers compactness and ease of integration into various electronic systems.

Essence

The essence of the 74FCT245ATPYG8 lies in its ability to facilitate efficient and reliable data transfer between buses operating at different voltage levels, ensuring compatibility and smooth communication.

Packaging/Quantity

The product is typically packaged in reels or tubes, containing a quantity of 250 units per package.

Specifications

  • Supply Voltage Range: 4.5V to 5.5V
  • Operating Temperature Range: -40°C to +85°C
  • Input/Output Voltage Levels: TTL/CMOS compatible
  • Maximum Data Rate: 200 MHz
  • Output Drive Strength: ±24 mA
  • Propagation Delay: 3.5 ns (typical)

Detailed Pin Configuration

The 74FCT245ATPYG8 has a total of 20 pins, each serving a specific function. The pin configuration is as follows:

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

Functional Features

  • Bidirectional data transfer between two buses with different voltage levels.
  • Automatic direction control based on the DIR pin.
  • Output enable/disable functionality using the OE pin.
  • High-speed operation allows for efficient data transmission.
  • TTL/CMOS compatible input/output voltage levels ensure compatibility with various digital systems.
  • Robust design provides noise immunity and reliable performance.

Advantages and Disadvantages

Advantages

  • Enables seamless communication between buses operating at different voltage levels.
  • Compact package size facilitates integration into space-constrained electronic systems.
  • High-speed operation ensures efficient data transfer.
  • Low power consumption contributes to energy efficiency.
  • Robust design enhances reliability in noisy environments.

Disadvantages

  • Limited to bidirectional data transfer between two buses only.
  • May require additional components for level shifting in certain applications.
  • Not suitable for unidirectional data transfer scenarios.

Working Principles

The 74FCT245ATPYG8 operates based on the principle of voltage level translation. It consists of internal circuitry that detects the direction of data flow and automatically adjusts the voltage levels accordingly. The DIR pin controls the direction of data transfer, while the OE pin enables or disables the output. When enabled, the IC actively buffers and translates the data between the two buses, ensuring compatibility and reliable communication.

Detailed Application Field Plans

The 74FCT245ATPYG8 finds extensive use in various digital systems where bidirectional data transfer between buses with different voltage levels is required. Some common application fields include:

  1. Microcontroller interfacing with external memory modules.
  2. Communication interfaces between different logic families (e.g., TTL to CMOS).
  3. Data exchange between parallel and serial buses.
  4. Interfacing between different voltage domains within a system.

Detailed and Complete Alternative Models

  1. SN74LV245A: Low-voltage octal bus transceiver with 3-state outputs.
  2. CD74HCT245: High-speed CMOS octal bus transceiver with 3-state

Enumere 10 preguntas y respuestas comunes relacionadas con la aplicación de 74FCT245ATPYG8 en soluciones técnicas

Sure! Here are 10 common questions and answers related to the application of 74FCT245ATPYG8 in technical solutions:

  1. Q: What is the 74FCT245ATPYG8? A: The 74FCT245ATPYG8 is a bidirectional octal bus transceiver with 3-state outputs, commonly used for level shifting and signal buffering.

  2. Q: What is the maximum operating voltage for the 74FCT245ATPYG8? A: The maximum operating voltage for the 74FCT245ATPYG8 is typically 5.5V.

  3. Q: Can the 74FCT245ATPYG8 be used for voltage level shifting between different logic families? A: Yes, the 74FCT245ATPYG8 can be used for voltage level shifting between different logic families, as long as the voltage levels are within its specified range.

  4. Q: How many input/output pins does the 74FCT245ATPYG8 have? A: The 74FCT245ATPYG8 has 8 input pins and 8 output pins, making it an octal transceiver.

  5. Q: What is the maximum data transfer rate supported by the 74FCT245ATPYG8? A: The 74FCT245ATPYG8 supports high-speed data transfer rates up to several hundred megahertz (MHz).

  6. Q: Can the 74FCT245ATPYG8 be used for bi-directional communication between two microcontrollers? A: Yes, the 74FCT245ATPYG8 can be used for bi-directional communication between two microcontrollers or any other digital devices.

  7. Q: Does the 74FCT245ATPYG8 have built-in protection against overvoltage or ESD events? A: The 74FCT245ATPYG8 does not have built-in protection against overvoltage or ESD events. Additional external protection measures may be required.

  8. Q: Can the 74FCT245ATPYG8 drive capacitive loads directly? A: The 74FCT245ATPYG8 can drive small capacitive loads directly, but for larger capacitive loads, additional buffering or driver circuits may be necessary.

  9. Q: What is the power supply voltage range for the 74FCT245ATPYG8? A: The power supply voltage range for the 74FCT245ATPYG8 is typically between 4.5V and 5.5V.

  10. Q: Is the 74FCT245ATPYG8 compatible with TTL logic levels? A: Yes, the 74FCT245ATPYG8 is compatible with TTL logic levels, making it suitable for interfacing with TTL-based systems.

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