ON Semiconductor
Bild kan vara representation.
Se specifikationer för produktinformation.
74F245MSA
Visa detalj Datablad

74F245MSA

Product Overview

Category

The 74F245MSA belongs to the category of integrated circuits (ICs) and specifically falls under the family of bus transceivers.

Use

This product is primarily used for bidirectional data transfer between different buses or systems. It enables seamless communication by converting signals from one bus to another.

Characteristics

  • Bidirectional data transfer
  • High-speed operation
  • Low power consumption
  • Wide operating voltage range
  • Robust design for noise immunity

Package

The 74F245MSA comes in a small outline integrated circuit (SOIC) package, which provides ease of handling and compatibility with standard PCB designs.

Essence

The essence of the 74F245MSA lies in its ability to facilitate efficient and reliable data transfer between various bus architectures, ensuring smooth communication within complex electronic systems.

Packaging/Quantity

This product is typically packaged in reels or tubes, containing a specific quantity of ICs per package. The exact packaging and quantity may vary depending on the manufacturer's specifications.

Specifications

  • Supply Voltage: 4.5V to 5.5V
  • Operating Temperature Range: -40°C to +85°C
  • Input/Output Compatibility: TTL
  • Number of Channels: 8
  • Maximum Data Rate: 25MHz
  • Output Drive Capability: ±24mA

Detailed Pin Configuration

The 74F245MSA has a total of 20 pins, each serving a specific function. The pin configuration is as follows:

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

Functional Features

  • Bidirectional data transfer between two buses/systems
  • High-speed operation allows for efficient data transmission
  • Output enable (OE) pin provides control over the direction of data flow
  • Wide operating voltage range ensures compatibility with various systems
  • Robust design minimizes the impact of noise and interference on data integrity

Advantages and Disadvantages

Advantages

  • Enables seamless communication between different bus architectures
  • High-speed operation facilitates rapid data transfer
  • Low power consumption for energy-efficient applications
  • Wide operating voltage range enhances versatility
  • Robust design ensures reliable performance in noisy environments

Disadvantages

  • Limited number of channels (8)
  • May require additional components for complex bus interconnections
  • Not suitable for applications requiring higher data rates beyond 25MHz

Working Principles

The 74F245MSA operates based on a bidirectional transceiver principle. It consists of two sets of data input/output pins (A and B) that allow data to be transferred bidirectionally between two buses or systems. The direction of data flow is controlled by the DIR pin, while the OE pin enables or disables the output. The IC operates at high speeds, ensuring efficient data transmission.

Detailed Application Field Plans

The 74F245MSA finds applications in various fields where bidirectional data transfer between different bus architectures is required. Some of the common application areas include:

  1. Microcontroller interfacing
  2. Data communication systems
  3. Industrial automation
  4. Automotive electronics
  5. Networking equipment
  6. Test and measurement instruments

Detailed and Complete Alternative Models

While the 74F245MSA offers specific features and characteristics, there are alternative models available that cater to different requirements. Some popular alternatives to consider include:

  1. 74HC245: Similar functionality with lower power consumption.
  2. SN74LVC245: Lower voltage operation with improved noise immunity.
  3. CD74ACT245: Higher data rate capability but requires higher power supply voltage.

These alternative models provide flexibility in choosing the most suitable transceiver based on specific application needs.

Word count: 619 words

Lista 10 Vanliga frågor och svar relaterade till tillämpningen av 74F245MSA i tekniska lösningar

Sure! Here are 10 common questions and answers related to the application of 74F245MSA in technical solutions:

  1. Q: What is the 74F245MSA? A: The 74F245MSA is a bidirectional octal bus transceiver with tri-state outputs, commonly used for data transfer between different voltage levels or systems.

  2. Q: What is the maximum operating voltage for the 74F245MSA? A: The maximum operating voltage for the 74F245MSA is typically 5.5V.

  3. Q: How many data lines can the 74F245MSA handle? A: The 74F245MSA can handle 8 data lines, making it suitable for transferring parallel data.

  4. Q: Can the 74F245MSA be used for level shifting between different voltage domains? A: Yes, the 74F245MSA is commonly used for level shifting between different voltage domains, as it supports bidirectional data transfer.

  5. Q: Does the 74F245MSA have built-in protection against bus contention? A: No, the 74F245MSA does not have built-in protection against bus contention. Additional circuitry may be required to prevent bus conflicts.

  6. Q: What is the typical propagation delay of the 74F245MSA? A: The typical propagation delay of the 74F245MSA is around 7-10 nanoseconds.

  7. Q: Can the 74F245MSA be used in high-speed applications? A: Yes, the 74F245MSA is designed for high-speed operation and can be used in applications requiring fast data transfer.

  8. Q: Is the 74F245MSA compatible with TTL logic levels? A: Yes, the 74F245MSA is compatible with TTL logic levels, making it suitable for interfacing with TTL-based systems.

  9. Q: Can the 74F245MSA be used in both parallel and serial data transfer applications? A: The 74F245MSA is primarily designed for parallel data transfer, but it can also be used in serial data transfer applications with appropriate circuitry.

  10. Q: Are there any specific precautions to consider when using the 74F245MSA? A: It is important to ensure proper power supply decoupling and signal integrity measures when using the 74F245MSA to minimize noise and potential issues with data transfer.

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