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74ACT11245DW
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Encyclopedia Entry: 74ACT11245DW

Product Information Overview

Category: Integrated Circuit (IC)

Use: The 74ACT11245DW is a high-speed octal bus transceiver with 3-state outputs. It is designed to provide bidirectional communication between two buses operating at different voltage levels.

Characteristics: - High-speed operation - Wide voltage range compatibility - 3-state outputs for bus isolation - Octal configuration with eight bidirectional channels

Package: The 74ACT11245DW is available in a standard 48-pin plastic dual in-line package (PDIP).

Essence: This IC serves as a bridge between two buses, allowing data transmission between them while maintaining compatibility with different voltage levels.

Packaging/Quantity: The 74ACT11245DW is typically sold in reels or tubes, with quantities varying depending on the supplier.

Specifications

  • Supply Voltage Range: 4.5V to 5.5V
  • Input Voltage Range: 0V to VCC
  • Output Voltage Range: 0V to VCC
  • Operating Temperature Range: -40°C to +85°C
  • Maximum Propagation Delay: 6ns
  • Maximum Output Current: ±24mA

Detailed Pin Configuration

The 74ACT11245DW has a total of 48 pins, which are assigned specific functions. Here is a detailed pin configuration:

  1. OE (Output Enable) 1
  2. A1 (Data Bus A) 1
  3. B1 (Data Bus B) 1
  4. GND (Ground)
  5. B2 (Data Bus B) 2
  6. A2 (Data Bus A) 2
  7. OE (Output Enable) 2
  8. Y1 (Data Bus Y) 1
  9. Y2 (Data Bus Y) 2
  10. VCC (Supply Voltage)
  11. A3 (Data Bus A) 3
  12. B3 (Data Bus B) 3
  13. OE (Output Enable) 3
  14. GND (Ground)
  15. B4 (Data Bus B) 4
  16. A4 (Data Bus A) 4
  17. OE (Output Enable) 4
  18. Y3 (Data Bus Y) 3
  19. Y4 (Data Bus Y) 4
  20. VCC (Supply Voltage)
  21. A5 (Data Bus A) 5
  22. B5 (Data Bus B) 5
  23. OE (Output Enable) 5
  24. GND (Ground)
  25. B6 (Data Bus B) 6
  26. A6 (Data Bus A) 6
  27. OE (Output Enable) 6
  28. Y5 (Data Bus Y) 5
  29. Y6 (Data Bus Y) 6
  30. VCC (Supply Voltage)
  31. A7 (Data Bus A) 7
  32. B7 (Data Bus B) 7
  33. OE (Output Enable) 7
  34. GND (Ground)
  35. B8 (Data Bus B) 8
  36. A8 (Data Bus A) 8
  37. OE (Output Enable) 8
  38. Y7 (Data Bus Y) 7
  39. Y8 (Data Bus Y) 8
  40. VCC (Supply Voltage) 41-48. NC (No Connection)

Functional Features

The 74ACT11245DW offers the following functional features:

  1. Bidirectional Data Transfer: It allows data to be transmitted bidirectionally between two buses, enabling communication in both directions.
  2. Voltage Level Compatibility: The IC supports operation with different voltage levels on the two buses, ensuring compatibility between them.
  3. Output Enable Control: The OE pins enable or disable the outputs, providing 3-state functionality for bus isolation.
  4. High-Speed Operation: With a maximum propagation delay of 6ns, the IC ensures fast data transmission.

Advantages and Disadvantages

Advantages: - Enables communication between buses with different voltage levels - Provides bidirectional data transfer - Supports high-speed operation - Offers 3-state outputs for bus isolation

Disadvantages: - Limited to octal configuration (8 channels) - Requires careful consideration of voltage level compatibility

Working Principles

The 74ACT11245DW operates based on the principles of bidirectional data transfer and voltage level conversion. When enabled, it allows data to flow bidirectionally between two buses, even if they operate at different voltage levels. The IC's internal circuitry ensures proper voltage level translation, maintaining compatibility between the buses.

Detailed Application Field Plans

The 74ACT11245DW finds applications in

Lista 10 Vanliga frågor och svar relaterade till tillämpningen av 74ACT11245DW i tekniska lösningar

Sure! Here are 10 common questions and answers related to the application of 74ACT11245DW in technical solutions:

  1. Q: What is the 74ACT11245DW? A: The 74ACT11245DW is a dual supply octal bus transceiver with configurable voltage translation and 3-state outputs.

  2. Q: What is the purpose of the 74ACT11245DW? A: The purpose of this IC is to facilitate bidirectional level shifting between two different voltage domains in digital systems.

  3. Q: What is the maximum operating voltage for the 74ACT11245DW? A: The maximum operating voltage for this IC is typically 5.5V.

  4. Q: Can the 74ACT11245DW be used for voltage translation between different logic families? A: Yes, it can be used for voltage translation between TTL and CMOS logic families.

  5. Q: How many channels does the 74ACT11245DW have? A: It has 8 bidirectional channels, allowing for simultaneous data transfer in both directions.

  6. Q: What is the output drive capability of the 74ACT11245DW? A: The output drive capability is typically 24mA, which makes it suitable for driving heavily loaded buses.

  7. Q: Does the 74ACT11245DW support 3-state outputs? A: Yes, it supports 3-state outputs, allowing multiple devices to share a common bus without contention.

  8. Q: What is the power supply range for the 74ACT11245DW? A: The power supply range is typically from 4.5V to 5.5V.

  9. Q: Can the 74ACT11245DW be used in high-speed applications? A: Yes, it is designed for high-speed operation and can support data rates up to several hundred megahertz.

  10. Q: Are there any specific precautions to consider when using the 74ACT11245DW? A: It is important to ensure proper decoupling of power supplies and avoid exceeding the maximum voltage and current ratings specified in the datasheet.

Please note that these answers are general and may vary depending on the specific application and requirements. Always refer to the datasheet and consult with an expert for accurate information.