Texas Instruments
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SN74ALVC245DW
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SN74ALVC245DW

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Level shifting and voltage translation
  • Characteristics: Bi-directional, 8-bit, non-inverting, voltage-level translator
  • Package: SOIC (Small Outline Integrated Circuit)
  • Essence: Translates signals between different voltage levels
  • Packaging/Quantity: Tape and reel, 2500 units per reel

Specifications

  • Supply Voltage Range: 1.65V to 3.6V
  • High-Level Input Voltage: 2.3V to VCC + 0.5V
  • Low-Level Input Voltage: -0.5V to 0.8V
  • High-Level Output Voltage: 2.4V to VCC
  • Low-Level Output Voltage: 0V to 0.4V
  • Maximum Operating Frequency: 400 MHz
  • Number of Channels: 8

Detailed Pin Configuration

The SN74ALVC245DW has a total of 20 pins, which are arranged as follows:

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

Functional Features

  • Bi-directional voltage-level translation between two different voltage domains
  • Non-inverting translation, preserving the logic state of the input signals
  • Wide supply voltage range allows compatibility with various systems
  • High-speed operation, suitable for applications requiring fast signal translation
  • Output enable input for easy control of the direction and flow of data

Advantages and Disadvantages

Advantages: - Allows seamless integration of components operating at different voltage levels - Non-inverting translation ensures accurate signal representation - Wide supply voltage range provides flexibility in system design - High-speed operation enables efficient data transfer

Disadvantages: - Limited to 8-bit data translation - Requires careful consideration of voltage level compatibility to avoid signal distortion

Working Principles

The SN74ALVC245DW is a bidirectional voltage-level translator that facilitates communication between two systems operating at different voltage levels. It utilizes a combination of MOSFETs and CMOS technology to achieve non-inverting translation. The direction of data flow is controlled by the DIR pin, while the OE pin enables or disables the output.

When the DIR pin is set to a logic high, the data flows from the A-side to the B-side. Conversely, when the DIR pin is set to a logic low, the data flows from the B-side to the A-side. The OE pin, when active low, enables the outputs, allowing data transmission.

Detailed Application Field Plans

The SN74ALVC245DW finds application in various scenarios where voltage-level translation is required. Some common application fields include:

  1. Microcontroller interfacing: It enables communication between microcontrollers operating at different voltage levels.
  2. Mixed-voltage systems: It facilitates data transfer between subsystems with varying voltage requirements.
  3. Sensor networks: It allows integration of sensors operating at different voltage levels into a single network.
  4. Industrial automation: It enables communication between control systems and peripheral devices with different voltage specifications.

Detailed and Complete Alternative Models

  1. TXB0108PWR: 8-bit bidirectional voltage-level translator with automatic direction sensing.
  2. PCA9306DCTR: Dual bidirectional I2C-bus and SMBus voltage-level translator.
  3. SN74LVC4245APW: Octal bus transceiver and voltage-level shifter.

These alternative models offer similar functionality and can be considered as alternatives to the SN74ALVC245DW based on specific application requirements.

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Orodhesha maswali na majibu 10 ya kawaida yanayohusiana na utumiaji wa SN74ALVC245DW katika suluhu za kiufundi

Sure! Here are 10 common questions and answers related to the application of SN74ALVC245DW:

  1. Q: What is SN74ALVC245DW? A: SN74ALVC245DW is a bidirectional octal bus transceiver with 3-state outputs, commonly used in digital systems.

  2. Q: What is the voltage range supported by SN74ALVC245DW? A: SN74ALVC245DW supports a voltage range of 1.65V to 3.6V, making it compatible with various logic families.

  3. Q: How many data lines can SN74ALVC245DW handle? A: SN74ALVC245DW can handle 8 data lines, making it suitable for transferring parallel data between different parts of a system.

  4. Q: Can SN74ALVC245DW be used for level shifting? A: Yes, SN74ALVC245DW can be used for level shifting as it supports bidirectional data transfer between different voltage domains.

  5. Q: What is the maximum data rate supported by SN74ALVC245DW? A: SN74ALVC245DW can support data rates up to 400 Mbps, making it suitable for high-speed applications.

  6. Q: Does SN74ALVC245DW have built-in ESD protection? A: Yes, SN74ALVC245DW has built-in ESD protection, which helps protect the device from electrostatic discharge events.

  7. Q: Can SN74ALVC245DW be used in both push-pull and open-drain configurations? A: No, SN74ALVC245DW is designed for push-pull operation only and does not support open-drain configurations.

  8. Q: Is SN74ALVC245DW compatible with TTL logic levels? A: Yes, SN74ALVC245DW is compatible with both TTL and CMOS logic levels, making it versatile for interfacing with different devices.

  9. Q: Can SN74ALVC245DW be used in hot-swapping applications? A: No, SN74ALVC245DW is not designed for hot-swapping applications and requires careful consideration of power sequencing.

  10. Q: What is the package type of SN74ALVC245DW? A: SN74ALVC245DW is available in a standard SOIC-20 package, which is widely used and easy to solder.

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