Toshiba Semiconductor and Storage
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TC74AC640FTEL
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TC74AC640FTEL

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Digital Logic Level Shifter
  • Characteristics: High-speed, low-power, octal bus transceiver
  • Package: TSSOP (Thin Shrink Small Outline Package)
  • Essence: Transfers data between two bidirectional buses operating at different voltage levels
  • Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

  • Supply Voltage: 2.0V to 6.0V
  • Input Voltage Levels: VIL = 0.8V max, VIH = 2.0V min
  • Output Voltage Levels: VOL = 0.1V max, VOH = VCC - 0.1V min
  • Operating Temperature Range: -40°C to +85°C
  • Propagation Delay: 4.5ns typical
  • Output Drive Capability: ±24mA

Detailed Pin Configuration

The TC74AC640FTEL has a total of 20 pins arranged as follows:

┌───┬───┐ A0 ─┤1 20├─ VCC A1 ─┤2 19├─ OE# A2 ─┤3 18├─ I/O0 A3 ─┤4 17├─ I/O1 A4 ─┤5 16├─ I/O2 A5 ─┤6 15├─ I/O3 A6 ─┤7 14├─ I/O4 A7 ─┤8 13├─ I/O5 GND ─┤9 12├─ I/O6 B0 ─┤10 11├─ I/O7 └───┴───┘

Functional Features

  • Bidirectional data transfer between two buses with different voltage levels
  • Automatic direction control based on the OE# (Output Enable) pin
  • High-speed operation with low propagation delay
  • Wide operating voltage range for compatibility with various systems
  • Output drive capability suitable for driving capacitive loads

Advantages and Disadvantages

Advantages: - Efficient level shifting between different voltage domains - Fast data transfer with minimal delay - Low power consumption - Compact package size for space-constrained applications

Disadvantages: - Limited number of bidirectional channels (8 in this case) - Requires careful consideration of voltage compatibility between buses

Working Principles

The TC74AC640FTEL is designed to facilitate the transfer of digital data between two bidirectional buses operating at different voltage levels. It utilizes a combination of level shifting circuitry and automatic direction control to ensure seamless communication.

When the OE# pin is enabled, the device allows bidirectional data flow between the A and B buses. The direction of data transfer is automatically determined based on the voltage levels of the buses. The IC operates within a specified voltage range and provides fast data transfer with minimal delay.

Detailed Application Field Plans

The TC74AC640FTEL finds applications in various fields where there is a need to interface digital systems operating at different voltage levels. Some potential application areas include:

  1. Embedded Systems: Level shifting between microcontrollers and peripheral devices.
  2. Communication Interfaces: Interfacing between different communication protocols or standards.
  3. Industrial Automation: Connecting sensors and actuators operating at different voltage levels.
  4. Consumer Electronics: Interface between different subsystems within a device.
  5. Automotive Electronics: Level shifting in automotive control systems.

Detailed and Complete Alternative Models

  1. SN74LVC245A: Octal bus transceiver with 3-state outputs, operates at 1.65V to 5.5V.
  2. CD4504B: Hex voltage level shifter with high sink/source current capability, operates at 3V to 18V.
  3. PCA9306: Dual bidirectional I2C-bus and SMBus voltage-level translator, operates at 1.2V to 5.5V.

These alternative models offer similar functionality to the TC74AC640FTEL and can be considered based on specific requirements and compatibility with the system.

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قم بإدراج 10 أسئلة وإجابات شائعة تتعلق بتطبيق TC74AC640FTEL في الحلول التقنية

Sure! Here are 10 common questions and answers related to the application of TC74AC640FTEL:

  1. Q: What is TC74AC640FTEL? A: TC74AC640FTEL is a specific model of octal bus transceiver IC (integrated circuit) manufactured by Toshiba.

  2. Q: What is the purpose of TC74AC640FTEL? A: The purpose of TC74AC640FTEL is to provide bidirectional level shifting and voltage translation between two different logic levels in a digital system.

  3. Q: What are the input and output voltage levels supported by TC74AC640FTEL? A: TC74AC640FTEL supports input and output voltage levels compatible with TTL (Transistor-Transistor Logic) and CMOS (Complementary Metal-Oxide-Semiconductor) logic families.

  4. Q: How many channels does TC74AC640FTEL have? A: TC74AC640FTEL has 8 channels, allowing it to handle up to 8 different signals simultaneously.

  5. Q: What is the maximum data transfer rate supported by TC74AC640FTEL? A: TC74AC640FTEL supports a maximum data transfer rate of 24 MHz, making it suitable for high-speed applications.

  6. Q: Can TC74AC640FTEL be used as a level shifter between 3.3V and 5V systems? A: Yes, TC74AC640FTEL can be used as a level shifter between 3.3V and 5V systems, as it supports both voltage levels.

  7. Q: Does TC74AC640FTEL require any external components for operation? A: No, TC74AC640FTEL does not require any external components for basic operation. However, additional decoupling capacitors may be recommended for noise reduction.

  8. Q: What is the power supply voltage range for TC74AC640FTEL? A: The power supply voltage range for TC74AC640FTEL is typically between 2.0V and 5.5V.

  9. Q: Can TC74AC640FTEL handle bi-directional data transfer? A: Yes, TC74AC640FTEL supports bi-directional data transfer, allowing signals to be transmitted in both directions.

  10. Q: Is TC74AC640FTEL available in different package options? A: Yes, TC74AC640FTEL is available in various package options, such as TSSOP (Thin Shrink Small Outline Package) and SOP (Small Outline Package), to suit different application requirements.

Please note that these answers are general and may vary depending on the specific datasheet and manufacturer's specifications of TC74AC640FTEL.