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74LVC245APW,118
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74LVC245APW,118

Product Overview

  • Category: Integrated Circuit
  • Use: Level Shifter/Transceiver
  • Characteristics: Bi-directional voltage level translator with 3-state outputs
  • Package: TSSOP (Thin Shrink Small Outline Package)
  • Essence: Logic Level Converter
  • Packaging/Quantity: Tape and Reel, 2500 pieces per reel

Specifications

  • Supply Voltage Range: 1.65V to 5.5V
  • High-level Input Voltage: 2V to VCC + 0.5V
  • Low-level Input Voltage: -0.5V to 0.8V
  • High-level Output Voltage: VCC - 0.5V
  • Low-level Output Voltage: 0.5V
  • Maximum Operating Frequency: 400MHz
  • Number of Channels: 8

Detailed Pin Configuration

The 74LVC245APW,118 has a total of 20 pins. The pin configuration is as follows:

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

Functional Features

The 74LVC245APW,118 is a bi-directional voltage level translator with 3-state outputs. It allows for bidirectional level shifting between different voltage domains. The device features eight channels, each capable of translating signals from one voltage level to another. The direction of translation can be controlled using the DIR pin. When the DIR pin is high, the data flows from A to B, and when it is low, the data flows from B to A. The OE pin can be used to enable or disable the outputs.

Advantages and Disadvantages

Advantages: - Bi-directional voltage level translation - Wide supply voltage range - High-speed operation - 3-state outputs for easy bus sharing

Disadvantages: - Limited number of channels (8) - TSSOP package may require careful handling during soldering

Working Principles

The 74LVC245APW,118 works by utilizing a combination of MOSFETs and CMOS logic to perform voltage level translation. When the DIR pin is set to high, the input signals on the A side are translated to the corresponding voltage levels on the B side. Conversely, when the DIR pin is set to low, the input signals on the B side are translated to the corresponding voltage levels on the A side. The OE pin can be used to enable or disable the outputs, allowing for easy bus sharing.

Detailed Application Field Plans

The 74LVC245APW,118 is commonly used in various applications that require voltage level translation, such as:

  1. Interfacing between different logic families (e.g., TTL to CMOS)
  2. Communication interfaces (e.g., UART, SPI, I2C) between devices operating at different voltage levels
  3. Level shifting in mixed-voltage systems

Detailed and Complete Alternative Models

Some alternative models that can be used as alternatives to the 74LVC245APW,118 are:

  1. SN74LVC245A - Texas Instruments
  2. MC74LVX245 - ON Semiconductor
  3. CD74HCT245 - Texas Instruments
  4. 74HC245 - NXP Semiconductors
  5. 74ACT245 - Fairchild Semiconductor

These alternative models offer similar functionality and can be used as drop-in replacements for the 74LVC245APW,118 in many applications.

Note: The content provided above is approximately 400 words.

Lista 10 Vanliga frågor och svar relaterade till tillämpningen av 74LVC245APW,118 i tekniska lösningar

Sure! Here are 10 common questions and answers related to the application of 74LVC245APW,118:

  1. Q: What is the function of the 74LVC245APW,118? A: The 74LVC245APW,118 is an octal bus transceiver that can be used for bidirectional level shifting between different voltage domains.

  2. Q: What is the operating voltage range of the 74LVC245APW,118? A: The 74LVC245APW,118 operates within a voltage range of 1.65V to 5.5V.

  3. Q: How many input/output channels does the 74LVC245APW,118 have? A: The 74LVC245APW,118 has 8 input/output channels.

  4. Q: Can the 74LVC245APW,118 handle high-speed data transmission? A: Yes, the 74LVC245APW,118 is designed for high-speed operation and can support data rates up to 400 Mbps.

  5. Q: Does the 74LVC245APW,118 have any built-in protection features? A: Yes, the 74LVC245APW,118 has built-in ESD protection on all inputs and outputs.

  6. Q: Can the 74LVC245APW,118 be used in both 3.3V and 5V systems? A: Yes, the 74LVC245APW,118 is compatible with both 3.3V and 5V systems, making it versatile for various applications.

  7. Q: What is the maximum output current of the 74LVC245APW,118? A: The 74LVC245APW,118 can source or sink up to 32 mA per channel.

  8. Q: Can the 74LVC245APW,118 be used for level shifting between different logic families? A: Yes, the 74LVC245APW,118 is designed to provide bidirectional level shifting between different logic families, such as TTL and CMOS.

  9. Q: Does the 74LVC245APW,118 have any power-saving features? A: Yes, the 74LVC245APW,118 has a low-power mode that reduces power consumption when the device is not actively transmitting data.

  10. Q: What package does the 74LVC245APW,118 come in? A: The 74LVC245APW,118 is available in a TSSOP-20 package, which is a surface-mount package with 20 pins.

Please note that the specific details and answers may vary depending on the datasheet and manufacturer's specifications of the 74LVC245APW,118.