Encyclopedia Entry: 74AVC20T245DGVRG4

Product Information Overview

Category: Integrated Circuit (IC)

Use: The 74AVC20T245DGVRG4 is a bidirectional voltage level translator designed for translating signals between different voltage domains. It can be used in various applications where interfacing between devices operating at different voltage levels is required.

Characteristics: - Bidirectional voltage level translation - Supports voltage levels from 1.2V to 3.6V on the A port and 1.65V to 5.5V on the B port - Low power consumption - High-speed operation - Schmitt-trigger inputs for noise immunity - ESD protection for robustness

Package: The 74AVC20T245DGVRG4 is available in a small form factor package known as VQFN (Very Thin Quad Flat No-Lead). This package offers a compact size and excellent thermal performance.

Essence: The essence of the 74AVC20T245DGVRG4 lies in its ability to provide seamless voltage level translation, enabling communication between devices operating at different voltage levels.

Packaging/Quantity: The 74AVC20T245DGVRG4 is typically sold in reels containing a quantity of 2500 units per reel.

Specifications

• Supply Voltage Range (VCCA): 1.2V to 3.6V
• Supply Voltage Range (VCCB): 1.65V to 5.5V
• Input Voltage Range (VI): GND to VCCA or GND to VCCB
• Output Voltage Range (VO): GND to VCCA or GND to VCCB
• Operating Temperature Range: -40°C to +85°C
• Maximum Data Rate: 400 Mbps

Detailed Pin Configuration

The 74AVC20T245DGVRG4 has a total of 48 pins, which are divided into two ports: Port A and Port B. Each port consists of 24 pins.

Port A (A1-A24): - A1: VCCA - A2-A23: Data Input/Output (bidirectional) - A24: GND

Port B (B1-B24): - B1: VCCB - B2-B23: Data Input/Output (bidirectional) - B24: GND

Functional Features

• Bidirectional voltage level translation: Allows seamless communication between devices operating at different voltage levels.
• High-speed operation: Supports data rates up to 400 Mbps, making it suitable for applications requiring fast signal transmission.
• Schmitt-trigger inputs: Provides noise immunity by ensuring reliable signal transitions even in the presence of noise.
• ESD protection: Incorporates built-in electrostatic discharge protection, enhancing the robustness of the IC.

Advantages and Disadvantages

Advantages: - Wide voltage range support - Low power consumption - Compact package size - High-speed operation - Noise immunity

Disadvantages: - Limited to bidirectional voltage level translation - Not suitable for applications requiring higher data rates

Working Principles

The 74AVC20T245DGVRG4 utilizes a combination of MOSFETs and level-shifting circuitry to achieve bidirectional voltage level translation. It employs a voltage divider network to shift the input signals from one voltage domain to another while maintaining signal integrity.

When an input signal is received on either Port A or Port B, the IC determines the voltage level and translates it to the corresponding voltage level on the other port. This allows seamless communication between devices operating at different voltage levels.

Detailed Application Field Plans

The 74AVC20T245DGVRG4 finds applications in various fields where voltage level translation is required. Some of the common application areas include:

1. Microcontroller interfacing: Enables communication between microcontrollers operating at different voltage levels.
2. Sensor networks: Facilitates data exchange between sensors and microcontrollers with varying voltage requirements.
3. Industrial automation: Allows integration of devices operating at different voltage levels within an automated system.
4. Consumer electronics: Enables compatibility between devices with different voltage interfaces, such as smartphones and peripherals.

Detailed and Complete Alternative Models

1. SN74LVC1T45DBVR: Unidirectional voltage level translator with a single bidirectional channel.
2. TXB0108PWR: Octal bidirectional voltage level translator with 8 channels.
3. PCA9306DCUR: Dual bidirectional I2C-bus and SMBus voltage level translator.

These alternative models offer similar functionality to the 74AVC20T245DGVRG4 and can be considered based on specific application requirements.

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