NXP USA Inc.
Изображение может быть репрезентативным.
Подробную информацию о продукте см. в характеристиках.
PCA9544APW/G-T
Посмотреть детали Таблицы данных

PCA9544APW/G-T

Introduction

The PCA9544APW/G-T is a multiplexer/demultiplexer belonging to the category of integrated circuits. This device is commonly used in electronic systems for its ability to switch between multiple I2C buses, making it an essential component in various applications.

Basic Information Overview

  • Category: Integrated Circuit
  • Use: Multiplexing/Demultiplexing I2C Buses
  • Characteristics: Low RON, Low Power Consumption
  • Package: TSSOP-14
  • Essence: I2C Bus Switch
  • Packaging/Quantity: Tape & Reel (2500 units per reel)

Specifications

  • Supply Voltage: 1.65V to 5.5V
  • I2C Compatibility: Standard-mode, Fast-mode, and Fast-mode Plus
  • Operating Temperature: -40°C to 85°C
  • Input/Output Capacitance: 10pF
  • On-state Resistance: 7Ω (max)
  • Quiescent Current: 2µA (max)

Detailed Pin Configuration

The PCA9544APW/G-T features a TSSOP-14 package with the following pin configuration: 1. SCL1: I2C Clock Input/Output for Channel 1 2. SDA1: I2C Data Input/Output for Channel 1 3. EN: Enable Input 4. SCL2: I2C Clock Input/Output for Channel 2 5. SDA2: I2C Data Input/Output for Channel 2 6. A0: Address Input 7. GND: Ground 8. NC: No Connection 9. NC: No Connection 10. VCC: Supply Voltage 11. SCL3: I2C Clock Input/Output for Channel 3 12. SDA3: I2C Data Input/Output for Channel 3 13. SCL4: I2C Clock Input/Output for Channel 4 14. SDA4: I2C Data Input/Output for Channel 4

Functional Features

  • Allows switching between multiple I2C buses
  • Low on-state resistance minimizes signal distortion
  • Supports standard and fast I2C modes
  • Enables communication with multiple I2C devices using a single bus

Advantages and Disadvantages

Advantages

  • Efficiently manages multiple I2C devices
  • Low power consumption
  • Wide supply voltage range

Disadvantages

  • Limited to 4 channels
  • Requires external pull-up resistors for I2C buses

Working Principles

The PCA9544APW/G-T operates by enabling one of the four channels at a time, allowing bidirectional voltage-level translation between any of the channels. When a particular channel is enabled, the SCL and SDA pins are connected to the I2C bus, facilitating communication with the connected I2C devices.

Detailed Application Field Plans

The PCA9544APW/G-T finds extensive application in various fields, including: - Industrial Automation - Consumer Electronics - Automotive Systems - Medical Devices - Communication Equipment

Detailed and Complete Alternative Models

Some alternative models to the PCA9544APW/G-T include: - PCA9543APW/G-T: 2-channel I2C bus switch - TCA9548A: 8-channel I2C bus switch - TS3A5017: 4-channel analog switch

In conclusion, the PCA9544APW/G-T serves as a crucial component in managing I2C communication in electronic systems, offering efficient multiplexing and demultiplexing capabilities while catering to a wide range of applications.

Word Count: 443

Перечислите 10 распространенных вопросов и ответов, связанных с применением PCA9544APW/G-T в технических решениях.

  1. What is the PCA9544APW/G-T?
    The PCA9544APW/G-T is a low-voltage 4-channel I2C and SMBus multiplexer with reset.

  2. What is the operating voltage range of PCA9544APW/G-T?
    The operating voltage range of PCA9544APW/G-T is 1.65V to 5.5V.

  3. How many channels does PCA9544APW/G-T have?
    PCA9544APW/G-T has 4 channels for I2C and SMBus communication.

  4. What is the purpose of using PCA9544APW/G-T in technical solutions?
    PCA9544APW/G-T is used to enable multiple I2C or SMBus devices to be controlled by a single host controller.

  5. Can PCA9544APW/G-T be used for level shifting?
    Yes, PCA9544APW/G-T can be used for level shifting between different voltage domains.

  6. What is the maximum frequency supported by PCA9544APW/G-T?
    PCA9544APW/G-T supports a maximum frequency of 400kHz.

  7. Is PCA9544APW/G-T suitable for battery-powered applications?
    Yes, PCA9544APW/G-T is suitable for battery-powered applications due to its low operating voltage range.

  8. Can PCA9544APW/G-T be cascaded to expand the number of channels?
    Yes, multiple PCA9544APW/G-T devices can be cascaded to expand the number of channels for I2C and SMBus communication.

  9. Does PCA9544APW/G-T have built-in ESD protection?
    Yes, PCA9544APW/G-T has built-in ESD protection, making it robust against electrostatic discharge events.

  10. What are the typical applications of PCA9544APW/G-T?
    Typical applications of PCA9544APW/G-T include industrial automation, consumer electronics, and communication equipment.