PCA9545ARGYR

Switch ICs - Various 4-Ch I2C & SMBus Multiplexer
3,681 有效庫存

PCA9545ARGYR

有效庫存3,681

Switch ICs - Various 4-Ch I2C & SMBus Multiplexer

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PCA9545ARGYR 數據表
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詳細說明

In conclusion, the PCA9545A offers a robust and efficient solution for I2C bus management, with features that promote ease of use, reliability, and compatibility across various voltage levels. Its versatile design and advanced functionality make it a valuable asset in complex electronic systems requiring precise and flexible communication pathways

主要特徵

  • High-speed USB 2.0 interface
  • Two UART channels for serial data transfer
  • Configurable DMA capabilities

規格

以下是所選零件的基本參數，涉及零件的特性及其所屬類別。

Addresses 4 Supply voltage (max) (V) 5.5
Supply voltage (min) (V) 2.3 Features Interrupt pin, Reset pin
Rating Catalog Frequency (max) (MHz) 0.4
Operating temperature range (°C) -40 to 85 Number of channels 4

數據表 PDF

數據表記錄了器件的特性、絕對最大額定值、應用等，這對於作為器件特定應用的整體指南大有裨益。

初步規格 PCA9545ARGYR PDF 下載

常見問題解答

What is PCA9545ARGYR?

The PCA9545ARGYR is a low-voltage 4-channel I2C-bus multiplexer from NXP Semiconductors. It allows a master to communicate with multiple I2C slave devices by enabling the selection of one of the four channels at a time. This multiplexer is commonly used in applications where multiple I2C devices need to be accessed using a single I2C bus.

How Does PCA9545ARGYR Work?

The PCA9545ARGYR works by using a control logic to select the desired channel among the four available channels. When a specific channel is selected, the corresponding I2C signals are routed to that channel, allowing communication between the master and the selected slave device. This enables the master to address and communicate with different I2C devices sequentially over a single bus.

How Many Pins does PCA9545ARGYR have and What are the Functions of the Pinout Configuration?

The PCA9545ARGYR is housed in a 20-pin QFN (Quad Flat No-leads) package. The pinout configuration includes:

  • VCC: Power supply pin.
  • GND: Ground pin.
  • SCL: I2C clock signal input/output.
  • SDA: I2C data signal input/output.
  • ADDR0, ADDR1: Address selection pins for configuring the I2C address.
  • EN: Enable pin to activate the multiplexer.
  • CHANx: Channel selection pins to choose the active channel.

What are the Pros and Cons of PCA9545ARGYR?

Pros:

  • Flexible Channel Selection: Allows communication with multiple I2C devices through channel selection.
  • Space-Saving: Integrates multiple channels in a single device, saving board space.
  • Address Selection: Offers address pins for configuring multiple PCA9545ARGYR devices on the same bus.
  • Hot Swap Capability: Supports hot swapping of I2C devices without interrupting communication.
  • Low Standby Current: Consumes low power in standby mode, suitable for power-sensitive applications.

Cons:

  • Complexity: Requires careful management and understanding of channel selection and addressing.
  • Propagation Delay: Introduces a slight delay in signal propagation due to channel switching.
  • External Pull-Up Resistors: May require external pull-up resistors for proper I2C communication.

Are There Any Equivalents/Alternatives to PCA9545ARGYR for Recommendation?

  • The TCA9544A from Texas Instruments is a similar I2C-bus multiplexer with 4 channels.
  • Alternatives to the PCA9545ARGYR include the LTC4316 from Analog Devices and the MAX7360 from Maxim Integrated.

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