PCA9548APW,118

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Multiplexer and demultiplexer for I2C-bus applications
• Characteristics:
  • Allows multiple devices to share a single I2C bus
  • Provides bidirectional voltage-level translation between different I2C buses
  • Supports hot insertion
• Package: TSSOP (Thin Shrink Small Outline Package)
• Essence: Enables efficient communication and control of multiple I2C devices using a single bus.
• Packaging/Quantity: Comes in reels with 2500 units per reel.

Specifications

• Supply Voltage Range: 2.3V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• I2C Bus Frequency: Up to 400 kHz
• Number of Channels: 8
• Input/Output Logic Level: 1.8V to 5.5V
• Standby Current: 10 µA (typical)

Detailed Pin Configuration

The PCA9548APW,118 has a total of 24 pins. Here is the pin configuration:

Pin 1: SDA0 Pin 2: SCL0 Pin 3: EN0 Pin 4: SDA1 Pin 5: SCL1 Pin 6: EN1 Pin 7: SDA2 Pin 8: SCL2 Pin 9: EN2 Pin 10: SDA3 Pin 11: SCL3 Pin 12: EN3 Pin 13: SDA4 Pin 14: SCL4 Pin 15: EN4 Pin 16: SDA5 Pin 17: SCL5 Pin 18: EN5 Pin 19: SDA6 Pin 20: SCL6 Pin 21: EN6 Pin 22: SDA7 Pin 23: SCL7 Pin 24: EN7

Functional Features

• Multiplexes up to 8 I2C buses into a single I2C bus
• Allows communication with multiple I2C devices using a single microcontroller
• Provides voltage-level translation between different I2C buses
• Supports hot insertion and removal of devices without disrupting the bus

Advantages and Disadvantages

Advantages: - Efficient utilization of I2C bus resources - Simplifies system design by reducing the number of required I2C interfaces - Enables communication with multiple I2C devices using a single microcontroller

Disadvantages: - Limited to I2C-bus applications only - Requires careful consideration of bus capacitance and pull-up resistor values for optimal performance

Working Principles

The PCA9548APW,118 is a multiplexer and demultiplexer IC designed specifically for I2C-bus applications. It allows multiple I2C devices to share a single I2C bus, effectively increasing the number of devices that can be controlled by a microcontroller.

The IC features 8 channels, each capable of connecting an individual I2C bus. By selecting the appropriate channel using the enable (EN) pins, the desired I2C bus can be connected to the common I2C bus. This enables communication with the devices connected to that particular I2C bus.

Additionally, the PCA9548APW,118 provides bidirectional voltage-level translation between different I2C buses. This ensures compatibility between devices operating at different voltage levels.

Detailed Application Field Plans

The PCA9548APW,118 finds applications in various fields where multiple I2C devices need to be controlled efficiently. Some potential application areas include: - Industrial automation - Consumer electronics - Automotive systems - Medical devices - Internet of Things (IoT) applications

Detailed and Complete Alternative Models

• PCA9547PW,118: 8-channel I2C multiplexer/demultiplexer with interrupt logic
• PCA9546APW,118: 4-channel I2C multiplexer/demultiplexer with reset logic
• PCA9545APW,118: 4-channel I2C multiplexer/demultiplexer with enable logic
• PCA9544APW,118: 4-channel I2C multiplexer/demultiplexer without enable logic

These alternative models offer similar functionality but may have different features or pin configurations to suit specific application requirements.

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