PCA9548ADBR

Product Overview

Category: Integrated Circuit (IC)

Use: The PCA9548ADBR is a multiplexer/demultiplexer IC that allows multiple devices to share a single communication bus. It provides a simple solution for expanding the number of I2C or SMBus ports available in a system.

Characteristics: - 8-channel multiplexer/demultiplexer - Compatible with I2C and SMBus protocols - Low on-resistance switches for minimal signal distortion - Wide operating voltage range: 2.3V to 5.5V - Low standby current consumption - Address pins for device selection - Power-on reset function

Package: SSOP-24

Essence: The PCA9548ADBR is an essential component for systems requiring multiple I2C or SMBus devices to communicate over a shared bus. It simplifies the design by reducing the number of required bus lines and enables efficient utilization of limited resources.

Packaging/Quantity: The PCA9548ADBR is typically sold in reels or tubes, containing 250 units per package.

Specifications

• Operating Voltage Range: 2.3V to 5.5V
• Supply Current: 0.9mA (typical)
• Standby Current: 1µA (typical)
• On-Resistance: 6Ω (maximum)
• I2C Bus Frequency: Up to 400kHz
• Package Type: SSOP-24

Pin Configuration

The PCA9548ADBR has a total of 24 pins arranged as follows:

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| | | 1 2 3 4 5 6 | | | | 7 8 9 10 11 12 | | | | 13 14 15 16 17 18 | | | | 19 20 21 22 23 24 | |_______________________________________| ```

Functional Features

• Multiplexes up to 8 I2C or SMBus channels onto a single bus
• Allows communication with multiple devices using a shared bus
• Address pins for device selection
• Power-on reset function ensures proper initialization
• Low on-resistance switches minimize signal distortion
• Wide operating voltage range allows compatibility with various systems
• Low standby current consumption for power efficiency

Advantages and Disadvantages

Advantages: - Simplifies system design by reducing the number of required bus lines - Enables efficient utilization of limited resources - Compatible with both I2C and SMBus protocols - Low on-resistance switches for minimal signal distortion - Power-on reset function ensures proper initialization

Disadvantages: - Limited to 8 channels, may not be suitable for systems requiring more than 8 devices

Working Principles

The PCA9548ADBR operates by multiplexing/demultiplexing I2C or SMBus signals from multiple devices onto a single bus. It uses address pins to select the desired channel and routes the corresponding signals to the bus. The low on-resistance switches ensure minimal signal distortion during transmission. The power-on reset function guarantees proper initialization of the device.

Detailed Application Field Plans

The PCA9548ADBR finds applications in various fields where multiple I2C or SMBus devices need to communicate over a shared bus. Some potential application areas include: - Industrial automation systems - Consumer electronics - Automotive electronics - Medical devices - Internet of Things (IoT) devices

Detailed and Complete Alternative Models

• PCA9547PW: 8-channel I2C multiplexer/demultiplexer in TSSOP-16 package
• PCA9546APW: 4-channel I2C multiplexer/demultiplexer in TSSOP-16 package
• PCA9545APW: 4-channel I2C multiplexer/demultiplexer with interrupt logic in TSSOP-16 package
• PCA9544APW: 4-channel I2C multiplexer/demultiplexer with reset logic in TSSOP-16 package
• PCA9543APW: 2-channel I2C multiplexer/demultiplexer in TSSOP-16 package

These alternative models provide different channel configurations and additional features to suit specific application requirements.

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