PCA9543APW,112

Product Overview

• Category: Integrated Circuit
• Use: Multiplexer and Demultiplexer IC
• Characteristics: I2C-bus controlled 2-channel multiplexer/demultiplexer with interrupt logic
• Package: TSSOP16
• Essence: The PCA9543APW,112 is a versatile multiplexer/demultiplexer IC that allows multiple devices to share a single I2C bus.
• Packaging/Quantity: Available in tape and reel packaging, with 2500 units per reel.

Specifications

• Supply Voltage Range: 2.3V to 5.5V
• Low Standby Current: 1µA (typical)
• High-Speed I2C Interface: Up to 400kHz
• Two Bidirectional Channels
• Interrupt Output for Channel Status
• Address Selection Inputs
• Power-Up With All Switch Channels Deselected
• ESD Protection Exceeds JESD 22

Pin Configuration

The PCA9543APW,112 has a total of 16 pins arranged as follows:

```

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| | | 1 16| | | | 2 15| | | | 3 14| | | | 4 13| | | | 5 12| | | | 6 11| | | | 7 10| | | | 8 9| |___________| ```

Functional Features

• Allows multiple devices to be connected to a single I2C bus
• Enables communication with individual devices by selecting the desired channel
• Supports interrupt output for channel status monitoring
• Provides address selection inputs for customization
• Low standby current ensures power efficiency
• High-speed I2C interface allows for fast data transfer

Advantages and Disadvantages

Advantages: - Simplifies I2C bus design by reducing the number of required bus lines - Enables efficient utilization of limited I2C addresses - Provides flexibility in connecting multiple devices to a single bus

Disadvantages: - Limited to two bidirectional channels, which may not be sufficient for complex systems with numerous devices - Requires careful consideration of address selection to avoid conflicts

Working Principles

The PCA9543APW,112 operates by selectively connecting one of the two bidirectional channels to the I2C bus. This is achieved through the control inputs that determine the desired channel. The selected channel then becomes the active path for communication between the master device and the connected slave device.

Detailed Application Field Plans

The PCA9543APW,112 finds applications in various fields where multiple devices need to communicate over a single I2C bus. Some potential application areas include:

1. Industrial Automation: Controlling multiple sensors, actuators, and modules using a single I2C bus.
2. Automotive Electronics: Managing communication between different electronic control units (ECUs) in vehicles.
3. Consumer Electronics: Enabling connectivity between various peripherals, such as displays, touchscreens, and sensors.
4. Internet of Things (IoT): Facilitating communication between multiple IoT devices in smart home or industrial settings.

Detailed and Complete Alternative Models

1. PCA9544APW,112: 4-channel multiplexer/demultiplexer IC with interrupt logic.
2. PCA9545APW,112: 4-channel I2C-bus multiplexer/demultiplexer with reset.
3. PCA9546APW,112: 4-channel I2C-bus multiplexer/demultiplexer with reset and enable.

These alternative models offer additional channels and features, providing more flexibility for different application requirements.

In conclusion, the PCA9543APW,112 is a versatile multiplexer/demultiplexer IC that simplifies I2C bus design by allowing multiple devices to share a single bus. Its high-speed interface, interrupt logic, and address selection inputs make it suitable for various applications in industrial automation, automotive electronics, consumer electronics, and IoT. While it has limitations in terms of the number of channels, there are alternative models available with more channels and additional features.