Overview
The PCA9545ARGYR is a 4-channel I²C and SMBus multiplexer manufactured by Texas Instruments. This component is designed to enable multiple I²C-bus masters to communicate with a single I²C-bus slave device, making it highly versatile for applications requiring multiple device connections on a single bus.
The device features bidirectional translating switches that allow communication between different bus voltages, such as 1.8V, 2.5V, 3.3V, and 5V, without the need for additional protection circuitry. The PCA9545ARGYR is packaged in a 20-pin VQFN (RGY) exposed pad package, which is surface mountable and measures 4.5mm x 3.5mm.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Manufacturer | Texas Instruments | |
| Part Number | PCA9545ARGYR | |
| Package Type | VQFN (RGY) | |
| Pin Count | 20 | |
| Operating Temperature Range | -40 to 85°C | |
| VCC (Supply Voltage) | 2.3V to 5.5V | V |
| Channel Width | 4 | |
| I2C Address | 1110 0xx | |
| Maximum Clock Frequency (fSCLK) | 0.4 MHz | Hz |
| Interrupt Output | Active-Low | |
| Reset Input | Active-Low | |
| I/O Tolerance | 5.5V | V |
Key Features
- Bidirectional Translating Switches: Allows communication between different bus voltages (1.8V, 2.5V, 3.3V, and 5V) without additional protection circuitry.
- I²C and SMBus Compatibility: Compatible with both I²C and SMBus standards, enabling versatile use in various applications.
- Four Active-Low Interrupt Inputs and One Active-Low Interrupt Output: Facilitates interrupt handling and notification to the master device.
- Active-Low Reset Input: Allows for easy reset of the device.
- Channel Selection via I²C-Bus: Enables the selection of one or multiple channels through the I²C-bus interface.
- 5.5V Tolerant I/O: Ensures compatibility with a wide range of devices by tolerating up to 5.5V on all I/O terminals.
Applications
The PCA9545ARGYR is commonly used in applications where multiple I²C devices need to be controlled by a single I²C bus master. These include:
- Networking Equipment: Enables the connection of multiple devices on a single bus, enhancing communication efficiency.
- Industrial Control Systems: Facilitates the control and monitoring of multiple sensors and devices in industrial settings.
- Sensor Networks: Allows for the integration of multiple sensors on a single I²C bus, simplifying system design and operation.
Q & A
- Q: What is the PCA9545ARGYR, and what is its primary function?
A: The PCA9545ARGYR is a 4-channel I²C and SMBus multiplexer that allows multiple I²C-bus masters to communicate with a single I²C-bus slave device, enabling the selection of one or multiple channels via the I²C-bus interface.
- Q: What package type and pin count does the PCA9545ARGYR have?
A: The PCA9545ARGYR is packaged in a 20-pin VQFN (RGY) exposed pad package.
- Q: What is the operating temperature range of the PCA9545ARGYR?
A: The operating temperature range of the PCA9545ARGYR is -40°C to 85°C.
- Q: What is the supply voltage range for the PCA9545ARGYR?
A: The supply voltage range for the PCA9545ARGYR is 2.3V to 5.5V.
- Q: How many channels does the PCA9545ARGYR support?
A: The PCA9545ARGYR supports four channels.
- Q: What is the maximum clock frequency supported by the PCA9545ARGYR?
A: The maximum clock frequency supported by the PCA9545ARGYR is 0.4 MHz.
- Q: Does the PCA9545ARGYR have interrupt capabilities?
A: Yes, the PCA9545ARGYR has four active-low interrupt inputs and one active-low interrupt output.
- Q: Is the PCA9545ARGYR RoHS compliant?
A: Yes, the PCA9545ARGYR is RoHS compliant.
- Q: What are some common applications of the PCA9545ARGYR?
A: Common applications include networking equipment, industrial control systems, and sensor networks.
- Q: How can I find detailed information about the PCA9545ARGYR, such as application notes and datasheets?
A: Detailed information, including datasheets and application notes, can be found on the Texas Instruments website or through authorized distributors like Ovaga and Lantron Electronic.
- Q: What is the warranty period for the PCA9545ARGYR purchased from Ovaga?
A: Ovaga offers a 1-year warranty on the PCA9545ARGYR, covering defects in materials and workmanship under normal use.
