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PCA9545ARGYR
+BOMIC INTERFACE SPECIALIZED 20VQFN
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ManufacturerTexas Instruments
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Mfr. Part #PCA9545ARGYR
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Datasheet PCA9545ARGYR DataSheet
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Package VQFN (RGY)-20
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In Stock5425
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Specifications
| Attribute | Value |
| Package | Tape & Reel (TR),Cut Tape (CT),Bulk |
| ProductStatus | Active |
| Applications | Translating Switch |
| Interface | I²C, SMBus |
| Voltage-Supply | 2.3V ~ 5.5V |
| Package/Case | 20-VFQFN Exposed Pad |
| SupplierDevicePackage | 20-VQFN (3.5x4.5) |
Overview
Description
Key features include interrupt outputs, which inform the master of the need to address a particular slave, and individual channel selection through the I²C bus, allowing for flexible communication. With its low on-resistance switches, the PCA9545ARGYR ensures minimal signal distortion. It operates in a voltage range of 2.3V to 5.5V, making it suitable for a variety of system voltages. The device also supports hot-swapping and can be used in applications such as server management, industrial control, and consumer electronics to improve system scalability and reliability. Its small TSSOP package is suitable for compact designs.
Equivalent
1. TCA9545A by Texas Instruments – a similar 4-channel I2C switch.
2. PI4MSD5V9545A by Diodes Incorporated – another 4-channel I2C switch.
3. PCA9546A by NXP – offers similar functionality with 4 channels.
These alternatives provide similar functionality and can be used in comparable applications where I2C bus switching is required.
Features
1. Four-Channel Multiplexer: It allows one upstream I2C-bus master to communicate with multiple downstream I2C devices or buses.
2. Interrupt Logic: This feature is used for efficient handling of interrupt signals across multiple channels.
3. I2C-Bus Compatible: It supports both the I2C and SMBus protocols, making it suitable for a wide range of applications.
4. Individual Channel Control: Each channel can be individually enabled or disabled, providing flexibility in device communication.
5. Wide Voltage Range: Operates typically from 2.3V to 5.5V, supporting various power supply systems.
6. Low Standby Current: Economical in power consumption, important for battery-operated devices.
7. ESD Protection: Provides Electrostatic Discharge protection, enhancing reliability.
8. Compact Package: Available in small TSSOP and QFN packages, ideal for space-constrained applications.
These features make the PCA9545ARGYR suitable for complex I2C-bus configurations and applications that require multiple device connections and efficient interrupt management.
Pinout
Key functions and pin configuration include:
- VCC (Power Supply): Powers the chip.
- GND (Ground): Common ground connection.
- SDA/SCL (I2C Data and Clock Lines): For I2C communication.
- INT (Interrupt): Used for interrupt signals.
- RESET: Resets the I2C switch.
- Channel Control: Controls which I2C channels are active.
- I2C Channels (SDx/SCx): Four pairs of SDA and SCL lines (SD0-SD3/SC0-SC3) for the different I2C channels.
This device enables communication between a master device and multiple slave devices, allowing for efficient management of I2C traffic across different segments or devices.
Manufacturer
Application
1. Multimedia Devices: Facilitates communication between processors and peripheral components.
2. Telecommunications: Manages multiple sensors and controllers in network infrastructure.
3. Computing Systems: Supports system management buses in servers and personal computers.
4. Consumer Electronics: Enables control of various components in smart devices.
5. Industrial Automation: Allows for the integration of various sensors and actuators in control systems.
These applications benefit from its ability to isolate and manage different I2C devices efficiently.