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Name: PCA9545APW
Brand: Texas Instruments
SKU: PCA9545APW
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Any Feature, including a modified Existing Feature, that is not an Existing Feature.

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Texas Instruments PCA9545APW

Part No.:: PCA9545APW

Manufacturer:: Texas Instruments

Package:: 20-TSSOP (0.173, 4.40mm Width)

Datasheet:: PCA9545APW.pdf

Description:: IC INTERFACE SPECIALIZED 20TSSOP

In Stock:: 22044

Quantity:: Add To Cart

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PCA9545APW Specifications

Package/Case:
20-TSSOP (0.173, 4.40mm Width)
Packaging:
Bulk,Tube
Series:
-
ProductStatus:
Obsolete
Applications:
Translating Switch
Interface:
I²C, SMBus
Voltage-Supply:
2.3V ~ 5.5V

PCA9545APW this integrated circuit is available in factory sealed anti static packs. at icwhale.com. Please read product page below detail information. including PCA9545APW price, data-sheet, in-stock availability, technical difficulties. Also. Quickly Enter the access of compare listing to find out replaceable electronic parts. If you want to retrieve comprehensive data for PCA9545APW to optimize the supply chain (including cross references, life-cycle, parametric, counterfeit risk, obsolescence managements forecasts), please contact to our Tech-supports team.

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PCA9545APW information

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PCA9545APW Typical application Circuitry

PCA9545APW

The PCA9545APW is a 4-channel I2C-bus multiplexer, part of the PCA series produced by Texas Instruments. This multiplexer is designed to provide 4 separate I2C-bus channels from a single I2C-bus input, making it an essential component in applications requiring multiple I2C devices with the same address to be connected to a single I2C bus. It is commonly used in complex systems like server motherboards, networking equipment, and multi-zone control systems, where multiple I2C devices need to be managed effectively.

1. Power Supply and Voltage Considerations: The PCA9545APW operates with a power supply ranging from 2.3V to 5.5V, accommodating various logic level requirements. This range allows it to be easily integrated into systems with different operating voltages. The VDD pin connects to the positive power supply, and a ground connection is established through the GND pin. To maintain stable operation, it is advised to place decoupling capacitors near the power pins to filter out noise and stabilize the voltage supply.

2. Pin Configuration and Connection Method: The PCA9545APW features several critical pins for its operation. The key pins include the SDA and SCL pins for the main I2C bus connection, four pairs of SDAx and SCLx pins for the four I2C bus channels, and three address pins (A0, A1, A2) for setting the I2C address of the multiplexer. The interrupt pin (INT) signals the main controller when an interrupt is generated on any of the downstream I2C channels. Correctly configuring and connecting these pins is crucial for the effective functioning of the multiplexer in any I2C-based system.

3. Integration into I2C Systems: The PCA9545APW is primarily integrated into systems to manage multiple I2C devices. It acts as an intermediary, allowing a single I2C master to communicate with multiple I2C slave devices that may have identical addresses. Proper setup involves programming the main controller to select the active channel on the multiplexer before communicating with the connected I2C device on that channel.

4. Performance and Application Versatility: The PCA9545APW is notable for its ability to facilitate complex I2C communications without signal degradation. It enables seamless and efficient management of multiple I2C devices, ensuring robust performance in various applications. The flexibility in addressing and channel selection makes the PCA9545APW adaptable to a wide range of use cases in complex electronic systems.

5. Circuit Design and PCB Layout Recommendations: In designing circuits for the PCA9545APW, special attention should be given to trace routing for the I2C bus lines to minimize interference and signal loss. Ensuring short and direct traces for the SDA and SCL lines, both for the main bus and the individual channels, is vital. A well-planned PCB layout contributes significantly to the reliability and efficiency of the I2C multiplexer in operation.

6. Compliance with Industry Standards: The PCA9545APW is manufactured in compliance with industry standards, ensuring its suitability and reliability for use in various I2C-based applications. It adheres to the I2C-bus specification, ensuring compatibility with a wide range of I2C devices.

7. Handling and Installation Protocols: The PCA9545APW, being a precision electronic component, requires careful handling to prevent damage from electrostatic discharge (ESD). Employing ESD protection during handling and installation is crucial to maintain the integrity and functionality of the device.

In summary, the PCA9545APW is a highly efficient 4-channel I2C-bus multiplexer, vital for managing multiple I2C devices in complex systems. Effective usage involves appropriate power supply management, accurate pin configuration and connections, strategic integration into I2C systems, capitalizing on its versatile performance, careful circuit design, adherence to industry standards, and cautious handling and installation. These practices ensure the PCA9545APW operates effectively, facilitating robust and flexible I2C communication in various applications.

PCA9545APW FAQ

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6. What is the process for return or replacement of PCA9545APW?

All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the PCA9545APW we delivered, we will accept the replacement or return of the PCA9545APW only when all of the below conditions are fulfilled:

(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.

(2)We are informed of the defect described above within 90 days after the delivery of PCA9545APW.

(3)The PartNo is unused and only in the original unpacked packaging.

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(1)Inform us within 90 days

(2)Obtain Requesting Return Authorizations