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Name: PCA9544APWRG4
Brand: Texas Instruments
SKU: PCA9544APWRG4
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 PCA9544APWRG4

Part No.:: PCA9544APWRG4

Manufacturer:: Texas Instruments

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

Datasheet:: PCA9544APWRG4.pdf

Description:: IC INTERFACE SPECIALIZED 20TSSOP

In Stock:: 2754

Quantity:: Add To Cart

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PCA9544APWRG4 Specifications

Package/Case:
20-TSSOP (0.173, 4.40mm Width)
Packaging:
Tape & Reel (TR)
Series:
-
ProductStatus:
Discontinued at Mosen
Applications:
Translating Switch
Interface:
I²C, SMBus
Voltage-Supply:
2.3V ~ 5.5V

PCA9544APWRG4 this integrated circuit is available in factory sealed anti static packs. at icwhale.com. Please read product page below detail information. including PCA9544APWRG4 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 PCA9544APWRG4 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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PCA9544APWRG4 information

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PCA9544APWRG4 Typical application Circuitry

PCA9544APWRG4

The PCA9544APWRG4 is a 4-channel I2C-bus multiplexer with interrupt logic. It is designed to enable a single I2C master to interface with multiple I2C devices (slaves) that have the same address, by providing selective channel access through an I2C-bus interface.

PCA9544APWRG4 Application Scenarios:

1. I2C Bus System Expansion: Widely used in systems that require communication with multiple I2C devices having identical addresses, such as in complex embedded systems, multi-sensor applications, or server motherboards.

2. Multiple I2C Device Management: Ideal for situations where multiple I2C devices, like sensors or EEPROMs, need to be managed within a single system without address conflicts.

PCA9544APWRG4 Key Features and Parameters:

1. 4-Channel Multiplexer: Offers four distinct I2C-bus channels for multiplexing.

2. I2C-Bus Interface: Compatible with the I2C-bus, allowing easy integration into I2C systems.

3. Interrupt Logic: Supports interrupt logic for efficient I2C-bus communication.

4. Wide Operating Voltage Range: Typically operates within a 2.3V to 5.5V range, accommodating various logic levels.

5. Low Standby Current: Designed for energy efficiency with a low standby current.

Circuit Connection Example: Managing Multiple I2C Sensors

Overview: Implementing PCA9544APWRG4 to interface a single I2C master with multiple I2C sensors having the same address.

1. Power Supply Connection: VCC (pin 16) should be connected to the system's power supply, within the 2.3V to 5.5V range.

2. Grounding the Multiplexer: GND (pin 8) needs to be linked to the system's ground.

3. I2C Master Connection: SDA (pin 15) and SCL (pin 14) are to be connected to the SDA and SCL lines of the I2C master.

4. Connecting I2C Sensors: SD0 to SD3 (pins 1-4) and SC0 to SC3 (pins 5-8) correspond to the SDA and SCL lines of each of the four sensor channels.

5. Channel Selection via Addressing: A0, A1, and A2 (pins 13, 12, and 11, respectively) are used for hardware addressing of the PCA9544APWRG4, determining which I2C channel is active.

6. Managing Sensor Interrupts: INT (pin 9) can be connected to an interrupt pin on the I2C master to manage interrupt signals from the sensors.

Design Considerations:

1. Voltage Level Compatibility: Ensure that VCC matches the logic levels of the I2C master and sensors.

2. Channel Address Configuration: Properly set A0, A1, and A2 to avoid conflicts and ensure correct channel selection.

3. I2C Bus Capacitance: Be mindful of the total bus capacitance, keeping it within I2C specifications.

4. Effective Interrupt Handling: Utilize the INT pin for efficient management of interrupts from the sensors.

5. Power Efficiency: Leverage the low standby current feature for energy-efficient operation.

In conclusion, the PCA9544APWRG4 is a versatile and efficient solution for managing multiple I2C devices in scenarios where a single I2C master needs to communicate with multiple sensors or peripherals having the same address. Its 4-channel multiplexing capability, I2C compatibility, and interrupt handling features make it a valuable component in complex I2C-bus systems.

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

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