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Name: PCA9544APWE4
Brand: Texas Instruments
SKU: PCA9544APWE4
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 PCA9544APWE4

Part No.:: PCA9544APWE4

Manufacturer:: Texas Instruments

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

Datasheet:: PCA9544APWE4.pdf

Description:: IC INTERFACE SPECIALIZED 20TSSOP

In Stock:: 2385

Quantity:: Add To Cart

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PCA9544APWE4 Specifications

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

PCA9544APWE4 this integrated circuit is available in factory sealed anti static packs. at icwhale.com. Please read product page below detail information. including PCA9544APWE4 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 PCA9544APWE4 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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PCA9544APWE4 information

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PCA9544APWE4 Typical application Circuitry

PCA9544APWE4

The PCA9544APWE4 is a 4-channel I2C-bus and SMBus multiplexer with interrupt logic. It enables a single I2C master to communicate with multiple I2C devices that have the same address by providing channel selection through an I2C-bus interface.

PCA9544APWE4 Application Scenarios:

1. I2C Bus Expansion in Complex Systems: Used in complex embedded systems, multi-sensor applications, or server motherboards where multiple I2C devices with the same address need to be managed by a single I2C master.

2. Managing Multiple I2C Devices: Ideal for scenarios that require interfacing multiple I2C devices like sensors, EEPROMs, or other I2C-based peripherals within a single system.

PCA9544APWE4 Key Features and Parameters:

1. 4-Channel Multiplexer: Provides four separate I2C-bus channels for effective device communication.

2. I2C-Bus Interface: Fully compatible with I2C-bus and SMBus standards, facilitating seamless integration.

3. Interrupt Logic: Supports interrupt logic, allowing for efficient communication and response handling.

4. Wide Voltage Range: Typically operates within a voltage range of 2.3V to 5.5V, suitable for various logic levels.

5. Low Power Consumption: Designed to be energy-efficient, which is crucial for battery-powered and embedded applications.

Circuit Connection Example: Multi-Sensor System

Overview: Using PCA9544APWE4 in a multi-sensor system to interface multiple I2C sensors with the same address to a single I2C master.

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

2. Grounding the Multiplexer: GND (pin 8) needs to be connected 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 for 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 PCA9544APWE4, 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 the connected sensors.

2. Channel Address Configuration: Set A0, A1, and A2 correctly to avoid address conflicts and ensure proper channel selection.

3. Bus Capacitance Consideration: Keep the total bus capacitance within the limits specified for I2C.

4. Effective Interrupt Handling: Utilize the INT pin effectively for managing interrupts from the sensors.

5. Power Efficiency: Consider the low power consumption design for energy-efficient operation, especially in battery-powered systems.

In conclusion, the PCA9544APWE4 is a versatile and efficient solution for managing multiple I2C devices with identical addresses in a single system. Its 4-channel multiplexing capability, compatibility with I2C standards, and interrupt handling features make it a valuable component in complex I2C-bus systems, especially in multi-sensor applications.

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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.

(2)We are informed of the defect described above within 90 days after the delivery of PCA9544APWE4.

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