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Name: PCA9544APW,112
Brand: NXP USA Inc.
SKU: PCA9544APW,112
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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NXP USA Inc. PCA9544APW,112

Part No.:: PCA9544APW,112

Manufacturer:: NXP USA Inc.

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

Datasheet:: PCA9544APW,112.pdf

Description:: IC INTERFACE SPECIALIZED 20TSSOP

In Stock:: 22455

Quantity:: Add To Cart

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PCA9544APW,112 Specifications

Package/Case:
20-TSSOP (0.173, 4.40mm Width)
Packaging:
Tube,Tube
Series:
-
ProductStatus:
Obsolete
Applications:
Translating Switch
Interface:
I²C, SMBus
Voltage-Supply:
2.3V ~ 3.6V, 4.5V ~ 5.5V

PCA9544APW,112 this integrated circuit is available in factory sealed anti static packs. at icwhale.com. Please read product page below detail information. including PCA9544APW,112 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 PCA9544APW,112 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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PCA9544APW,112 information

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PCA9544APW,112 Typical application Circuitry

PCA9544APW,112

The PCA9544APW,112 is a 4-channel I2C-bus multiplexer with interrupt logic. This chip allows 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.

PCA9544APW,112 Application Scenarios:

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

2. Multiple I2C Device Management: Ideal for managing multiple I2C devices, like sensors or EEPROMs, within a single system without address conflicts.

PCA9544APW,112 Key Features and Parameters:

1. 4-Channel Multiplexer: Offers four distinct I2C-bus channels for selective device communication.

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

3. Interrupt Logic: Supports interrupt logic for efficient communication.

4. Wide Operating Voltage Range: Operates typically within a 2.3V to 5.5V range, accommodating different logic levels.

5. Low Standby Current: Energy-efficient design with a low standby current.

Circuit Connection Example: Managing Multiple I2C Sensors

Overview: Using PCA9544APW,112 in a system 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, typically within the 2.3V to 5.5V range.

2. Grounding the Chip: The system's ground must be connected to GND (pin 8).

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: A0, A1, and A2 (pins 13, 12, and 11, respectively) are used for hardware addressing of the PCA9544APW,112, determining which I2C channel is active.

6. Handling Interrupts: INT (pin 9) can be connected to an interrupt pin on the I2C master to manage sensor interrupt signals.

Design Considerations:

1. Voltage Compatibility: Ensure VCC is compatible with the logic levels of the I2C master and sensors.

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

3. Bus Capacitance Management: Keep the total bus capacitance within the limits of the I2C specification.

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

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

In conclusion, when an I2C master wants to communicate with several sensors or peripherals using the same address, the PCA9544APW,112 is a flexible and effective way to manage multiple I2C devices. Its capacity to handle interrupts, conform to I2C standards, and multiplex four channels make it a useful part of intricate I2C-bus systems.

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6. What is the process for return or replacement of PCA9544APW,112?

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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 PCA9544APW,112.

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

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