What is the Additional Feature ?

Name: PCA9673PW,112
Brand: NXP USA Inc.
SKU: PCA9673PW,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. PCA9673PW,112

Part No.:: PCA9673PW,112

Manufacturer:: NXP USA Inc.

Package:: 24-TSSOP (0.173, 4.40mm Width)

Datasheet:: PCA9673PW,112.pdf

Description:: IC I/O EXPANDER I2C 16B 24TSSOP

In Stock:: 3264

Quantity:: Add To Cart

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PCA9673PW,112 Specifications

Package/Case:
24-TSSOP (0.173, 4.40mm Width)
Packaging:
Tube
Series:
-
ProductStatus:
Obsolete
NumberofI/O:
16
Interface:
I²C
InterruptOutput:
Yes
Features:
POR
OutputType:
Push-Pull
Current-OutputSource/Sink:
100µA, 25mA
ClockFrequency:
1 MHz
Voltage-Supply:
2.3V ~ 5.5V
OperatingTemperature:
-40°C ~ 85°C
MountingType:
Surface Mount

PCA9673PW,112 this integrated circuit is available in factory sealed anti static packs. at icwhale.com. Please read product page below detail information. including PCA9673PW,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 PCA9673PW,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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PCA9673PW,112 information

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PCA9673PW,112 Typical application Circuitry

PCA9673PW,112

The PCA9673PW,112 is a 16-bit I/O expander with an I²C-bus interface, designed to provide additional GPIO (General-Purpose Input/Output) ports for microcontroller-based systems. This chip is particularly useful in applications where the number of available GPIO pins on the main controller is insufficient, such as in embedded systems, smart home devices, industrial controls, and automation systems.

Key Parameters and Features:

- 16-Bit I/O Expansion: Offers 16 additional input/output ports, significantly increasing the available GPIOs for complex applications.

- I²C Interface: Facilitates easy communication with a wide range of microcontrollers, allowing for the control and configuration of the expanded I/Os through a simple two-wire interface.

- Configurable Polarity: Inputs can have their polarity inverted, enhancing flexibility in interfacing with different external devices.

- Low Standby Current: Minimizes power consumption in standby mode, making it suitable for battery-powered and energy-sensitive applications.

- Built-in oscillator: This makes circuit design simpler by doing away with the requirement for an external clock source.

Application Scenario - Smart Home Control System:

In a smart home control system, the PCA9673PW,112 can be utilized to interface with a multitude of sensors, switches, and actuators, providing the necessary I/O ports when the primary microcontroller lacks sufficient GPIOs.

1. Power Supply Connection: Begin by connecting the VDD pin to a 3.3V or 5V power source, depending on the logic level compatibility of the microcontroller and other devices in the system. For the PCA9673PW,112 to operate dependably, a steady and clean power source is essential.

2. Ground Connection: Connect the GND pin to the system's ground.This common ground is vital for signal integrity and the proper functioning of both the I²C interface and the I/O ports.

3. Configure I²C Communication: Attach the SDA (Serial Data) and SCL (Serial Clock) pins to the appropriate microcontroller I²C bus lines. This connection is key to configuring and controlling the I/O ports of the PCA9673PW,112 through the microcontroller.

4. I/O Port Configuration: Connect sensors, switches, or actuators to the I/O ports (P0 to P15) of the PCA9673PW,112. Configuring these ports as either inputs or outputs depends on the specific needs of the application, such as reading sensor data or controlling actuators. Pull-up or pull-down resistors may be necessary on input ports to ensure defined logic levels when switches are open.

5. Address Configuration: Set the hardware address of the PCA9673PW,112 by connecting the A0, A1, and A2 pins to either VDD or GND, enabling multiple devices to be connected on the same I²C bus. This feature allows for a scalable system design, accommodating a large number of inputs and outputs.

6. Circuit Design Considerations: When designing the circuit, consider the electrical characteristics of the devices connected to the I/O ports, ensuring that current ratings and voltage levels do not exceed those supported by the PCA9673PW,112. Additionally, careful routing of I²C lines and placing of decoupling capacitors close to the VDD pin are essential to minimize noise and ensure stable operation. Lastly, consider the implications of cable length and capacitance on the I²C bus performance, especially in larger installations.

Utilizing the PCA9673PW,112 in a smart home control system effectively expands the microcontroller's I/O capabilities, enabling more sophisticated and feature-rich applications. By carefully managing power supply connections, grounding, I²C communication, and I/O port configurations, and addressing design challenges such as electrical compatibility, noise minimization, and bus performance, designers can leverage the PCA9673PW,112 to create advanced, reliable smart home solutions.

PCA9673PW,112 FAQ

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6. What is the process for return or replacement of PCA9673PW,112?

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 PCA9673PW,112 we delivered, we will accept the replacement or return of the PCA9673PW,112 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 PCA9673PW,112.

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

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(1)Inform us within 90 days

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