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Name: PCA9555PWR
Brand: Texas Instruments
SKU: PCA9555PWR
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 PCA9555PWR

Part No.:: PCA9555PWR

Manufacturer:: Texas Instruments

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

Datasheet:: PCA9555PWR.pdf

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

In Stock:: 2356

Quantity:: Add To Cart

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PCA9555PWR Specifications

Package/Case:
24-TSSOP (0.173, 4.40mm Width)
Packaging:
Tape & Reel (TR),Cut Tape (CT),Digi-Reel®,Bulk
Series:
-
ProductStatus:
Not For New Designs
NumberofI/O:
16
Interface:
I²C, SMBus
InterruptOutput:
Yes
Features:
POR
OutputType:
Push-Pull
Current-OutputSource/Sink:
10mA, 25mA
ClockFrequency:
400 kHz
Voltage-Supply:
2.3V ~ 5.5V
OperatingTemperature:
-40°C ~ 85°C
MountingType:
Surface Mount

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PCA9555PWR information

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PCA9555PWR Typical application Circuitry

PCA9555PWR

The PCA9555PWR is a 16-bit I2C-bus and SMBus I/O expander. It is primarily used to augment the number of Input/Output (I/O) ports in a system, especially in microcontroller-based applications where additional I/O ports are required.

PCA9555PWR Application Scenarios:

1. Embedded System Expansion: Frequently used in embedded systems to increase the I/O capabilities of microcontrollers.

2. Industrial Automation: Suitable for industrial control systems requiring additional I/O ports for sensors and actuators.

PCA9555PWR Key Features and Parameters:

1. 16-Bit I/O Expansion: Offers an increase in I/O ports with 16 additional ports.

2. I2C/SMBus Interface: Compatible with I2C and SMBus communication protocols.

3. Individual Port Configuration: This feature enables the independent setting of an input or output for each port.

4. Low Power Consumption: Made for procedures that use less energy.

5. Versatile Voltage Range: Operates across various system voltages.

Circuit Connection Example: Smart Home Automation

Overview: Utilizing PCA9555PWR in a smart home system for controlling various devices like lights and sensors.

1. Power Supply Integration:

- VCC (pin 24) should be connected to the smart home system's power supply, adhering to the chip's operating voltage specifications.

2. I2C Bus Connectivity:

- SDA (pin 23) and SCL (pin 22) must be connected to the respective SDA and SCL lines of the smart home system's I2C bus.

3. Peripheral Device Connection:

- I/O Ports (P00 to P07 and P10 to P17) for interfacing with devices such as light switches and sensors. Each port's configuration should be tailored to the connected device's functionality.

4. I2C Address Configuration:

- Address Pins (A0, A1, and A2) are essential for setting the I2C address of PCA9555PWR, ensuring correct device communication on the bus.

Design Considerations:

1. Voltage Compatibility: Ensure that VCC matches the power levels of the smart home system and the connected devices.

2. I2C Bus Addressing: To prevent conflicts on the I2C bus, precisely set the address pins.

3. Port Configuration: Set up each port as an output or input according on what the attached peripherals require.

4. System Integration and Testing: Ensure seamless integration of PCA9555PWR into the smart home system, including comprehensive testing for connectivity and function.

In conclusion, the PCA9555PWR is an effective I/O expander for applications requiring additional I/O ports, such as smart home automation systems. Its 16-bit I/O expansion, compatibility with I2C/SMBus, configurable ports, low power consumption, and adaptable voltage range make it a valuable component for expanding microcontroller capabilities. Key considerations in designing circuits include voltage compatibility, I2C bus configuration, port setup, and ensuring robust integration into the overall system.

PCA9555PWR FAQ

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6. What is the process for return or replacement of PCA9555PWR?

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 PCA9555PWR we delivered, we will accept the replacement or return of the PCA9555PWR 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 PCA9555PWR.

(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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