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Name: PCA9554PWG4
Brand: Texas Instruments
SKU: PCA9554PWG4
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 PCA9554PWG4

Part No.:: PCA9554PWG4

Manufacturer:: Texas Instruments

Package:: 16-TSSOP (0.173, 4.40mm Width)

Datasheet:: PCA9554PWG4.pdf

Description:: IC I/O EXPANDER I2C 8B 16TSSOP

In Stock:: 3600

Quantity:: Add To Cart

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PCA9554PWG4 Specifications

Package/Case:
16-TSSOP (0.173, 4.40mm Width)
Packaging:
Tube
Series:
-
ProductStatus:
Obsolete
NumberofI/O:
8
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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PCA9554PWG4 information

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PCA9554PWG4 Typical application Circuitry

PCA9554PWG4

The PCA9554PWG4 is an 8-bit I/O expander with an I2C-bus interface, designed to provide additional I/O ports to an I2C-bus, allowing a microcontroller to interface with more devices or peripherals.

PCA9554PWG4 Application Scenarios:

1. I/O Port Expansion: Commonly used in microcontroller-based systems that need additional I/O ports, such as in embedded systems, industrial controls, and home automation systems.

2. Interface with Multiple Devices: Ideal for systems requiring the interfacing of multiple sensors, LEDs, or other peripherals that necessitate I/O ports.

PCA9554PWG4 Key Features and Parameters:

1. 8-Bit I/O Expander: Provides 8 additional I/O ports for a microcontroller.

2. I2C-Bus Interface: Compatible with the I2C-bus standard for communication.

3. Wide Operating Voltage Range: Typically operates within a 2.3V to 5.5V range.

4. Low Standby Current: Features an energy-efficient design with a low standby current.

5. Configurable Ports: Ports can be configured as inputs or outputs, enhancing flexibility.

Circuit Connection Example: Home Automation System

Overview: Utilizing PCA9554PWG4 in a home automation system for controlling lighting and sensors.

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 Expander:

- GND (pin 8) must be connected to the system's ground.

3. I2C Bus Connection:

- SDA (pin 15) and SCL (pin 14) should be connected to the SDA and SCL lines of the microcontroller's I2C bus.

4. Connecting Devices to I/O Ports:

- P0 to P7 (pins 1-7 and pin 9) for connecting devices like sensors and relays. Each pin interfaces with a device that requires an I/O port.

5. Address Selection via Pins:

- A0, A1, and A2 (pins 10, 11, and 12, respectively) are used for hardware addressing, setting the I2C address of the PCA9554PWG4.

Design Considerations:

1. Voltage Level Compatibility: Ensure VCC matches the logic levels of the microcontroller and connected devices.

2. I2C Bus Integrity: Add pull-up resistors on the SDA and SCL lines for optimal I2C bus operation.

3. Address Configuration: Set A0, A1, and A2 correctly to avoid address conflicts on the I2C bus.

4. I/O Port Configuration: Appropriately configure the ports as inputs or outputs, based on the connected devices.

5. Device Compatibility: Verify the connected devices' compatibility with the voltage levels and current capabilities of the PCA9554PWG4.

In summary, the PCA9554PWG4 is a versatile I/O expander that significantly enhances the I/O capabilities of microcontroller-based systems. Its 8-bit expansion, I2C-bus compatibility, configurable ports, and energy-efficient design make it highly suitable for applications like home automation systems.

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6. What is the process for return or replacement of PCA9554PWG4?

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 PCA9554PWG4 we delivered, we will accept the replacement or return of the PCA9554PWG4 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 PCA9554PWG4.

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

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(1)Inform us within 90 days

(2)Obtain Requesting Return Authorizations