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Name: PCA9554PWR
Brand: Texas Instruments
SKU: PCA9554PWR
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 PCA9554PWR

Part No.:: PCA9554PWR

Manufacturer:: Texas Instruments

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

Datasheet:: PCA9554PWR.pdf

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

In Stock:: 5821

Quantity:: Add To Cart

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PCA9554PWR Specifications

Package/Case:
16-TSSOP (0.173, 4.40mm Width)
Packaging:
Tape & Reel (TR),Cut Tape (CT),Digi-Reel®
Series:
-
ProductStatus:
Not For New Designs
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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PCA9554PWR information

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PCA9554PWR Typical application Circuitry

PCA9554PWR

The PCA9554PWR is an 8-bit I/O expander with an I2C-bus interface. It expands the I/O capabilities of systems with an I2C-bus, allowing a microcontroller to interface with more devices or peripherals.

PCA9554PWR Application Scenarios:

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

2. Interface with Multiple Devices: Ideal for scenarios that involve interfacing with multiple sensors, LEDs, or other peripherals requiring I/O ports.

PCA9554PWR Key Features and Parameters:

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

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

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

4. Low Standby Current: Energy-efficient design.

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

Circuit Connection Example: Home Automation Lighting System

Overview: Implementing PCA9554PWR in a home automation system for controlling lighting.

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: - The system's ground must be linked to GND (pin 8).

2. I2C Bus Integrity: To achieve the best I2C performance, add pull-up resistors to the SDA and SCL lines.microcontroller's I2C bus.

4. Connecting Lighting Controls to I/O Ports: P0 to P7 (pins 1-7 and pin 9) for connecting to lighting control circuits. Each port interfaces with a control circuit 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 PCA9554PWR.

Design Considerations:

1. Voltage Level Matching: Ensure VCC matches the logic levels of the microcontroller and connected lighting controls.

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

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

4. I/O Port Configuration: Appropriately configure the ports in software, depending on whether the connected devices are inputs or outputs.

5. Device Compatibility: Ensure the connected lighting controls are compatible with the voltage levels and current capabilities of the PCA9554PWR.

In summary, the PCA9554PWR is an efficient I/O expander that significantly enhances the I/O capabilities of microcontroller-based systems, particularly useful in applications like home automation lighting systems. Its 8-bit expansion, I2C-bus compatibility, configurable ports, and energy-efficient design make it a valuable addition to such setups.

PCA9554PWR FAQ

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6. What is the process for return or replacement of PCA9554PWR?

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 PCA9554PWR we delivered, we will accept the replacement or return of the PCA9554PWR 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 PCA9554PWR.

(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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