What is the Additional Feature ?

Name: PCA9555PW
Brand: Texas Instruments
SKU: PCA9555PW
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 PCA9555PW

Part No.:: PCA9555PW

Manufacturer:: Texas Instruments

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

Datasheet:: PCA9555PW.pdf

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

In Stock:: 2554

Quantity:: Add To Cart

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PCA9555PW Specifications

Package/Case:
24-TSSOP (0.173, 4.40mm Width)
Packaging:
Bulk,Tube
Series:
-
ProductStatus:
Obsolete
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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PCA9555PW information

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PCA9555PW Typical application Circuitry

PCA9555PW

The PCA9555PW is a 16-bit I2C-bus and SMBus I/O expander. It is designed to provide additional input/output (I/O) ports to a microcontroller or processor, enabling it to handle a greater number of devices.

PCA9555PW Application Scenarios:

1. Enhancing Microcontroller I/O: Widely used in embedded systems for expanding the I/O capabilities of microcontrollers.

2. Control Systems: Ideal for use in control panels and interface systems in industrial and commercial settings.

PCA9555PW Key Features and Parameters:

1. 16-Bit I/O Expansion: Adds 16 additional I/O ports to a microcontroller system.

2. I2C and SMBus Compatibility: Ensures seamless integration with I2C and SMBus protocols.

3. Independent Input/Output Configuration: Each port can be independently configured as an input or output.

4. Low Power Consumption: Because of its low standby current, it is appropriate for applications that are power-sensitive.

5. Flexible Voltage Operation: Designed to operate across a variety of system voltages.

Circuit Connection Example: Industrial Monitoring System

Overview: Implementing PCA9555PW in an industrial monitoring system for sensor and actuator control.

1. Power Supply Connection:

- VCC (pin 24) should be linked to the system's power supply, adhering to the chip's specified voltage range.

2. I2C Bus Configuration:

- SDA (pin 23) and SCL (pin 22) must be connected to the corresponding SDA and SCL lines on the system's I2C or SMBus.

3. Connecting Sensors and Actuators:

- I/O Ports (P00 to P07 and P10 to P17) for interfacing with sensors and actuators. The configuration of each port should be aligned with the functionality of the connected device.

4. I2C Address Configuration:

- Address Pins (A0, A1, and A2) enable the setting of the PCA9555PW's I2C address, facilitating communication on the bus.

Design Considerations:

1. Voltage Alignment: Ensure that VCC is compatible with both the microcontroller and the connected peripherals.

2. Address Pin Configuration: Accurately configure the address pins to avoid bus conflicts and ensure proper communication.

3. Port Configuration: Program each port according to its role, either as an input for sensors or as an output for actuators.

4. Integration and Testing: Ensure seamless integration with the industrial system and thoroughly test the connectivity and response of each connected device.

In summary, the PCA9555PW is an effective I/O expander that significantly enhances the I/O capabilities of microcontroller systems, particularly useful in applications such as industrial monitoring systems. Its 16-bit I/O expansion, compatibility with I2C and SMBus, independent port configuration, low power consumption, and flexible voltage operation make it a valuable addition to complex control and monitoring systems. Designing circuits with this chip should consider voltage compatibility, I2C addressing, port functionality, and thorough integration with the overall system.

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6. What is the process for return or replacement of PCA9555PW?

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 PCA9555PW we delivered, we will accept the replacement or return of the PCA9555PW 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 PCA9555PW.

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

Two processes to return the products:

(1)Inform us within 90 days

(2)Obtain Requesting Return Authorizations