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Name: PCA9555BSHP
Brand: NXP USA Inc.
SKU: PCA9555BSHP
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. PCA9555BSHP

Part No.:: PCA9555BSHP

Manufacturer:: NXP USA Inc.

Package:: 24-VFQFN Exposed Pad

Datasheet:: PCA9555BSHP.pdf

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

In Stock:: 2514

Quantity:: Add To Cart

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PCA9555BSHP Specifications

Package/Case:
24-VFQFN Exposed Pad
Packaging:
Tape & Reel (TR)
Series:
-
ProductStatus:
Active
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

PCA9555BSHP this integrated circuit is available in factory sealed anti static packs. at icwhale.com. Please read product page below detail information. including PCA9555BSHP 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 PCA9555BSHP 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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PCA9555BSHP information

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PCA9555BSHP Typical application Circuitry

PCA9555BSHP

PCA9555BSHP is a 16-bit I²C-bus and SMBus I/O expander from NXP Semiconductors, designed for extending the number of I/Os available to a microcontroller or microprocessor.

Application Scenarios

A practical application for the PCA9555BSHP is in the development of industrial automation systems, where it can be employed to interface with a variety of sensors and actuators, expanding the control capabilities of the system's primary microcontroller or processor.

Parameter Features

- Voltage Compatibility: Operates over a 2.3V to 5.5V range, compatible with most logic levels used in modern digital systems.

- I²C/SMBus Interface: Supports standard I²C and SMBus protocols, allowing up to 400kHz (Fast-mode) data transfer rates.

- Configurable I/O Ports: Provides 16 configurable I/O ports that can be individually set as inputs or outputs, offering significant system design flexibility.

- Interrupt Feature: Includes an interrupt output that signals the host microcontroller when an input state changes, enhancing system responsiveness.

Detailed Circuit Connection - Industrial Automation System Interface

1. I²C Bus Integration

Fundamentally, connect the SDA (Serial Data Line) and SCL (Serial Clock Line) pins of PCA9555BSHP to the corresponding I²C bus lines on the industrial system's main control unit. This setup facilitates communication between the I/O expander and the system processor.

2. Power Supply Configuration

Imperatively, provide a stable power supply, within the specified 2.3V to 5.5V range, to the VDD pin of PCA9555BSHP, and connect the VSS pin to the system's ground. This ensures the device's reliable operation.

3. Input/Output Port Setup

Strategically, configure the P0 to P7 pins (Port 0) for input operations to connect various sensors, ensuring that the sensor outputs are compatible with the PCA9555BSHP input voltage specifications. Simultaneously, set up P10 to P17 pins (Port 1) as outputs to control actuators or relay modules.

4. Interrupt Handling

Crucially, connect the INT pin of PCA9555BSHP to an interrupt-capable GPIO pin on the main controller. This connection allows the system to react promptly to changes in the input port states without constant polling, significantly improving efficiency.

Circuit Design Considerations

- Power Management: Especially in industrial applications, it's vital to manage the power requirements of PCA9555BSHP and connected devices carefully to ensure stability and longevity.

- I²C Bus Management: Properly address bus capacitance and pull-up resistors on the SDA and SCL lines to maintain signal integrity and reliable communication, particularly in environments with long cable runs or high noise.

- Device Addressing: Given the PCA9555BSHP uses I²C for communication, it's essential to set unique addresses for each expander device to avoid conflicts, especially when multiple expanders are present in the system.

- EMC Considerations: In industrial settings, attention must be paid to electromagnetic compatibility. Implementing filtering, shielding, and proper routing techniques can mitigate the impact of electromagnetic interference on the PCA9555BSHP and the overall system.

By integrating these considerations, engineers can effectively leverage the PCA9555BSHP to enhance the I/O capabilities of microcontroller-based systems in industrial automation, ensuring robust and flexible control over a wide array of sensors and actuators.

PCA9555BSHP FAQ

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6. What is the process for return or replacement of PCA9555BSHP?

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 PCA9555BSHP we delivered, we will accept the replacement or return of the PCA9555BSHP 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 PCA9555BSHP.

(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