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Name: PCA9555BS,118
Brand: NXP USA Inc.
SKU: PCA9555BS,118
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. PCA9555BS,118

Part No.:: PCA9555BS,118

Manufacturer:: NXP USA Inc.

Package:: 24-VFQFN Exposed Pad

Datasheet:: PCA9555BS,118.pdf

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

In Stock:: 2775

Quantity:: Add To Cart

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PCA9555BS,118 Specifications

Package/Case:
24-VFQFN Exposed Pad
Packaging:
Tape & Reel (TR),Cut Tape (CT),Digi-Reel®,Bulk
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

PCA9555BS,118 this integrated circuit is available in factory sealed anti static packs. at icwhale.com. Please read product page below detail information. including PCA9555BS,118 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 PCA9555BS,118 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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PCA9555BS,118 information

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PCA9555BS,118 Typical application Circuitry

PCA9555BS,118

PCA9555BS,118 is a 16-bit I²C-bus and SMBus-compatible I/O expander from NXP Semiconductors, which is designed to provide additional digital I/O ports.

Application Scenarios

One notable application of the PCA9555BS,118 is in server rack management systems, where it can be used to monitor and control various sensors and indicators, such as temperature sensors, fan controllers, and LED status indicators, within a server rack.

Parameter Features

- Voltage Range: The device operates over a wide voltage range from 2.3V to 5.5V, making it versatile for various digital systems.

- Interface: It features an I²C-bus interface, supporting not just standard I²C speeds but also the faster SMBus speeds, which is crucial for quick data transfer in complex systems.

- Configurable Ports: The PCA9555BS,118 provides 16 I/O ports that can be individually configured as input or output, offering great flexibility in interfacing with a wide array of peripherals.

- Interrupt Functionality: It includes an interrupt output pin that can be activated by any change in the input ports, allowing efficient notification to the main processor without the need for continuous polling.

Detailed Circuit Connection - Server Rack Management System

1. I²C Communication Lines

First and foremost, connect the SDA (Serial Data) and SCL (Serial Clock) lines of PCA9555BS,118 to the corresponding I²C bus lines on the server's main control board. This establishes the primary communication pathway for sending commands and receiving data from the I/O expander.

2. Power Supply and Grounding

Equally critical, ensure that the VDD pin of PCA9555BS,118 is connected to a stable power supply within the 2.3V to 5.5V range, and the VSS pin is connected to the system ground to ensure proper device operation.

3. Output Configuration for Indicators

Strategically, configure the P0 to P7 pins as outputs to control LED indicators, representing various system statuses like power, temperature warning, or network activity. Each pin directly drives an LED with a current-limiting resistor in series.

4. Input Configuration for Sensors

Importantly, set up the P10 to P17 pins as inputs to connect to temperature sensors or other monitoring devices within the server rack. This enables the PCA9555BS,118 to read signals indicating overheating or other potential issues.

Circuit Design Considerations

- Address Configuration: One must ensure the address pins (A0, A1, A2) of PCA9555BS,118 are set correctly to avoid address conflicts on the I²C bus, especially when multiple I/O expanders are used within the same system.

- Noise Immunity: Given the potentially noisy environment within a server rack, implementing filtering and pull-up resistors on the I²C lines can enhance signal integrity and communication reliability.

- Power Decoupling: It's advisable to place a decoupling capacitor close to the VDD pin of PCA9555BS,118 to stabilize the power supply and suppress possible voltage spikes.

- Thermal Management: While PCA9555BS,118 typically operates within a low power envelope, attention should be paid to thermal management in densely packed server environments, ensuring that the device operates within its specified temperature range.

By integrating these considerations, the PCA9555BS,118 can be effectively utilized to augment the I/O capabilities of server management systems, facilitating enhanced monitoring and control functionalities within compact and complex server environments.

PCA9555BS,118 FAQ

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3. Are the PCA9555BS,118 price and inventory displayed accurate?

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6. What is the process for return or replacement of PCA9555BS,118?

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 PCA9555BS,118 we delivered, we will accept the replacement or return of the PCA9555BS,118 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 PCA9555BS,118.

(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