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Name: PCA9534APWR
Brand: Texas Instruments
SKU: PCA9534APWR
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 PCA9534APWR

Part No.:: PCA9534APWR

Manufacturer:: Texas Instruments

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

Datasheet:: PCA9534APWR.pdf

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

In Stock:: 2540

Quantity:: Add To Cart

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PCA9534APWR Specifications

Package/Case:
16-TSSOP (0.173, 4.40mm Width)
Packaging:
Tape & Reel (TR),Cut Tape (CT),Digi-Reel®
Series:
-
ProductStatus:
Active
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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PCA9534APWR information

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PCA9534APWR Typical application Circuitry

PCA9534APWR

PCA9534APWR is an 8-bit I²C and SMBus I/O expander from Texas Instruments, designed to provide additional digital I/O ports to a microcontroller or microprocessor system.

Application Scenarios

A typical application for PCA9534APWR is in smart home automation systems, where it can be used to expand the I/O capabilities of a central control unit, allowing for the integration of various sensors, switches, and indicators.

Parameter Features

- Voltage Compatibility: Operates on a supply voltage from 2.3V to 5.5V, making it adaptable to various logic levels and systems.

- Interface: Features an I²C-bus interface, supporting both 100kHz standard-mode and 400kHz fast-mode I²C communications.

- Configurable I/Os: Offers 8 configurable I/O ports that can be independently set as inputs or outputs.

- Interrupt Output: Includes an interrupt output pin, which can be configured to signal the host microcontroller upon a change in input status, reducing the need for constant polling.

Detailed Circuit Connection - Smart Home Automation System

1. I²C Communication Setup

Initiate by connecting the SDA and SCL pins of PCA9534APWR to the corresponding I²C bus lines (SDA and SCL) of the smart home's central control unit. This forms the communication pathway for sending commands and receiving status updates.

2. Power Supply and Grounding

Ensure that the VDD pin of PCA9534APWR is connected to a suitable power source within the 2.3V to 5.5V range, and connect the VSS pin to the system ground to provide stable operation of the device.

3. Output Configuration for Actuators

Configure the P0 to P3 pins as outputs to control actuators like relays or LED indicators, representing various system states such as "system armed" or "light on".

4. Input Configuration for Sensors

Set up the P4 to P7 pins as inputs to connect environmental sensors, such as door switches or motion detectors, enabling the PCA9534APWR to monitor changes in the home environment.

Circuit Design Considerations

- I²C Addressing: Carefully manage the PCA9534APWR's hardware addressing, using the A0, A1, and A2 address pins, to prevent conflicts on the I²C bus, especially important in systems with multiple I²C devices.

- Signal Integrity: Maintain signal integrity on the I²C bus by implementing appropriate pull-up resistors on the SDA and SCL lines, particularly crucial in environments with long cable runs or high electromagnetic interference (EMI).

- Power Decoupling: Place a decoupling capacitor close to the PCA9534APWR's power supply pin to minimize voltage spikes and noise, ensuring reliable operation.

- Interrupt Management: Effectively utilize the INT pin to manage input change interrupts, designing the system to respond promptly to these signals to implement real-time monitoring and control.

By incorporating these considerations, the PCA9534APWR can be effectively used in smart home automation systems to expand the control unit's I/O capabilities, enabling more sophisticated control and monitoring functionalities within the system.

PCA9534APWR FAQ

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6. What is the process for return or replacement of PCA9534APWR?

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 PCA9534APWR we delivered, we will accept the replacement or return of the PCA9534APWR 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 PCA9534APWR.

(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