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Name: PCA9535PWR
Brand: Texas Instruments
SKU: PCA9535PWR
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 PCA9535PWR

Part No.:: PCA9535PWR

Manufacturer:: Texas Instruments

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

Datasheet:: PCA9535PWR.pdf

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

In Stock:: 2123

Quantity:: Add To Cart

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PCA9535PWR Specifications

Package/Case:
24-TSSOP (0.173, 4.40mm Width)
Packaging:
Tape & Reel (TR),Cut Tape (CT),Digi-Reel®,Bulk
Series:
-
ProductStatus:
Not For New Designs
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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PCA9535PWR information

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PCA9535PWR Typical application Circuitry

PCA9535PWR

The PCA9535PWR is a 16-bit I2C-bus and SMBus I/O expander. It is designed to provide additional input/output (I/O) ports for microcontrollers or processors in systems where the number of available GPIO pins is limited. This chip is particularly useful for expanding I/O capabilities using the I2C bus for communication.

PCA9535PWR Application Scenarios:

1. I/O Expansion in Embedded Systems: Frequently employed in embedded systems such as home automation, industrial controls, or IoT devices to interface with additional sensors, LEDs, or other peripherals.

2. Control Functions in Consumer Electronics: Used in consumer electronics like smartphones, tablets, and PCs to manage multiple control functions.

PCA9535PWR Key Features and Parameters:

1. 16-Bit I/O Ports: The PCA9535PWR provides sixteen additional I/O ports, each configurable as input or output.

2. I2C-Bus Interface: Compatible with the I2C-bus and SMBus, facilitating easy integration into most microcontroller-based systems.

3. Low Power Consumption: It is appropriate for battery-powered gadgets because it is energy-efficiently designed.

4. Programmable Polarity Inversion: Includes the feature for programmable polarity inversion on the input ports.

5. Wide Operating Voltage Range: Operates within a voltage range of 2.3V to 5.5V, accommodating various logic levels.

Circuit Connection Example: Expanding GPIOs in an IoT Device

Overview: Implementing PCA9535PWR to expand the GPIO functionality of a microcontroller in an Internet of Things (IoT) device.

1. Connecting to Power Supply: VDD (pin 24) should be connected to the microcontroller's power supply, typically within the 2.3V to 5.5V range.

2. System Grounding: GND (pin 12) needs to be connected to the system's ground.

3. I2C Bus Connectivity: SDA (pin 23) and SCL (pin 22) are to be linked to the I2C data and clock lines of the microcontroller.

4. Configuring I/O Ports: P0.0 to P0.7 (pins 1-7) and P1.0 to P1.7 (pins 13-20) serve as the I/O ports, which can be programmed as inputs or outputs depending on the application needs.

5. I2C Address Configuration: A0, A1, and A2 (pins 21, 20, and 19, respectively) must be set to establish the specific I2C address for the device, connecting them to either VCC or GND.

Design Considerations:

1. Voltage Compatibility: Ensure VDD is compatible with the logic level of the microcontroller.

2. I2C Address Configuration: Appropriately set A0, A1, and A2 to avoid address conflicts on the I2C bus.

3. Pull-Up Resistors for I2C Lines: To ensure steady I2C communication, place appropriate pull-up resistors on the SDA and SCL lines.

4. Input/Output Port Configuration: Properly configure P0.0 to P1.7 as inputs or outputs based on the specific requirements of the IoT device.

5. Power Consumption Awareness: Consider the low power consumption feature, especially in battery-powered applications.

In summary, the PCA9535PWR is an effective and versatile solution for expanding the GPIO capabilities of microcontroller systems, especially beneficial in IoT applications and complex electronics. Its 16-bit I/O expansion, compatibility with I2C-bus standards, and energy-efficient design make it a valuable component in a variety of applications where additional GPIOs are needed.

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(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 PCA9535PWR.

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