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PCA9538DB

PCA9538DB

Manufacturer No:

PCA9538DB

Manufacturer:

Texas Instruments

Description:

IC XPNDR 400KHZ I2C SMBUS 16SSOP

Datasheet:

Datasheet

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PCA9538DB Specifications

  • Type
    Parameter
  • Supplier Device Package
    16-SSOP
  • Package / Case
    16-SSOP (0.209", 5.30mm Width)
  • Mounting Type
    Surface Mount
  • Operating Temperature
    -40°C ~ 85°C
  • Voltage - Supply
    2.3V ~ 5.5V
  • Clock Frequency
    400 kHz
  • Current - Output Source/Sink
    10mA, 25mA
  • Output Type
    Push-Pull
  • Features
    POR
  • Interrupt Output
    Yes
  • Interface
    I²C, SMBus
  • Number of I/O
    8
  • DigiKey Programmable
    Not Verified
  • Packaging
    Tube
  • Packaging
    Bulk
  • Product Status
    Last Time Buy
  • Series
    -
The PCA9538DB is an integrated circuit chip that belongs to the PCA953x family of 8-bit I2C-bus and SMBus I/O expanders from Texas Instruments. Here are the advantages and application scenarios of the PCA9538DB:Advantages:1. GPIO Expansion: The PCA9538DB provides 8 I/O pins that can be used as digital inputs or open-drain outputs, allowing for easy expansion of the GPIO (General Purpose Input/Output) capabilities of microcontrollers or other devices.2. I2C Interface: It communicates over the I2C (Inter-Integrated Circuit) bus, which is a popular and widely supported serial communication protocol. This makes it easy to interface the PCA9538DB with a variety of microcontrollers, sensors, and other I2C-compatible devices.3. Interrupt Functionality: The chip supports interrupt capabilities, allowing it to generate an interrupt signal to the host microcontroller when an input changes its state. This enables efficient event-driven programming, as the microcontroller can respond to changes in the I/O pins without the need for continuous polling.4. Low Power Consumption: The PCA9538DB is designed with low power consumption in mind, which makes it suitable for battery-powered or energy-efficient devices. It has low standby and active current consumption, helping to extend the battery life of portable applications.Application Scenarios:1. Industrial Automation: The PCA9538DB can be used in industrial automation systems for expanding the number of digital inputs or outputs available to control various components such as motors, valves, indicators, or sensors. Its I2C compatibility makes it easy to integrate with the existing industrial controller.2. IoT Devices: It finds applications in Internet of Things (IoT) devices where multiple sensors or actuators need to be connected to a microcontroller or gateway with limited GPIO capabilities. The PCA9538DB provides extra I/O pins, enabling efficient connectivity with multiple devices over a single I2C bus.3. Keypad or Button Interfaces: The chip can be used for interfacing a matrix keypad or multiple push-buttons. By configuring the I/O pins as digital inputs, the PCA9538DB can detect button presses and communicate the information to the microcontroller via interrupt signals, simplifying the design of input interfaces.4. LED Control: It can be used for expanding the number of controllable LEDs in applications such as LED signage, lighting control systems, or status indicators. The open-drain outputs can sink current to control the brightness or ON/OFF state of LEDs, enabling efficient LED control with minimal GPIO resources.Overall, the PCA9538DB offers the advantage of expanding GPIO capabilities while being easy to interface with different systems via I2C. Its low power consumption and interrupt functionality make it suitable for various applications, including industrial automation, IoT devices, keypad interfaces, and LED control.
PCA9538DB Relevant information