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PCA9539DBR

PCA9539DBR

Manufacturer No:

PCA9539DBR

Manufacturer:

Texas Instruments

Description:

IC XPNDR 400KHZ I2C SMBUS 24SSOP

Datasheet:

Datasheet

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PCA9539DBR Specifications

  • Type
    Parameter
  • Supplier Device Package
    24-SSOP
  • Package / Case
    24-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
    16
  • DigiKey Programmable
    Not Verified
  • Packaging
    Cut Tape (CT)
  • Packaging
    Tape & Reel (TR)
  • Product Status
    Last Time Buy
  • Series
    -
The PCA9539DBR is an integrated circuit chip that belongs to the PCA9539 family of devices. It is an 8-bit I2C-bus and SMBus I/O expander with interrupt and reset features. Here are some advantages and application scenarios of the PCA9539DBR chip:Advantages: 1. Expandability: The PCA9539DBR chip allows for expanding the number of I/O pins available on a microcontroller or other devices. It provides an additional 8 I/O pins, which can be configured as inputs or outputs. 2. I2C Interface: The chip communicates over the I2C bus, which is a widely used serial communication protocol. This makes it compatible with a wide range of microcontrollers and other devices that support I2C. 3. Interrupt Functionality: The PCA9539DBR chip supports interrupt functionality, allowing it to generate an interrupt signal to the microcontroller when a specific event occurs. This can be useful in scenarios where real-time response is required. 4. Reset Feature: The chip includes a reset function that allows all the I/O pins to be set to a default state. This can be helpful during initialization or error recovery.Application Scenarios: 1. GPIO Expansion: The PCA9539DBR chip is commonly used to expand the number of general-purpose input/output (GPIO) pins available on a microcontroller. This is particularly useful in applications where the microcontroller has limited I/O pins, but more I/O functionality is required. 2. LED Control: The chip can be used to control multiple LEDs in various applications. By configuring the I/O pins as outputs, the PCA9539DBR can drive LEDs with different states, brightness levels, or patterns. 3. Keypad or Button Interface: In scenarios where a large number of buttons or a keypad needs to be connected to a microcontroller, the PCA9539DBR chip can be used to expand the available I/O pins. Each button or keypad switch can be connected to an individual I/O pin, allowing for easy interfacing. 4. Sensor Interface: The chip can also be used to interface with various sensors that require digital inputs or outputs. By configuring the I/O pins appropriately, the PCA9539DBR can communicate with sensors and read their data or control their operation.Overall, the PCA9539DBR chip offers expandability, flexibility, and ease of use in various applications that require additional I/O pins or digital interfaces.
PCA9539DBR Relevant information