Contact Mouser (USA)  (800) 346-6873     |     Feedback        
View Cart     |     Change Location  USD
United States United States

Please confirm your currency selection:

US Dollars
Home » NEWEST Products » New by Manufacturer » NXP Semiconductors » NXP I²C General Purpose I/O Expanders
NEWEST Products
NXP I²C  General Purpose I/O Expanders
NXP I²C  General Purpose I/O Expanders

View Product List

Additional Resources

NXP I2C General Purpose I/O Expanders

NXP I²C General Purpose I/O Expanders provide GPIO expansion for most microprocessor families, allowing designers to save the GPIOs on microprocessors for other important functions. Designers can utilize the microprocessor GPIOs for important functions and use the I/O expander for other duties, including system monitoring, ACPI power switches, sensors, push buttons, LEDs, fans, and more. NXP GPIO expanders are ideal for adding fan and LED control to systems. They are also ideal for monitoring system functions and accepting push-button inputs.


Features
  • Provides GPIO expansion for most microprocessor families.
  • Includes INT output used to signal the microcontroller when any of the inputs change state (1 to 0, or 0 to 1)
  • May include RESET input or RESET and OE input
    • RESET used to initialize the device to its default state without de-powering it
    • OE used to "Hi-Z" the outputs without having to use I²C commands

Applications
  • System monitoring
  • ACPI power switches
  • Sensors
  • Push buttons
  • LEDs
  • Fans
Unique Features of "Agile I/O" Versions
  • Backward-compatible with industry-standard versions
  • New registers to control configurable features
  • Input latch locks in any changes on input pins until the input port register is read
  • Programmable pull-up or pull-down resistors
  • Output drive strength selectable to ¼, ½, ¾ or max to conserve battery power and reduce power-supply noise when simultaneous outputs switch
  • Interrupt mask to limit interrupt sources
  • Interrupt status register shows interrupt source
  • Output selection of open-drain or push-pull configuration

GPIO Expander Line-Up
Part Number Datasheet
PCA6408ABSHP
PCA6408AHKX
PCA6408APW,118
PCA6416AEVJ
PCA6416AHF,128
PCA9509PDP,118
PCA9509PGM,125
PCA9522DP,118
PCA9535AHF,128
PCA9535APW,118
PCA9538ABSHP
PCA9538APWJ
PCA9539AHF,128
PCA9539APW,118
PCA9554BBSHP
PCA9554BPWJ
PCA9554BS3,118
PCA9554CBSHP
PCA9554CPWJ
PCA9555AHF,128
PCAL6408ABSHP
PCAL6408AHKX
PCAL6408APWJ
PCAL6416AEVJ
PCAL6416AHF,128
PCAL9535AHF,128
PCAL9535APW,118
PCAL9539AHF,128
PCAL9555AHF,128
  Typical Application
Typical Application
  • NXP Semiconductors
  • Semiconductors|Integrated Circuits|IC-Logic