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NEVB-NCA6416 Low-voltage translating 16-bit I²C-bus / SMBus I/O expander evaluation board

The NEVB-NCA6416 evaluation board is a compact platform for evaluating Nexperia’s 16-bit I²C-bus I/O expander with integrated voltage-level translation, interrupt, and RESET capability. It enables GPIO expansion between mixed-voltage domains using a dual-supply architecture, allowing seamless interfacing between the I²C bus and port pins. The board provides access to all 16 GPIOs, SDA, SCL, INT, and RESET signals, along with jumper-selectable address configuration via a single address pin. Dedicated test points support signal monitoring and debugging, and the board supports Standard-mode and Fast-mode I²C operation.

Key features & benefits

  • I²C-bus to parallel port GPIO expander 
  • Input voltage = 1.65 V to 5.5 V 
  • 16 GPIO pins, individually programmable as input or output 
  • Push-pull and open-drain output options 
  • Current drive capability = ±25 mA (ideal for LEDs)
  • I²C interface, compatible with SMBus standards 
  • Fast-Mode 400 kHz
  • 5.5 V tolerant inputs
  • 1 address pin allowing up to two devices on the I²C-bus
  • Active LOW reset input and open-drain INT output 
  • Supports partial power-down applications
  • Glitch free powerup
  • No specific power up sequence required

Products on the board (2)

Type number Description Status Quick access
NCA6416PW Low-voltage translating 16-bit I²C-bus/SMBus I/O expander Production
NCA6416PW-Q100 Low-voltage translating 16-bit I²C-bus/SMBus I/O expander Production

Products on the board (2)

Type number Description Status Quick access
NCA6416PW Low-voltage translating 16-bit I²C-bus/SMBus I/O expander Production
NCA6416PW-Q100 Low-voltage translating 16-bit I²C-bus/SMBus I/O expander Production

Documentation (2)

File name Title Type Date
NEVB-NCA6416_quick-start Quick start guide NEVB-NCA6416 evaluation board Other type 2026-01-30
UM90077 NEVB-NCA6416 Low-voltage translating 16-bit I²C-bus/SMBus I/O expander evaluation board User manual 2026-01-30

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