DESCRIPTION

· The NCA9539-Q100 is a 16-bit I²C/SMBus GPIO expander with interrupt and reset functionality.

· It operates within a voltage range of 1.65 V to 5.5 V, making it suitable for low-voltage applications.

· The device includes 8-bit input, output, configuration, and polarity inversion registers.

· It features an open-drain interrupt output and a reset pin for device initialization.

· The NCA9539-Q100 is AEC-Q100 (Grade 1) qualified, ensuring reliability in automotive environments.

FEATURES

· Automotive qualification per AEC-Q100 (Grade 1).

· Wide operating temperature range: -40 °C to +125 °C.

· Low standby current consumption: 4 µA (max).

· Schmitt-trigger inputs for noise immunity.

· 5 V tolerant I/O pins.

· 16 I/O pins default to input on power-up.

· Open-drain interrupt output and reset functionality.

· Supports 400 kHz Fast-mode I²C-bus.

· Latched outputs with 25 mA drive capability for direct LED control.

APPLICATIONS

· ACPI power switches.

· Sensor interfaces.

· Push-button controls.

· LED drivers.

· Fan control systems.

· Automotive electronics.