NCA9539BY-Q100HP

NCA9539BY-Q100HP is a low-voltage 16-bit I²C and SMBus low-power I/O expander with interrupt output, reset pin and configuration register. It provides 16bits of General Purpose I/P/O/P (GPIO) expansion with interrupt and reset for I²C-bus/SMBus applications. It is designed for a wide voltage range of 1.65V to 5.5V. Nexperia GPIO expanders provide an elegant solution when additional IO is needed while keeping the interconnections to a minimum, for example, in ACPI power switches, sensor, push buttons, LEDs and fan control. The NCA9539-Q100 contains a set of 8 bit input, output, configuration and polarity inversion registers. At power up all IOs default to inputs. Each IO can be configured as either input or output by changing the corresponding bit in the configuration register. The data for each input or output is stored in the corresponding input or output register. The polarity inversion register can be programmed to invert the polarity of the read register.

• Automotive product qualification in accordance with AEC-Q100 (grade 1)
• I²C-bus to parallel port expander, no glitch on power-up
• Operating power supply voltage range from 1.65V to 5.5V
• Supply current is 4µA max (Tamb = -40°C to +125°C, VCC = 3.6V to 5.5V)
• Schmitt-trigger action allows slow input transition and better switching noise immunity
• Vhys = 0.10 × VCC (typical), noise filter on SCL and SDA inputs, internal power-on reset
• 5V tolerant I/Os, 16 I/O pins which power up configured in input state
• Open-drain active LOW interrupt output (active low INT), 400KHz fast-mode I²C-bus
• Reset input for resetting NCA9539-Q100 to default values (active low RESET)
• 24 lead HWQFN package, ambient temperature range from -40°C to +125°C