NCA9539BY-Q100

NCA9539BY-Q100 is a low-voltage 16bit I²C and SMBus low-power I/O expander with interrupt output, reset pin and configuration registers. Nexperia GPIO expanders provide an elegant solution when additional IOs are needed while keeping the interconnections to a minimum, for example, in ACPI power switches, sensors, push buttons, LEDs and fan control. The NCA9539-Q100 contains a set of 8bit 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. The NCA9539-Q100 has an open-drain interrupt output which is activated when any one of the GPIO changes from its corresponding input port register state.

• Operating power supply voltage range of 1.65V to 5.5V
• I²C-bus to parallel port expander
• Low standby current consumption of 4µA (maximum)
• 5V tolerant I/Os and 400KHz fast-mode I²C-bus
• Internal power-on reset and no glitch on power-up
• Latched outputs with 25mA drive maximum capability for directly driving LEDs
• Latch-up performance exceeds 100mA per JESD78, Class II
• ESD protection: HBM ANSI/ESDA/JEDEC JS-001 Class 2 exceeds 2000V
• ESD protection: CDM ANSI/ESDA/JEDEC JS-002 Class C3 exceeds 1000V
• Automotive qualification AEC-Q100 (Grade 1) -40 to +125°C temp and 24 pin HWQFN package