Nexperia NCA9595PW-Q100J

The NCA9595-Q100 provides 16-bit general-purpose I/O (GPIO) expansion for I²C bus/SMBus applications. Designed for a wide voltage range of 1.65 V to 5.5 V, it features interrupt and default pull-up resistors on the GPIOs. When additional I/O is needed while keeping interconnects to a minimum, Nexperia's GPIO expander offers an elegant solution for applications such as ACPI power switching, sensors, buttons, LEDs, and fan control. The NCA9595-Q100 contains a set of 8-bit input, output, configuration, polarity inversion, and configuration pull-up registers. At power-up, all I/Os default to inputs. Each I/O can be configured as an input or output by changing the corresponding bit in the configuration register. 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 input registers. Pull-up resistors can be disconnected by programming the configuration pull-up register. The NCA9595-Q100 features an open-drain interrupt output that is asserted whenever any GPIO changes state from its corresponding input port register value. A power-on reset sets all registers to their default values and initializes the device state machine. The NCA9595-Q100 has three address pins — A0, A1, and A2 — which can be used to configure the device's I²C bus slave address, allowing up to eight devices to share the same I²C bus/SMBus.

This product is qualified to AEC-Q100 Grade 1 for automotive applications.

• AEC-Q100 (Grade 1) automotive qualification
• Operating temperature range: -40°C to +125°C
• I²C bus to parallel port expander
• Operating supply voltage range: 1.65 V to 5.5 V
• Low standby current consumption: 4 μA maximum
• Schmitt-trigger inputs allow slow input transitions and improved switching noise immunity on SCL and SDA
• Typical hysteresis voltage Vhys = 0.10 × VCC
• Noise filter on SCL and SDA inputs
• 5 V tolerant I/O
• 16 I/O pins configured as inputs at power-up with weak configurable pull-up resistors
• Open-drain active-low interrupt output (INT)
• 400 kHz fast-mode I²C bus
• Internal power-on reset
• Configurable pull-up register to disable pull-up resistors on GPIOs
• Glitch-free power-up
• Latched outputs with 25 mA maximum drive capability for direct LED driving
• Latch-up performance exceeds 100 mA per JESD78 Class II
• ESD protection: HBM ANSI/ESDA/JEDEC JS-001 Class 2 exceeds 2000 V; CDM ANSI/ESDA/JEDEC JS-002 Class C3 exceeds 1000 V