NCA9535BYHP

NCA9535BYHP is a low-voltage 16-bit I²C and SMBus low-power I/O expander with interrupt output and configuration register. It provides 16 bits of General Purpose Input/Output (GPIO) expansion for I²C-bus/SMBus applications. It is designed for a wide voltage range of 1.65V to 5.5V with interrupt. Nexperia GPIO expander provides an elegant solution when additional IO is needed while keeping the interconnections to a minimum, for example, in ACPI power switches, sensors, push buttons, LEDs and fan control. The NCA9535 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 input register.

• I²C-bus to parallel port expander
• 2.5µA max low standby current consumption (3.6V to 5.5V, -40°C to +85°C)
• Schmitt-trigger action for slow input transition and better switching noise immunity at SCL/SDA I/Ps
• Vhys = 0.10 × VCC (typical), noise filter on SCL and SDA inputs
• 5V tolerant I/Os, 16 I/O pins which power up configured in input state
• Open-drain active LOW interrupt output (active low INT)
• SCL clock frequency range from 0 to 400KHz (Fast-mode I²C-bus)
• Internal power-on reset, no glitch on power-up, latch-up performance exceeds 100mA per JESD78
• Latched outputs with 25mA drive maximum capability for directly driving LEDs
• 24 pin HWQFN package, operating temperature range from -40°C to +85°C