NCA9595PWJ

NCA9595PWJ is a low-voltage 16-bit I²C and SMBus I/O expander with interrupt output, configuration registers and programmable pull-up resistors. It is designed for a wide voltage range of 1.65V to 5.5V with interrupt and default pull-up resistors on GPIOs. This GPIO expander provides 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. It contains a set of bit input, output, configuration, polarity inversion and configuration pull-up 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, supply current is 2.5µA maximum at (VCC = 3.6V to 5.5V)
• 16 I/O pins which power up configured in input state with weak configurable pull-up resistors
• 5V tolerant I/Os, open-drain active LOW interrupt output (active-low INT)
• 400KHz fast-mode I²C-bus, internal power-on reset, no glitch on power-up
• Configuration pull-up registers to disable pull up resistors on GPIOs
• Latched outputs with 25mA drive maximum capability for directly driving LEDs
• Latch-up performance exceeds 100mA per JESD78, class II
• CMOS logic switching levels, input capacitance is 1.5pF typical
• Operating temperature range from -40°C to +85°C
• Package style is TSSOP24