PCAL9535AHF,128

PCAL9535AHF,128 is a low-voltage 16bit I²C-bus I/O port with interrupt and agile I/O. It is a low-voltage 16bit general purpose input/output (GPIO) expander with interrupt and reset for I²C-bus/SMBus applications. NXP I/O expander provides a simple solution when additional I/Os are needed while keeping interconnections to a minimum, for example, in ACPI power switches, sensors, push buttons, LEDs, fan control, etc. In addition to providing a flexible set of GPIOs, the wide VDD range of 1.65V to 5.5V allows the interface with next-generation microprocessors and microcontrollers where supply levels are dropping down to conserve power. This mask default allows for a board bring-up free of spurious interrupts at power-up. The open-drain interrupt (active-low INT) output is activated when any input state differs from its corresponding Input Port register state and is used to indicate to the system that an input state has changed.

• I²C-bus to parallel port expander, no glitch on power-up
• Supply voltage range from -0.5 to +6.5V, output voltage range from -0.5 to +6.5V
• Schmitt-trigger action allows slow I/P transition/better switching noise immunity at SCL/SDA I/Ps
• Open-drain active LOW interrupt output (INT, active low)
• Internal power-on reset, power-up with all channels configured as inputs
• Latched outputs with 25mA drive maximum capability for directly driving LEDs
• Latch-up performance exceeds 100mA per JESD78, Class II
• ESD protection exceeds JESD22
• 2000V human body model (A114-A), 1000V charged-device model (C101)
• HWQFN24 package, ambient temperature range from -40°C to +85°C