PCAL9539A Overview
The PCAL9539A is a low-voltage 16-bit General Purpose Input/Output (GPIO) expander with interrupt and reset for I2C-bus/SMBus applications. NXP I/O expanders provide 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...
PCAL9539A Key Features
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- I2C-bus to parallel port expander
- Operating power supply voltage range of 1.65 V to 5.5 V
- Low standby current consumption
- 1.5 A (typical at 5 V VDD)
- 1.0 A (typical at 3.3 V VDD)
- Schmitt-trigger action allows slow input t