NXP I/O expanders provide a simple solution when additional I/Os are needed while keeping interconnections to a minimum, and are commonly used in power switches, sensors, push-buttons, LEDs and fan-control applications.
Advanced I/O features in the PCAL9535A include programmable output-drive strength, latchable inputs, programmable pull-up/pull-down resistors, maskable interrupt, interrupt status register, and programmable open-drain or push-pull outputs.
- 25mA sink capability for directly driving LEDs
- Power-on reset
- Up to eight devices can share the same bus