SPI GPIO expander with 8 input-only channels
The NXP PCA9702PW,118 is an SPI-bus GPIO expander providing 8 input-only I/O lines with a push-pull output stage, clocked at up to 5 MHz over the SPI serial interface. A dedicated interrupt output signals the host when any input changes, eliminating continuous polling and reducing bus traffic in interrupt-driven firmware architectures.
Available in Tape & Reel (TR) or Cut Tape (CT) for prototyping or production volumes — the reel quantity is confirmed at RFQ.
For new designs, the active status and wide supply range make this a low-risk BOM line; no pin-compatible second-source is recorded, so the BOM should be qualified against the single source.
