PCA9698 is a 40-bit I2C input/output expander, which can achieve 40-bit GPIO expansion in I2C/SMBus applications
The PCA9698 is a 40‑bit I/O expansion chip designed for PC/SMBus applications. It provides 40 GPIO pins that can be individually configured as push‑pull or open‑drain outputs, with optional interrupt and polarity‑invert features.
The device supports fast‑mode Plus (up to 1 MHz) operation, offers three address pins for up to 64 devices on a single bus, and is available in TSSOP56 and HVQFN56 packages suitable for industrial temperature ranges. This manual is written in Chinese.
| Sink Current per Pin | 10 mA |
|---|---|
| Source Current per Pin | 25 mA |
| Maximum Total Output Current | 1 A |
| Operating Temperature Range | -40 °C ~ +85 °C |
| Package Types | TSSOP56, HVQFN56 |