The MAX7326 is a I2C multi-channel expander from MAXIM semiconductor, with 16 I/O ports, 12 of which are push-pull outputs and 4 of which are selectable internal pull-up inputs
The MAX7326 is a 2‑wire I2C‑serial port expander that provides 12 push‑pull output pins (20 mA sink) and four CMOS input pins protected to +6 V. It supports up to 400 kHz I2C clock rates and offers programmable address selection for up to 16 slave addresses.
The device operates from a 1.71 V to 5.5 V supply, draws only 0.6 µA in standby, and is rated for an automotive temperature range of –40 °C to +125 °C. The datasheet includes absolute maximum ratings, detailed electrical characteristics, timing diagrams, pin descriptions, family comparison tables, and package dimensions.
| I2C Serial Interface Speed | 400 kHz |
|---|---|
| Push‑Pull Output Current | 20 mA sink |
| Input Overvoltage Protection | +6 V |
The MAX7326 provides 12 push‑pull output pins, each rated for a 20 mA sink current.
The device supports an I2C serial interface up to 400 kHz.
All four input ports are protected against voltages up to +6 V.