The MAX7310 is a 2-wire interfaced 8-bit I/O port expander with reset.
The MAX7310 provides eight parallel I/O pins that can be individually configured as inputs or open‑drain outputs. It communicates over a 2‑wire SMBus/I²C‑compatible serial interface, supports up to 56 slave addresses, and includes a programmable bus timeout for lock‑up‑free operation.
The device is offered in 16‑pin thin QFN, TSSOP and QSOP packages and operates over an automotive temperature range of –40 °C to +125 °C. Key electrical characteristics include a supply voltage range of 2.3 V to 5.5 V, a typical standby current of 1.7 pA, and a maximum SCL clock frequency of 400 kHz.
| Supply Voltage (V+) | 2.3 V – 5.5 V |
|---|---|
| Standby Current (typical) | 1.7 pA |
| Maximum Clock Frequency (SCL) | 400 kHz |
| Number of I/O Pins | 8 |
| Package Types | 16‑pin Thin QFN, TSSOP, QSOP |
| Bus Timeout | 30 ms minimum, 60 ms maximum |
The device operates with a supply voltage between 2.3 V and 5.5 V.
The MAX7310 provides eight parallel I/O pins.
The maximum SCL clock frequency is 400 kHz.
Typical standby current is 1.7 pA.