SPI Interfaced I/O Expander 16-Pin QSOP

The MAX7317 serial-interfaced peripheral provides microprocessors with 10 I/O ports rated to 7V. Each port can be individually configured as either an opendrain output, or an overvoltage-protected Schmitt input. The MAX7317 supports hot insertion. All port pins remain high impedance in power-down (V+ = 0V) with up to 8V asserted on them. The MAX7317 is available in 16-pin thin QFN and QSOP packages and operates in the -40°C to +125°C range. For a similar part with constant-current outputs and 8-bit PWM controls, refer to the MAX6966/MAX6967 data sheet.

• High-Speed, 26MHz SPI-/QSPI™-/MICROWIRE™-Compatible Serial Interface
• 2.25V to 3.6V Operation
• I/O Port Inputs are Overvoltage Protected to 7V
• I/O Port Outputs are 7V-Rated Open Drain
• I/O Ports Support Hot Insertion
• 0.7µA (typ), 1.9µA (max) Standby Current
• Tiny 3mm x 3mm, 0.8mm High Thin QFN Package
• -40°C to +125°C Temperature Range