MAX7317 10-Port SPI-Interfaced I/O Expander with Overvoltage and Hot-Insertion Protection

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Status Active: In Production. Description 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.

Data Sheet Download Rev 2 (PDF, 296kB) E-Mail

Key Features 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   Applications/Uses Automotive Cell Phones Industrial Controllers Portable Equipment System Monitoring White Goods

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MAX7317

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Document Ref.: 19-3380 Rev 2; 2005-04-26
This page last modified: 2005-07-06