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

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.

Key Features Industry-Standard 4-Wire Interface Simplifies I/O Ports Expansion Independent of Microprocessor Architecture High-Speed, 26MHz, SPI-/QSPI™-/MICROWIRE®-Compatible Serial Interface 2.25V to 3.6V Operation Protection Circuitry Ensures Robust 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 Low Power Consumption and Small Package Reduce Board Size and Power-Supply Requirements 0.7µA (typ), 1.9µA (max) Standby Current 3mm x 3mm, 0.8mm High TQFN Package

MAX7317: Block Diagram Applications/Uses Cellular Phones Industrial Controllers Portable Equipment System Monitoring White Goods

DataSheet

Parametrics

Quality and Environmental Data

• MAX7317.pdf

Related Products

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• MAX6957：4-Wire-Interfaced, 2.5V to 5.5V, 20-Port and 28-Port LED Display Driver and I/O Expander

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