MAX7317 10-Port SPI-Interfaced I/O Expander with Overvoltage and Hot-Insertion Protection General Description Benefits and Features The MAX7317 serial-interfaced peripheral provides Industry-Standard 4-Wire Interface Simplifies I/O microprocessors with 10 I/O ports rated to 7V. Each port Ports Expansion Independent of Microprocessor can be individually configured as either an open-drain Architecture output, or an overvoltage-protected Schmitt input. High-Speed, 26MHz, SPI-/QSPI-/MICROWIRE - Compatible Serial Interface The MAX7317 supports hot insertion. All port pins remain 2.25V to 3.6V Operation high impedance in power-down (V+ = 0V) with up to 8V asserted on them. Protection Circuitry Ensures Robust Operation I/O Port Inputs Are Overvoltage Protected to 7V The MAX7317 is available in 16-pin TQFN and QSOP I/O Port Outputs Are 7V-Rated Open Drain packages and operates in the -40C to +125C range. I/O Ports Support Hot Insertion For a similar part with constant-current outputs and Low Power Consumption and Small Package Reduce 8-bit PWM controls, refer to the MAX6966/MAX6967 data Board Size and Power-Supply Requirements sheet. 0.7A (typ), 1.9A (max) Standby Current 3mm x 3mm, 0.8mm High TQFN Package Applications Portable Equipment Cellular Phones Ordering Information White Goods PIN- TOP PART TEMP RANGE Industrial Controllers PACKAGE MARK System Monitoring 16 TQFN-EP* MAX7317ATE+ -40 C to +125 C 3mm x 3mm x ACH 0.8mm QSPI is a trademark of Motorola, Inc. MICROWIRE is a registered trademark of National MAX7317AEE+ -40 C to +125 C 16 QSOP Semiconductor Corp. +Denotes a lead(Pb)-free/RoHS-compliant package. *EP = Exposed pad. Typical Application Circuit +3.3V Pin Configurations C MAX7317 TOP VIEW SCLK SCLK MOSI DIN 12 11 10 9 P0 DOUT MISO P1 DIN 13 8 P6 P2 CS CS V+ 14 7 P5 P3 MAX7317ATE P4 SCLK 15 6 GND I/O PORTS P5 CS 16 5 P4 P6 + P7 1 2 3 4 P8 P9 GND TQFN Pin Configurations continued at end of data sheet. 19-3380 Rev 4 4/15 P0 DOUT P1 P9 P2 P8 P3 P7MAX7317 10-Port SPI-Interfaced I/O Expander with Overvoltage and Hot-Insertion Protection Absolute Maximum Ratings Voltage (with respect to GND) Continuous Power Dissipation (T = +70C) A V+ ............................................................................-0.3V to +4V 16-Pin TQFN (derate 14.7mW/C above +70C) ......1176mW SCLK, DIN, CS, DOUT................................-0.3V to (V+ + 0.3V) 16-Pin QSOP (derate 8.3mW/C above +70C)..........667mW P ...........................................................................-0.3V to +8V Operating Temperature Range DC Current into P ............................................................24mA (T to T ) ............................................. -40C to +125C MIN MAX DC Current into DOUT .......................................................10mA Junction Temperature ......................................................+150C Total GND Current ............................................................200mA Storage Temperature Range ............................ -65C to +150C Lead Temperature (soldering, 10s) .................................+300C Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Electrical Characteristics (Typical Operating Circuit, V+ = 2.25V to 3.6V, T = T to T , unless otherwise noted. Typical values are at V+ = 3.3V, T = +25C.) A MIN MAX A (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Operating Supply Voltage V+ 2.25 3.60 V Output Load External Supply V 7 V EXT Voltage P0P9 T = +25C 0.70 1.5 A Standby Current All digital inputs at V+ I T = T to +85C 1.7 A STBY A MIN (Interface Idle) or GND T = T to T 1.9 A MIN MAX T = +25C 385 620 f = 26MHz other A SCLK Supply Current I digital inputs at V+ or T = T to +85C 680 A + A MIN GND DOUT unloaded T = T to T 730 A MIN MAX Input High Voltage V P0P9 output register set to 0x01 0.7 x V+ V IH (P0P9, DIN, SCLK, CS) Input Low Voltage V P0P9 output register set to 0x01 0.3 x V+ V IL (P0P9, DIN, SCLK, CS) Input Leakage Current I , I -0.2 +0.2 A IH IL (P0P9, DIN, SCLK, CS) Input Capacitance (Note 2) 10 pF (P0P9, DIN, SCLK, CS Output Low Voltage (P0P9) V I = 0.5mA, output register set to 0x00 0.4 V OLP SINK Output Low Short-Circuit Current V = 5V 10.8 20 mA OLPOUT (P0P9) Output High Voltage (DOUT) V I = -6mA V+ - 0.3V V OHDOUT SOURCE Output Low Voltage (DOUT) V I = 6mA 0.3 V OLDOUT SINK Power-On Reset Voltage V 2 V POR Maxim Integrated 2 www.maximintegrated.com