MAX7311 19-2747 Rev 4 4/05 2-Wire-Interfaced 16-Bit I/O Port Expander with Interrupt and Hot-Insertion Protection General Description Features 2 The MAX7311 2-wire-interfaced expander provides 16-bit 400kbps I C-Compatible Serial Interface parallel input/output (I/O) port expansion for SMBus 2V to 5.5V Operation 2 and I C applications. The MAX7311 consists of input port registers, output port registers, polarity inversion reg- 5V Overvoltage Tolerant I/Os isters, configuration registers, a bus timeout register, and Supports Hot Insertion 2 an I C-compatible serial interface logic compatible with 16 I/O Pins that Default to Inputs on Power-Up SMBus. The system master can invert the MAX7311 input data by writing to the active-high polarity inversion regis- 100k Pullup on Each I/O ter. The system master can enable or disable bus timeout Open-Drain Interrupt Output (INT) by writing to the bus timeout register. Bus Timeout for Lock-Up-Free Operation Any of the 16 I/O ports can be configured as an input or output. A power-on reset (POR) initializes the 16 I/Os Noise Filter on SCL / SDA Inputs as inputs. Three address select pins configure one of 64 Slave ID Addresses Available 64 slave ID addresses. Low Standby Current (2.9A typ) The MAX7311 supports hot insertion. All port pins, the INT output, SDA, SCL and the slave address inputs Polarity Inversion AD02 remain high impedance in power down (V+ = 4mm 4mm, 0.8mm Thin QFN Package 0V) with up to 6V asserted upon them. -40C to +125C Operation The MAX7311 is available in 24-pin SO, SSOP, TSSOP, and thin QFN packages and is specified over the -40C to +125C automotive temperature range. Ordering Information For applications requiring I/Os without pullup resistors, PKG refer to the MAX7312 data sheet. PART TEMP RANGE PIN-PACKAGE CODE Applications MAX7311AWG -40C to +125C 24 Wide SO Servers MAX7311AAG -40C to +125C 24 SSOP RAID Systems 24 Thin QFN MAX7311ATG -40C to +125C T2444-4 (4mm 4mm) Industrial Control MAX7311AUG -40C to +125C 24 TSSOP Medical Equipment PLCs SMBus is a trademark of Intel Corp. Instrumentation and Test Measurement Pc. oa Pin Configurations l- ne TOP VIEW 2 I s. 18 17 16 15 14 13 + INT 1 24 V SCL 19 12 I/O10 AD1 2 23 SDA SDA 20 11 I/O9 AD2 3 22 SCL V+ 21 10 I/O8 I/O0 4 21 AD0 INT MAX7311ATG GND 22 9 MAX7311 I/O1 5 20 I/O15 AD1 23 8 I/O7 I/O2 6 19 I/O14 AD2 I/O6 24 7 7 18 I/O3 I/O13 12 3 45 6 I/O4 8 17 I/O12 I/O5 9 16 I/O11 THIN QFN I/O6 10 15 I/O10 I/O7 11 14 I/O9 GND 12 13 I/O8 TSSOP/SSOP/SO Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com. EVALUATION KIT AVAILABLE I/O0 AD0 I/O1 I/O15 I/O2 I/O14 I/O3 I/O13 I/O4 I/O12 I/O5 I/O112-Wire-Interfaced 16-Bit I/O Port Expander with Interrupt and Hot-Insertion Protection ABSOLUTE MAXIMUM RATINGS + V to GND ................................................................-0.3V to +6V Continuous Power Dissipation (T = +70C) A I/O0I/O15 as Inputs....................................(GND - 0.3V) to +6V 24-Pin Wide SO (derate 11.8mW/C above +70C) ....941mW SCL, SDA, AD0, AD1, AD2, INT...................(GND - 0.3V) to +6V 24-Pin SSOP (derate 8.0mW/C above +70C) ...........640mW + Maximum V Current......................................................+250mA 24-Pin TSSOP (derate 12.2mW/C above +70C) .......975mW 24-Pin Thin QFN (derate 20.8mW/C above +70C) .1668mW Maximum GND Current ...................................................-250mA Operating Temperature Range .........................-40C to +125C DC Input Current on I/O0I/O15.......................................20mA Junction Temperature......................................................+150C DC Output Current on I/O0I/O15 ....................................80mA 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. DC ELECTRICAL CHARACTERISTICS + + (V = 2V to 5.5V, T = -40C to +125C, unless otherwise noted. Typical values are at V = 3.3V, T = +25C.) (Note 1) A A PARAMETER SYMB O L CONDITIONS MINTYPMAXUNITS + Supply Voltage V 2 5.5 V + V = 2V 23 35 All I/Os unloaded, + + Supply Current I V = 3.3V 43 60 A f = 400kHz SCL + V = 5.5V 80 120 + V = 2V 2.3 11 All I/Os unloaded, + Standby Current I V = 3.3V 2.9 12 A STBY f = 0 SCL + V = 5.5V 3.8 15.5 Power-On Reset Voltage V 1.4 1.7 V POR SCL, SDA + 0.3 V Input Voltage Low V V IL + Input Voltage High V 0.7 V V IH Low-Level Output Voltage V I = 6mA 0.4 V OL SINK Leakage Current I -1 +1 A L Input Capacitance 10 pF I/O Input Voltage Low V 0.8 V IL Input Voltage High V 1.8 V IH T = -40C to +85C includes internal A Input Leakage Current 1A + pullup current, V = V IO Internal Pullup Current T = -40C to +85C, V = 0 34 100 A A IO + V = 2V, V = 0.5V 8.5 17 OL + Low-Level Output Current I V = 3.3V, V = 0.5V 17 32 mA SINK OL + V = 5V, V = 0.5V 43 OL + V = 3.3V, V = 2.4V 29 41 OH High Output Current I mA SOURCE + V = 5V, V = 4.5V 31 OH AD0, AD1, AD2 + Input Voltage Low V 0.3 V V IL + Input Voltage High V 0.7 V V IH 2 MAX7311