2 MAX7328/MAX7329 I C Port Expanders with Eight I/O Ports General Description Features 2 100kHz, 5.5V-Tolerant, I C-Compatible Serial The MAX7328/MAX7329 are 2-wire serial-interfaced Interface peripherals with eight I/O ports. Any port can be used as 2.5V to 5.5V Operating Supply Voltage Range a logic input or an open-drain output. Low-Standby-Current Consumption of 10A (max) All input ports are continuously monitored for state chang- 2 es (transition detection). Transitions are alerted through I C Bus-to-Parallel-Port Expander the open-drain, 5.5V-tolerant INT output. Open-Drain Interrupt Output INT 2 The MAX7328 and MAX7329 versions differ only by their 8-Bit Remote I/O Port for the I C Bus slave ID address ranges. The MAX7328 has a slave ID Latched Outputs with High-Current-Drive Capability range of 0100xxx (0x20 to 0x27). The MAX7329 has a for Directly Driving LEDs slave ID range of 0111xxx (0x38 to 0x3F). Address by Three Hardware Address Pins for Use of Up to Eight Devices (Up to 16 Using Both MAX7328/ For a similar part with overvoltage-protected I/Os and a MAX7329) 2 bus RST input that clears the I C serial interface, refer to Second Sources to PCF8574 and PCF8574A the MAX7321 data sheet. The MAX7328/MAX7329 are members of a family of pin-compatible port expanders with a choice of input ports, open-drain I/O ports, and Ordering Information push-pull output ports (see the Selector Guide). PART TEMP RANGE PIN-PACKAGE Applications RAID MAX7328AWE -40C to +125C 16 Wide SO Servers MAX7328AAP -40C to +125C 20 SSOP Notebooks MAX7328AUP* -40C to +125C 20 TSSOP Industrial MAX7329AWE -40C to +125C 16 Wide SO MAX7329AAP -40C to +125C 20 SSOP Typical Application Circuit MAX7329AUP* -40C to +125C 20 TSSOP *Future productcontact factory for availability. +2.5V TO +5.5V Devices are available in both leaded and lead-free packaging. Specify lead free by adding the + symbol at the end of the part 47nF number when ordering. Pin Configurations V+ C TOP VIEW + SCL AD0 1 16 V+ SCL MAX7328 SDA AD1 2 15 SDA SDA MAX7329 P0 I/O AD2 3 SCL 14 INT INT MAX7328 P1 I/O MAX7329 P0 4 INT 13 P2 I/O P1 5 12 P7 P3 I/O AD0 P4 I/O P2 6 11 P6 AD1 P5 I/O AD2 10 P3 7 P5 P6 I/O 9 GND 8 P4 P7 I/O GND WIDE SO Pin Configurations continued at end of data sheet. 19-3829 Rev 1 4/142 MAX7328/MAX7329 I C Port Expanders with Eight I/O Ports Absolute Maximum Ratings (Voltage with respect to GND.) Continuous Power Dissipation (T = +70C) A V+, SCL, SDA, AD0, AD1, AD2, INT ........................-0.3V to +6V 16-Pin Wide SO (derate 9.5mW/C over +70C).........762mW P0P7 ...........................................................-0.3V to (V+ + 0.3V) 20-Pin SSOP (derate 8mW/C over +70C).................640mW P0P7, SDA, INT Output Sink Current ................................25mA 20-Pin TSSOP (derate 11mW/C over +70C).............879mW SCL, SDA, AD0, AD1, AD2, INT, P0P7 Input Current .......20mA Operating Temperature Range .........................-40C to +125C Total V+ Current................................................................100mA Junction Temperature......................................................+150C Total GND Current ............................................................100mA 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+ = 2.5V to 5.5V, T = T to T , unless otherwise noted. Typical values are at V+ = 5V, T = +25C.) A MIN MAX A (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Operating Supply Voltage V+ 2.5 5.5 V Supply Current (Interface f = 100kHz, other digital inputs at V+ or SCL I+ 40 100 A Running) GND SCL, SDA, and other digital inputs at V+ or Standby Current (Interface Idle) I+ 1 10 A GND Power-On Reset Voltage V 1.3 2.4 V POR Input Low Voltage 0.3 x V V IL SDA, SCL, AD0, AD1, AD2, P0P7 V+ Input High Voltage 0.7 x V V IH SDA, SCL, AD0, AD1, AD2, P0P7 V+ Maximum Allowed Input Current I 400 A PPROT through Protection Diode P0P7 Output Low Current SDA I V = 0.4V 3 mA OLSDA SDA Input Leakage Current I , I Pin at V+ or GND -0.25 +0.25 A IH IL SDA, SCL, AD0, AD1, AD2, P0P7 Input Capacitance C Pin at GND (Note 2) 7 pF I2C SDA, SCL, AD0, AD1, AD2 Port Output-Low Output Current I V = 1V, V+ = 5V 10 25 mA OL OL P0P7 Ports Output-High Output Current I V = GND 30 300 A OH OH P0P7 Output-High Transient Pullup Sources during acknowledge, V = GND, OH I 1 mA OHt Current P0P7 V+ = 2.5V Input Capacitance P0P7 C (Note 2) 10 pF P Interrupt Output-Low Current INT I V = 0.4V 1.6 mA OLINT OLINT Maxim Integrated 2 www.maximintegrated.com