MAX7313

400kbs, 2-Wire Serial Interface, 5.5V Tolerant
2V to 3.6V Operation
Overall 8-Bit PWM LED Intensity Control Global 16-Step Intensity Control Individual 16-Step Intensity Controls
Two-Phase LED Blinking
High Output Current (50mA max Per Port)
Outputs are 5.5V-Rated Open Drain
Supports Hot Insertion
Inputs are Overvoltage Protected to 5.5V
Transition Detection with Interrupt Output
1.2A (typ), 3.6A (max) Standby Current
Small 4mm x 4mm Thin QFN Package
-40to +125 Temperature Range
All Ports Can Be Configured as Inputs or Outputs

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Voltage (with respect to GND)
V+...........................................................................-0.3V to +4V
SCL, SDA, AD0, AD1, AD2, P0P15 ........................-0.3V to +6V
INT/O16 .................................................................-0.3V to +8V
DC Current on P0P15, INT/O16 ......................................55mA
DC Current on SDA.............................................................10mA
Maximum GND Current .....................................................350mA
Continuous Power Dissipation (TA = +70
24-Pin QSOP (derate 9.5mW/ over +70)...................761mW
24-Pin QFN (derate 20.8mW/°C over +70) ...............1666mW
Operating Temperature Range (TMIN to TMAX)-40 to +125
Junction Temperature.......................................................+150
Storage Temperature Range ..............................-65 to +150
Lead Temperature (soldering, 10s) ..................................+300

The MAX7313 I2C™-compatible serial interfaced peripheral provides microprocessors with 16 I/O ports. Each I/O port can be individually configured as either an open-drain current-sinking output rated at 50mA and 5.5V, or a logic input with transition detection. A 17th port of MAX7313 can be used for transition detection interrupt, or as a general-purpose output. The outputs are capable of driving LEDs, or providing logic outputs with external resistive pullup up to 5.5V.

PWM current drive MAX7313 is integrated with 8 bits of control. Four bits are global control and apply to all LED outputs to provide coarse adjustment of current from fully off to fully on with 14 intensity steps. Each output then has individual 4-bit control, which further divides the globally set current into 16 more steps. Alternatively, the current control of MAX7313 can be configured as a single 8-bit control that sets all outputs at once.

The MAX7313 is pin and software compatible with the MAX7311, PCA9535, and PCA9555.

Each output of MAX7313 has independent blink timing with two blink phases. All LEDs can be individually set to be on or off during either blink phase, or to ignore the blink control. The blink period is controlled by a register.

The MAX7313 supports hot insertion. All port pins, the INT  output, SDA, SCL, and the slave-address inputs ADO-2 remain high impedance in power-down (V+ =0V) with up to 6V asserted upon them.

The MAX7313 is controlled through the 2-wire I2C/SMBus serial interface, and can be configured to any one of 64 I2C addresses.