General Description

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 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.

Features

♦ 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

♦ 1.2µA (typ), 3.6µA (max) Standby Current

♦ Small 4mm x 4mm TQFN Package

♦ -40°C to +125°C Temperature Range

♦ All Ports Can Be Configured as Inputs or Outputs

Applications

   LCD Backlights

   LED Status Indication

   Portable Equipment

   Keypad Backlights

   RGB LED Drivers

   Notebook Computers