MAX7313
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MAX7313

16-Port I/O Expander with LED Intensity Control, Interrupt, and Hot-Insertion Protection

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8- and 16-Port I/O Expanders with IRQ and Low Standby Current Ideal for Portable Applications

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Info: : PRODUCTION tooltip
Part Details
Part Models 4
1ku List Price Starting From $3.22
Features
  • 400kbps, 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
Additional Details
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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.

PWM current drive 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 can be configured as a single 8-bit control that sets all outputs at once.

Each output 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 active-low INT output, SDA, SCL, and the slave-address inputs AD0-2 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.

Applications

  • Keypad Backlights
  • LCD Backlights
  • LED Status Indication
  • Notebook Computers
  • Portable Equipment
  • RGB LED Drivers
Part Models 4
1ku List Price Starting From $3.22

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
MAX7313AEG+
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MAX7313AEG+T
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MAX7313ATG+
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Product Lifecycle

PCN

Jun 20, 2016

- 1612

ASSEMBLY

MAX7313ATG+

PRODUCTION

MAX7313ATG+T

PRODUCTION

Filter by Model

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Part Models

Product Lifecycle

PCN

Jun 20, 2016

- 1612

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ASSEMBLY

MAX7313ATG+

PRODUCTION

MAX7313ATG+T

PRODUCTION

Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

MAX7313EVKIT

Evaluation Kit for the MAX7313

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MAX7313EVKIT

Evaluation Kit for the MAX7313

Evaluation Kit for the MAX7313

Features and Benefits

  • Evaluates Four RGB and Four White LEDs
  • Independent Output Control of Each LED
  • Relay Driving Capable
  • PC Interface or User-Supplied I²C Interface
  • Windows 2000/XP/Vista (32-Bit)-Compatible Software
  • USB Powered
  • Surface-Mount Components
  • Fully Assembled and Tested

Product Detail

The MAX7313 evaluation kit (EV kit) is a fully assembled and tested surface-mount, 16-output LED driver circuit board. The circuit uses the MAX7313 IC, a 16-port GPIO with LED intensity control, interrupt, and hot-insertion protection. The EV kit includes four RGB LEDs and four white LEDs (WLEDs) that can be controlled simultaneously by the MAX7313. The EV kit demonstrates the MAX7313 IC's 8-bit PWM LED intensity control, 2-phase LED blinking, interrupt output, four-level I²C addressing feature.

The MAX7313 EV kit provides printed-circuit board (PCB) pads for the MAX7313 I²C serial-interface signals. A Windows 2000/XP/Vista®-compatible software is provided to access the MAX7313 IC. The MAX7313 EV kit can also be directly interfaced to a user-provided I²C system.

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