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I/O Expander 8 I²C, SMBus 400 kHz 16-QSOP

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MAX7315AEE+T General Description

The MAX7315 I²C-/SMBus™-compatible serial interfaced peripheral provides microprocessors with 8 I/O ports. Each I/O port can be individually configured as either an open-drain current-sinking output rated at 50mA at 5.5V, or a logic input with transition detection. A ninth port can be used for transition detection interrupt or as a general-purpose output. The outputs are capable of directly driving LEDs, or providing logic outputs with external resistive pullup up to 5.5V.

Maxim Integrated Inventory

Key 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
    • Plus Individual 16-Step Intensity Control
  • Automatic Two-Phase LED Blinking
  • 50mA Maximum Port Output Current
  • Outputs Are 5.5V-Rated Open Drain
  • Inputs Are Overvoltage Protected to 5.5V
  • Transition Detection with Interrupt Output
  • Low Standby Current (1.2µA typ; 3.3µA max)
  • Tiny 3mm x 3mm, Thin QFN Package
  • -40°C to +125°C Temperature Range
  • All Ports Can Be Configured as Inputs or Outputs


  • Cell Phones
  • Keypad Backlights
  • Laptop Computers
  • LCD Backlights
  • LED Status Indication
  • Portable Equipment
  • RGB LED Drivers


model MAX7315AEE+T package 16-QSOP-150_MIL
packingQty Reel,2500 packingOption Reel
packageType E16+4 rohs roHSY
lifeCycle production tempRange -40 to 125C
Manufacturer Analog Devices Inc. Product Category Interface - I/O Expanders
RoHS Details Series MAX7315
Mounting Style SMD/SMT Package / Case QSOP-16
Interface Type I2C, Serial, SMBus Number of I/Os 8 I/O
Interrupt Output With Interrupt Supply Voltage - Min 2 V
Supply Voltage - Max 3.6 V Maximum Clock Frequency 400 kHz
Minimum Operating Temperature - 40 C Maximum Operating Temperature + 125 C
ESD Protection Without ESD Protection Brand Analog Devices / Maxim Integrated
Input Voltage 1.08 V to 1.4 V Logic Family MAX7315
Operating Supply Current 3.3 uA Operating Supply Voltage 2 V to 3.6 V
Output Current 50 mA Output Type Open Drain
Output Voltage 150 mV Pd - Power Dissipation 1.176 W
Product Type I/O Expanders Factory Pack Quantity 2500
Subcategory Interface ICs
MAX7315: Typical Application Circuit

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AVAQ determines and packages all devices based on electrostatic discharge (ESD) and moisture sensitivity level (MSL) protection requirements.

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We promise to provide 365 days quality assurance service for all our products.

If you have any dissatisfaction with the quality of the product you received, you can contact us for a refund or exchange, as long as the product is kept in its original condition.


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