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Product Variant Information section
Product Specification Section
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3,000+ $0.705


Attributes Table
Interface Circuit Type I2C
Clock Frequency-Max 400kHz
No of I/O Lines 16
Supply Voltage-Nom 1.2V to 5.5V
Supply Current 1µA
Output Type Push Pull
Output Current 24mA
Operating Temp Range -40°C to +85°C
Storage Temperature Range -55°C to +150°C
Features and Applications

The SX1503I091TRT is a complete ultra low voltage general purpose parallel input/output (GPIO) expander ideal for low power handheld battery powered equipment.

It allows a easy serial expansion of I/O through a standard I2C interface. This device can also acts as a level shifter to connect a microcontroller running at one voltage level to a component running at a different voltage level.


  • 16 channel of I/Os
    • True bi-directional style I/O
    • Programmable Pull-up/Pull-down
    • Push/Pull outputs
  • 1.2V to 5.5V independent operating voltage for all supply rails (VDDM, VCC1, VCC2)
  • 5.5V compatible I/Os, up to 24 mA output sink (no total sink current limit)
  • Fully programmable logic functions (PLD)
  • 400 kHz 2-wire I2C compatible slave interface
  • Open drain active low interrupt output (NINT)
    • Bit maskable
    • Programmable edge sensitivity
  • Power-On Reset and reset input (NRESET)
  • Ultra low current consumption of typical 1 µA
  • -40°C to +85°C operating temperature range
  • Ultra-Thin 4x4mm QFN-UT-28 package (SX1503)


  • Cell phones, PDAs, MP3 players
  • Digital camera
  • Portable multimedia player
  • Notebooks
  • GPS Units
  • Industrial, ATE
  • Any battery powered equipment