IO Expanders
  • SX1502
  • 4/8/16 Channel Low Voltage GPIO
  • SX1503
  • 4/8/16 Channel Low Voltage GPIO
  • SX1504
  • SX1504/SX1505/SX1506 4/8/16 Channel GPIO
  • SX1505
  • SX1504/SX1505/SX1506 4/8/16 Channel GPIO
  • SX1506
  • SX1504/SX1505/SX1506 4/8/16 Channel GPIO
  • SX1508B
  • World’s Lowest Voltage Level Shifting GPIO with LED Driver and Keypad Engine
  • SX1509B
  • World’s Lowest Voltage Level Shifting GPIO with LED Driver and Keypad Engine
Semtech SX1501

Semtech SX1501

4/8/16 Channel Low Voltage GPIO


The SX1501, SX1502 and SX1503 are complete ultra low voltage General Purpose parallel Input/Output (GPIO) expanders ideal for low power handheld battery powered equipment.


  • 4/8/16 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 24mA output sink
    (no total sink current limit)
  • Fully programmable logic functions (PLD)
  • 400kHz 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 typ. 1uA
  • -40°C to +85°C operating temperature range
  • Ultra-Thin 3x3mm QFN-UT-20 and TSSOP-20 packages (SX1501/SX1502)
  • Ultra-Thin 4x4mm QFN-UT-28 and TSSOP-28 packages (SX1503)


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


QFN-UT-20 (3x3mm), TSSOP-20 (3x3mm)

Order Codes

  • SX1501I087TRT: Lead Free, RoHS Compliant, Package minimum tape and reel
- Close -
Add Product to Watch List

Please login to the mySemtech member site to add products to your personal Watch List.

If you're not registered for mySemtech, please Register now. mySemtech member benefits include pre-filled forms for quick and easy online ordering, technical support, new product information and more.