IO Expanders
  • SX1512B
    • World’s Lowest Voltage Level Shifting GPIO with LED Driver and Keypad Engine
  • SX1511B
    • World’s Lowest Voltage Level Shifting GPIO with LED Driver and Keypad Engine
  • SX1509QB
    • World’s Lowest Voltage Level Shifting GPIO with LED Driver and Keypad Engine
  • SX1508QB
    • 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
  • SX1508B
    • World’s Lowest Voltage Level Shifting GPIO with LED Driver and Keypad Engine
  • SX1506
    • SX1504/SX1505/SX1506 4/8/16 Channel GPIO
  • SX1505
    • SX1504/SX1505/SX1506 4/8/16 Channel GPIO
Semtech SX1509

Semtech SX1509

World's Lowest Voltage Level Shifting GPIO with LED Driver and Keypad Engine

The SX1507, SX1508 and SX1509 are complete ultra low voltage 1.2V to 3.6V General Purpose parallel Input/Output (GPIO) expanders ideal for low power handheld battery powered equipment. This family of GPIOs comes in 4-, 8-, 16-channel configuration and allows easy serial expansion of I/O through a standard 400kHz I2C interface. GPIO devices can provide additional control and monitoring when the microcontroller or chipset has insufficient I/O ports, or in systems where serial communication and control from a remote location is advantageous. Press Release >>

Features


  • 1.2V to 3.6V Low Operating Voltage with Dual Independent I/O Rails (VCC1, VCC2)
    • Enable Direct Level Shifting Between I/O Banks and Host Controller
  • 5.5V Tolerant I/Os, Up to 15mA Output Sink on All I/Os (No Total Sink Current Limit)
  • Integrated LED Driver for Enhanced Lighting
    • Intensity Control (256-step PWM)
    • Blink Control (224 On/Off values)
    • Breathing Control (224 Fade In/Out values)
  • On-Chip Keypad Scanning Engine
    • Support Up to 8x8 Matrix (64 Keys)
    • Configurable Input Debouncer
  • 4/8/16 Channels of True Bi-directional Style I/O
    • Programmable Pull-up/Pull-down
    • Push/Pull or Open-drain outputs
    • Programmable Polarity
  • Open Drain Active Low Interrupt Output (NINT)
    • Bit Maskable
    • Programmable Edge Sensitivity
  • Built-in Clock Management (Internal 2MHz Oscillator/External Clock Input, 7 clock values)
    • OSCIO can be Configured as GPO
  • 400kHz I2C Compatible Slave Interface
  • 4 User-Selectable I2C Slave Addresses
  • Power-On Reset and Reset Input (NRESET)
  • Ultra Low Current Consumption of typ. 1uA
  • -40°C to +85°C Operating Temperature Range
  • 2kV HBM ESD Protection
  • Small Footprint Packages
  • Pb & Halogen Free, RoHS/WEEE compliant

Applications


  • Cell phones, PDAs, MP3 players
  • Digital camera, Notebooks, GPS Units
  • Any battery powered equipment

Packaging

  • QFN-UT-28

Order Codes

  • SX1509EVK: Evaluation Kit
  • SX1509IULTRT: Lead & Halogen Free, RoHS/WEEE compliant Package minimum tape and reel