IO Expanders
  • SX1501
  • 4/8/16 Channel Low Voltage GPIO
  • 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
Semtech SX1509B

Semtech SX1509B

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

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The SX1508B and SX1509B are complete ultra low voltage 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.

Features


  • 1.2V to 5.5V (SX1507B) 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: 1uA Typ
  • -40°C to +85°C Operating Temperature Range
  • Up to 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-20
  • QFN-UT-28

Order Codes

  • SX1508BIULTRT
  • SX1509BIULTRT
  • SX1509BEVK:  Evaluation Kit
 
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